Our students have been involved in new and exciting interdisciplinary research and have published in leading high impact journals including Nature Chemistry, Nature Communications, JACS, Angewandte Chemie, Applied Physics Letters, ACS Nano, Nano Letters, Advanced Materials, Nature Protocols, PloS one, and many others.
A full list of the work published by our NanoDTC Students, Associates and others, acknowledging the NanoDTC grants EP/G037221, EP/L015978 and EP/S022953/1 is below. If you want to view the papers on google scholar, see here.
Some papers published by our students are also featured below with some additional contextual information.
Last updated: Mar 2021
Looking inside lithium-ion batteries
Spectroscopy and Electrocatalysis for a Sustainable Future
From waste to fuel: quantifying sustainability
Novel spin states discovered in silicon-based artificial atoms
A step forward in efficient artificial photosynthesis
Self-assembling hydrogels on microfluidic droplets that respond to light or chemical stimuli by disassembling
2023
Zheng, Jiapeng; Boukouvala, Christina; Lewis, George R.; Ma, Yicong; Chen, Yang; Ringe, Emilie; Shao, Lei; Huang, Zhifeng; Wang, Jianfang
Halide-assisted differential growth of chiral nanoparticles with threefold rotational symmetry Journal Article
In: NATURE COMMUNICATIONS, vol. 14, no. 1, 2023.
@article{WOS:001018100800003,
title = {Halide-assisted differential growth of chiral nanoparticles with
threefold rotational symmetry},
author = {Jiapeng Zheng and Christina Boukouvala and George R. Lewis and Yicong Ma and Yang Chen and Emilie Ringe and Lei Shao and Zhifeng Huang and Jianfang Wang},
doi = {10.1038/s41467-023-39456-8},
year = {2023},
date = {2023-06-01},
journal = {NATURE COMMUNICATIONS},
volume = {14},
number = {1},
publisher = {NATURE PORTFOLIO},
address = {HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY},
abstract = {Enriching the library of chiral plasmonic nanoparticles that can be
chemically mass-produced will greatly facilitate the applications of
chiral plasmonics in areas ranging from constructing optical
metamaterials to sensing chiral molecules and activating immune cells.
Here we report on a halide-assisted differential growth strategy that
can direct the anisotropic growth of chiral Au nanoparticles with
tunable sizes and diverse morphologies. Anisotropic Au nanodisks are
employed as seeds to yield triskelion-shaped chiral nanoparticles with
threefold rotational symmetry and high dissymmetry factors. The averaged
scattering g-factors of the l- and d-nanotriskelions are as large as
0.57 and - 0.49 at 650 nm, respectively. The Au nanotriskelions have
been applied in chiral optical switching devices and chiral
nanoemitters. We also demonstrate that the manipulation of the
directional growth rate enables the generation of a variety of chiral
morphologies in the presence of homochiral ligands.
Expanding the library of chiral plasmonic nanoparticles will foster the
development of chiroptical applications. Here, the authors apply
halide-assisted differential growth to convert Au nanodisks into
triskelion-shaped chiral nanoparticles with threefold rotational
symmetry.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
chemically mass-produced will greatly facilitate the applications of
chiral plasmonics in areas ranging from constructing optical
metamaterials to sensing chiral molecules and activating immune cells.
Here we report on a halide-assisted differential growth strategy that
can direct the anisotropic growth of chiral Au nanoparticles with
tunable sizes and diverse morphologies. Anisotropic Au nanodisks are
employed as seeds to yield triskelion-shaped chiral nanoparticles with
threefold rotational symmetry and high dissymmetry factors. The averaged
scattering g-factors of the l- and d-nanotriskelions are as large as
0.57 and - 0.49 at 650 nm, respectively. The Au nanotriskelions have
been applied in chiral optical switching devices and chiral
nanoemitters. We also demonstrate that the manipulation of the
directional growth rate enables the generation of a variety of chiral
morphologies in the presence of homochiral ligands.
Expanding the library of chiral plasmonic nanoparticles will foster the
development of chiroptical applications. Here, the authors apply
halide-assisted differential growth to convert Au nanodisks into
triskelion-shaped chiral nanoparticles with threefold rotational
symmetry.
Rocchetti, Sara; Ohmann, Alexander; Chikkaraddy, Rohit; Kang, Gyeongwon; Keyser, Ulrich F.; Baumberg, Jeremy J.
Amplified Plasmonic Forces from DNA Origami-Scaffolded Single Dyes in Nanogaps Journal Article
In: NANO LETTERS, vol. 23, no. 13, pp. 5959-5966, 2023, ISSN: 1530-6984.
@article{WOS:001018203600001,
title = {Amplified Plasmonic Forces from DNA Origami-Scaffolded Single Dyes in
Nanogaps},
author = {Sara Rocchetti and Alexander Ohmann and Rohit Chikkaraddy and Gyeongwon Kang and Ulrich F. Keyser and Jeremy J. Baumberg},
doi = {10.1021/acs.nanolett.3c01016},
issn = {1530-6984},
year = {2023},
date = {2023-06-01},
journal = {NANO LETTERS},
volume = {23},
number = {13},
pages = {5959-5966},
publisher = {AMER CHEMICAL SOC},
address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
abstract = {Developing highlyenhanced plasmonic nanocavities allowsdirectobservation
of light-matter interactions at the nanoscale.With DNA origami, the
ability to precisely nanoposition single-quantumemitters in ultranarrow
plasmonic gaps enables detailed study of theirmodified light emission.
By developing protocols for creating nanoparticle-on-mirrorconstructs in
which DNA nanostructures act as reliable and customizablespacers for
nanoparticle binding, we reveal that the simple pictureof
Purcell-enhanced molecular dye emission is misleading. Instead,we show
that the enhanced dipolar dye polarizability greatly amplifiesoptical
forces acting on the facet Au atoms, leading to their
rapiddestabilization. Using different dyes, we find that emission
spectraare dominated by inelastic (Raman) scattering from molecules and
metals,instead of fluorescence, with molecular bleaching also not
evidentdespite the large structural rearrangements. This implies that
thecompetition between recombination pathways demands a rethink of
routesto quantum optics using plasmonics.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
of light-matter interactions at the nanoscale.With DNA origami, the
ability to precisely nanoposition single-quantumemitters in ultranarrow
plasmonic gaps enables detailed study of theirmodified light emission.
By developing protocols for creating nanoparticle-on-mirrorconstructs in
which DNA nanostructures act as reliable and customizablespacers for
nanoparticle binding, we reveal that the simple pictureof
Purcell-enhanced molecular dye emission is misleading. Instead,we show
that the enhanced dipolar dye polarizability greatly amplifiesoptical
forces acting on the facet Au atoms, leading to their
rapiddestabilization. Using different dyes, we find that emission
spectraare dominated by inelastic (Raman) scattering from molecules and
metals,instead of fluorescence, with molecular bleaching also not
evidentdespite the large structural rearrangements. This implies that
thecompetition between recombination pathways demands a rethink of
routesto quantum optics using plasmonics.
Lawson, Takashi; Gentleman, Alexander S.; Lage, Ava; Casadevall, Carla; Xiao, Jie; Petit, Tristan; Frosz, Michael H.; Reisner, Erwin; Euser, Tijmen G.
Low-Volume Reaction Monitoring of Carbon Dot Light Absorbers in Optofluidic Microreactors Journal Article
In: ACS CATALYSIS, vol. 13, no. 13, pp. 9090-9101, 2023, ISSN: 2155-5435.
@article{WOS:001018321200001,
title = {Low-Volume Reaction Monitoring of Carbon Dot Light Absorbers in
Optofluidic Microreactors},
author = {Takashi Lawson and Alexander S. Gentleman and Ava Lage and Carla Casadevall and Jie Xiao and Tristan Petit and Michael H. Frosz and Erwin Reisner and Tijmen G. Euser},
doi = {10.1021/acscatal.3c02212},
issn = {2155-5435},
year = {2023},
date = {2023-06-01},
journal = {ACS CATALYSIS},
volume = {13},
number = {13},
pages = {9090-9101},
publisher = {AMER CHEMICAL SOC},
address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
abstract = {Optical monitoring and screening of photocatalytic batchreactionsusing
cuvettes ex situ is time-consuming, requiressubstantial amounts of
samples, and does not allow the analysis ofspecies with low extinction
coefficients. Hollow-core photonic crystalfibers (HC-PCFs) provide an
innovative approach for in situ reaction detection using
ultraviolet-visible absorption spectroscopy,with the potential for
high-throughput automation using extremelylow sample volumes with high
sensitivity for monitoring of the analyte.HC-PCFs use interference
effects to guide light at the center of amicrofluidic channel and use
this to enhance detection sensitivity.They open the possibility of
comprehensively studying photocatalyststo extract structure-activity
relationships, which is unfeasiblewith similar reaction volume, time,
and sensitivity in cuvettes. Here,we demonstrate the use of HC-PCF
microreactors for the screening ofthe electron transfer properties of
carbon dots (CDs), a nanometer-sizedmaterial that is emerging as a
homogeneous light absorber in photocatalysis.The CD-driven
photoreduction reaction of viologens (XV2+) to the corresponding radical
monocation XV & BULL;+ ismonitored in situ as a model reaction, using a
samplevolume of 1 & mu;L per measurement and with a detectability of <1
& mu;M. A range of different reaction conditions have been
systematicallystudied, including different types of CDs (i.e.,amorphous,
graphitic, and graphitic nitrogen-doped CDs), surface
chemistry,viologens, and electron donors. Furthermore, the excitation
irradiancewas varied to study its effect on the photoreduction rate. The
findingsare correlated with the electron transfer properties of CDs
basedon their electronic structure characterized by soft X-ray
absorptionspectroscopy. Optofluidic microreactors with real-time optical
detectionprovide unique insight into the reaction dynamics of
photocatalyticsystems and could form the basis of future automated
catalyst screeningplatforms, where samples are only available on small
scales or ata high cost.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
cuvettes ex situ is time-consuming, requiressubstantial amounts of
samples, and does not allow the analysis ofspecies with low extinction
coefficients. Hollow-core photonic crystalfibers (HC-PCFs) provide an
innovative approach for in situ reaction detection using
ultraviolet-visible absorption spectroscopy,with the potential for
high-throughput automation using extremelylow sample volumes with high
sensitivity for monitoring of the analyte.HC-PCFs use interference
effects to guide light at the center of amicrofluidic channel and use
this to enhance detection sensitivity.They open the possibility of
comprehensively studying photocatalyststo extract structure-activity
relationships, which is unfeasiblewith similar reaction volume, time,
and sensitivity in cuvettes. Here,we demonstrate the use of HC-PCF
microreactors for the screening ofthe electron transfer properties of
carbon dots (CDs), a nanometer-sizedmaterial that is emerging as a
homogeneous light absorber in photocatalysis.The CD-driven
photoreduction reaction of viologens (XV2+) to the corresponding radical
monocation XV & BULL;+ ismonitored in situ as a model reaction, using a
samplevolume of 1 & mu;L per measurement and with a detectability of <1
& mu;M. A range of different reaction conditions have been
systematicallystudied, including different types of CDs (i.e.,amorphous,
graphitic, and graphitic nitrogen-doped CDs), surface
chemistry,viologens, and electron donors. Furthermore, the excitation
irradiancewas varied to study its effect on the photoreduction rate. The
findingsare correlated with the electron transfer properties of CDs
basedon their electronic structure characterized by soft X-ray
absorptionspectroscopy. Optofluidic microreactors with real-time optical
detectionprovide unique insight into the reaction dynamics of
photocatalyticsystems and could form the basis of future automated
catalyst screeningplatforms, where samples are only available on small
scales or ata high cost.
Lomonosov, Vladimir; Hopper, Elizabeth R.; Ringe, Emilie
Seed-mediated synthesis of monodisperse plasmonic magnesium nanoparticles Journal Article
In: CHEMICAL COMMUNICATIONS, vol. 59, no. 37, pp. 5603-5606, 2023, ISSN: 1359-7345.
@article{WOS:000972804100001,
title = {Seed-mediated synthesis of monodisperse plasmonic magnesium
nanoparticles},
author = {Vladimir Lomonosov and Elizabeth R. Hopper and Emilie Ringe},
doi = {10.1039/d3cc00958k},
issn = {1359-7345},
year = {2023},
date = {2023-05-01},
journal = {CHEMICAL COMMUNICATIONS},
volume = {59},
number = {37},
pages = {5603-5606},
publisher = {ROYAL SOC CHEMISTRY},
address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND},
abstract = {We reduce di-n-butylmagnesium with arene (naphthalene, biphenyl,
phenanthrene) radical anions and dianions to obtain metallic, plasmonic
Mg nanoparticles. Their size and shape depends on the dianion
concentration and reduction potential. Based on these results, we
demonstrate a seeded growth Mg nanoparticle synthesis and report
homogeneous shapes with controllable monodisperse size distributions.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
phenanthrene) radical anions and dianions to obtain metallic, plasmonic
Mg nanoparticles. Their size and shape depends on the dianion
concentration and reduction potential. Based on these results, we
demonstrate a seeded growth Mg nanoparticle synthesis and report
homogeneous shapes with controllable monodisperse size distributions.
Bali, Karan; McCoy, Reece; Lu, Zixuan; Treiber, Jeremy; Savva, Achilleas; Kaminski, Clemens F.; Salmond, George; Salleo, Alberto; Mela, Ioanna; Monson, Rita; Owens, Roisin M.
Multiparametric Sensing of Outer Membrane Vesicle-Derived Supported Lipid Bilayers Demonstrates the Specificity of Bacteriophage Interactions Journal Article
In: ACS BIOMATERIALS SCIENCE & ENGINEERING, vol. 9, no. 6, pp. 3632-3642, 2023, ISSN: 2373-9878.
@article{WOS:000985897700001,
title = {Multiparametric Sensing of Outer Membrane Vesicle-Derived Supported
Lipid Bilayers Demonstrates the Specificity of Bacteriophage
Interactions},
author = {Karan Bali and Reece McCoy and Zixuan Lu and Jeremy Treiber and Achilleas Savva and Clemens F. Kaminski and George Salmond and Alberto Salleo and Ioanna Mela and Rita Monson and Roisin M. Owens},
doi = {10.1021/acsbiomaterials.3c00021},
issn = {2373-9878},
year = {2023},
date = {2023-05-01},
journal = {ACS BIOMATERIALS SCIENCE & ENGINEERING},
volume = {9},
number = {6},
pages = {3632-3642},
publisher = {AMER CHEMICAL SOC},
address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
abstract = {The use of bacteriophages, viruses that specifically infect bacteria, as
antibiotics has become an area of great interest in recent years as the
effectiveness of conventional antibiotics recedes. The detection of
phage interactions with specific bacteria in a rapid and quantitative
way is key for identifying phages of interest for novel antimicrobials.
Outer membrane vesicles (OMVs) derived from Gram -negative bacteria can
be used to make supported lipid bilayers (SLBs) and therefore in vitro
membrane models that contain naturally occurring components of the
bacterial outer membrane. In this study, we employed Escherichia coli
OMV derived SLBs and use both fluorescent imaging and mechanical sensing
techniques to show their interactions with T4 phage. We also integrate
these bilayers with microelectrode arrays (MEAs) functionalized with the
conducting polymer PEDOT:PSS and show that the pore forming interactions
of the phages with the SLBs can be monitored using electrical impedance
spectroscopy. To highlight our ability to detect specific phage
interactions, we also generate SLBs using OMVs derived from Citrobacter
rodentium, which is resistant to T4 phage infection, and identify their
lack of interaction with the phage. The work presented here shows how
interactions occurring between the phages and these complex SLB systems
can be monitored using a range of experimental techniques. We believe
this approach can be used to identify phages that work against bacterial
strains of interest, as well as more generally to monitor any pore
forming structure (such as defensins) interacting with bacterial outer
membranes, and thus aid in the development of next generation
antimicrobials.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
antibiotics has become an area of great interest in recent years as the
effectiveness of conventional antibiotics recedes. The detection of
phage interactions with specific bacteria in a rapid and quantitative
way is key for identifying phages of interest for novel antimicrobials.
Outer membrane vesicles (OMVs) derived from Gram -negative bacteria can
be used to make supported lipid bilayers (SLBs) and therefore in vitro
membrane models that contain naturally occurring components of the
bacterial outer membrane. In this study, we employed Escherichia coli
OMV derived SLBs and use both fluorescent imaging and mechanical sensing
techniques to show their interactions with T4 phage. We also integrate
these bilayers with microelectrode arrays (MEAs) functionalized with the
conducting polymer PEDOT:PSS and show that the pore forming interactions
of the phages with the SLBs can be monitored using electrical impedance
spectroscopy. To highlight our ability to detect specific phage
interactions, we also generate SLBs using OMVs derived from Citrobacter
rodentium, which is resistant to T4 phage infection, and identify their
lack of interaction with the phage. The work presented here shows how
interactions occurring between the phages and these complex SLB systems
can be monitored using a range of experimental techniques. We believe
this approach can be used to identify phages that work against bacterial
strains of interest, as well as more generally to monitor any pore
forming structure (such as defensins) interacting with bacterial outer
membranes, and thus aid in the development of next generation
antimicrobials.
Rubio-Sanchez, Roger; Mognetti, Bortolo Matteo; Cicuta, Pietro; Michele, Lorenzo Di
DNA-Origami Line-Actants Control Domain Organization and Fission in Synthetic Membranes Journal Article
In: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 145, no. 20, pp. 11265-11275, 2023, ISSN: 0002-7863.
@article{WOS:001011381000001,
title = {DNA-Origami Line-Actants Control Domain Organization and Fission in
Synthetic Membranes},
author = {Roger Rubio-Sanchez and Bortolo Matteo Mognetti and Pietro Cicuta and Lorenzo Di Michele},
doi = {10.1021/jacs.3c01493},
issn = {0002-7863},
year = {2023},
date = {2023-05-01},
journal = {JOURNAL OF THE AMERICAN CHEMICAL SOCIETY},
volume = {145},
number = {20},
pages = {11265-11275},
publisher = {AMER CHEMICAL SOC},
address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
abstract = {Cells can preciselyprogram the shape and lateral organizationof their
membranes using protein machinery. Aiming to replicate acomparable
degree of control, here we introduce DNA-origami line-actants(DOLAs) as
synthetic analogues of membrane-sculpting proteins. DOLAsare designed to
selectively accumulate at the line-interface betweencoexisting domains
in phase-separated lipid membranes, modulatingthe tendency of the
domains to coalesce. With experiments and coarse-grainedsimulations, we
demonstrate that DOLAs can reversibly stabilize two-dimensionalanalogues
of Pickering emulsions on synthetic giant liposomes, enablingdynamic
programming of membrane lateral organization. The controlafforded over
membrane structure by DOLAs extends to three-dimensionalmorphology, as
exemplified by a proof-of-concept synthetic pathwayleading to vesicle
fission. With DOLAs we lay the foundations formimicking, in synthetic
systems, some of the critical membrane-hostedfunctionalities of
biological cells, including signaling, trafficking,sensing, and
division.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
membranes using protein machinery. Aiming to replicate acomparable
degree of control, here we introduce DNA-origami line-actants(DOLAs) as
synthetic analogues of membrane-sculpting proteins. DOLAsare designed to
selectively accumulate at the line-interface betweencoexisting domains
in phase-separated lipid membranes, modulatingthe tendency of the
domains to coalesce. With experiments and coarse-grainedsimulations, we
demonstrate that DOLAs can reversibly stabilize two-dimensionalanalogues
of Pickering emulsions on synthetic giant liposomes, enablingdynamic
programming of membrane lateral organization. The controlafforded over
membrane structure by DOLAs extends to three-dimensionalmorphology, as
exemplified by a proof-of-concept synthetic pathwayleading to vesicle
fission. With DOLAs we lay the foundations formimicking, in synthetic
systems, some of the critical membrane-hostedfunctionalities of
biological cells, including signaling, trafficking,sensing, and
division.
Sandoval, Miguel A. Cascales; Hierro-Rodriguez, A.; Sanz-Hernandez, D.; Skoric, L.; Christensen, C. N.; Donnelly, C.; Fernandez-Pacheco, A.
Fourier-space generalized magneto-optical ellipsometry Journal Article
In: PHYSICAL REVIEW B, vol. 107, no. 17, 2023, ISSN: 2469-9950.
@article{WOS:000996107300004,
title = {Fourier-space generalized magneto-optical ellipsometry},
author = {Miguel A. Cascales Sandoval and A. Hierro-Rodriguez and D. Sanz-Hernandez and L. Skoric and C. N. Christensen and C. Donnelly and A. Fernandez-Pacheco},
doi = {10.1103/PhysRevB.107.174420},
issn = {2469-9950},
year = {2023},
date = {2023-05-01},
journal = {PHYSICAL REVIEW B},
volume = {107},
number = {17},
publisher = {AMER PHYSICAL SOC},
address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA},
abstract = {The magneto-optical Kerr effect (MOKE) is widely exploited in
laboratory-based setups for the study of thin films and nanostructures,
providing magnetic characterization with good spatial and temporal
resolutions. Due to the complex coupling of light with a magnetic
sample, conventional MOKE magnetometers normally work by selecting a
small range of incident wave-vector values, focusing the incident light
beam to a small spot, and recording the reflected intensity at that
angular range by means of photodetectors. Using this approach,
additional methodologies and measurements are required for full
vectorial magnetic characterization. Here, we computationally
investigate a Fourier-space MOKE setup, where a focused beam
ellipsometer using high numerical aperture optics and a camera detector
is employed to simultaneously map the intensity distribution for a wide
range of incident and reflected wave vectors. We employ circularly
incident polarized light and no analyzing optics, in combination with a
fitting procedure of the light intensity maps to the analytical
expression of the Kerr effect under linear approximation. In this way,
we are able to retrieve the three unknown components of the
magnetization vector as well as the material' s optical and
magneto-optical constants with high accuracy and short acquisition
times, with the possibility of single-shot measurements. Fourier MOKE is
thus proposed as a powerful method to perform generalized
magneto-optical ellipsometry for a wide range of magnetic materials and
devices.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
laboratory-based setups for the study of thin films and nanostructures,
providing magnetic characterization with good spatial and temporal
resolutions. Due to the complex coupling of light with a magnetic
sample, conventional MOKE magnetometers normally work by selecting a
small range of incident wave-vector values, focusing the incident light
beam to a small spot, and recording the reflected intensity at that
angular range by means of photodetectors. Using this approach,
additional methodologies and measurements are required for full
vectorial magnetic characterization. Here, we computationally
investigate a Fourier-space MOKE setup, where a focused beam
ellipsometer using high numerical aperture optics and a camera detector
is employed to simultaneously map the intensity distribution for a wide
range of incident and reflected wave vectors. We employ circularly
incident polarized light and no analyzing optics, in combination with a
fitting procedure of the light intensity maps to the analytical
expression of the Kerr effect under linear approximation. In this way,
we are able to retrieve the three unknown components of the
magnetization vector as well as the material' s optical and
magneto-optical constants with high accuracy and short acquisition
times, with the possibility of single-shot measurements. Fourier MOKE is
thus proposed as a powerful method to perform generalized
magneto-optical ellipsometry for a wide range of magnetic materials and
devices.
Lomonosov, Vladimir; Wayman, Thomas M. R.; Hopper, Elizabeth R.; Ivanov, Yurii P.; Divitini, Giorgio; Ringe, Emilie
Plasmonic magnesium nanoparticles decorated with palladium catalyze thermal and light-driven hydrogenation of acetylene Journal Article
In: NANOSCALE, vol. 15, no. 16, pp. 7420-7429, 2023, ISSN: 2040-3364.
@article{WOS:000962363300001,
title = {Plasmonic magnesium nanoparticles decorated with palladium catalyze
thermal and light-driven hydrogenation of acetylene},
author = {Vladimir Lomonosov and Thomas M. R. Wayman and Elizabeth R. Hopper and Yurii P. Ivanov and Giorgio Divitini and Emilie Ringe},
doi = {10.1039/d3nr00745f},
issn = {2040-3364},
year = {2023},
date = {2023-04-01},
journal = {NANOSCALE},
volume = {15},
number = {16},
pages = {7420-7429},
publisher = {ROYAL SOC CHEMISTRY},
address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND},
abstract = {Bimetallic Pd-Mg nanoparticles were synthesized by partial galvanic
replacement of plasmonic Mg nanoparticles, and their catalytic and
photocatalytic properties in selective hydrogenation of acetylene have
been investigated. Electron probe studies confirm that the Mg-Pd
structures mainly consist of metallic Mg and sustain several localized
plasmon resonances across a broad wavelength range. We demonstrate that,
even without light excitation, the Pd-Mg nanostructures exhibit an
excellent catalytic activity with selectivity to ethylene of 55% at
100% acetylene conversion achieved at 60 degrees C. With laser
excitation at room temperature over a range of intensities and
wavelengths, the initial reaction rate increased up to 40 times with
respect to dark conditions and a 2-fold decrease of the apparent
activation energy was observed. A significant wavelength-dependent
change in hydrogenation kinetics strongly supports a catalytic behavior
affected by plasmon excitation. This report of coupling between Mg's
plasmonic and Pd's catalytic properties paves the way for sustainable
catalytic structures for challenging, industrially relevant selective
hydrogenation processes.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
replacement of plasmonic Mg nanoparticles, and their catalytic and
photocatalytic properties in selective hydrogenation of acetylene have
been investigated. Electron probe studies confirm that the Mg-Pd
structures mainly consist of metallic Mg and sustain several localized
plasmon resonances across a broad wavelength range. We demonstrate that,
even without light excitation, the Pd-Mg nanostructures exhibit an
excellent catalytic activity with selectivity to ethylene of 55% at
100% acetylene conversion achieved at 60 degrees C. With laser
excitation at room temperature over a range of intensities and
wavelengths, the initial reaction rate increased up to 40 times with
respect to dark conditions and a 2-fold decrease of the apparent
activation energy was observed. A significant wavelength-dependent
change in hydrogenation kinetics strongly supports a catalytic behavior
affected by plasmon excitation. This report of coupling between Mg's
plasmonic and Pd's catalytic properties paves the way for sustainable
catalytic structures for challenging, industrially relevant selective
hydrogenation processes.
Jagt, Robert A.; Bravic, Ivona; Eyre, Lissa; Galkowski, Krzysztof; Borowiec, Joanna; Dudipala, Kavya Reddy; Baranowski, Michal; Dyksik, Mateusz; de Goor, Tim W. J. Van; Kreouzis, Theo; Xiao, Ming; Bevan, Adrian; Plochocka, Paulina; Stranks, Samuel D.; Deschler, Felix; Monserrat, Bartomeu; MacManus-Driscoll, Judith L.; Hoye, Robert L. Z.
Layered BiOI single crystals capable of detecting low dose rates of X-rays Journal Article
In: NATURE COMMUNICATIONS, vol. 14, no. 1, 2023.
@article{WOS:000983415900014,
title = {Layered BiOI single crystals capable of detecting low dose rates of
X-rays},
author = {Robert A. Jagt and Ivona Bravic and Lissa Eyre and Krzysztof Galkowski and Joanna Borowiec and Kavya Reddy Dudipala and Michal Baranowski and Mateusz Dyksik and Tim W. J. Van de Goor and Theo Kreouzis and Ming Xiao and Adrian Bevan and Paulina Plochocka and Samuel D. Stranks and Felix Deschler and Bartomeu Monserrat and Judith L. MacManus-Driscoll and Robert L. Z. Hoye},
doi = {10.1038/s41467-023-38008-4},
year = {2023},
date = {2023-04-01},
journal = {NATURE COMMUNICATIONS},
volume = {14},
number = {1},
publisher = {NATURE PORTFOLIO},
address = {HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY},
abstract = {The complex coupling between charge-carriers and phonons in bismuth
oxyiodide (BiOI) are uncovered, showing how carrier localisation is
avoided and long transport lengths achieved. As a result, BiOI is
revealed to be highly effective for X-ray detection.
Detecting low dose rates of X-rays is critical for making safer
radiology instruments, but is limited by the absorber materials
available. Here, we develop bismuth oxyiodide (BiOI) single crystals
into effective X-ray detectors. BiOI features complex lattice dynamics,
owing to the ionic character of the lattice and weak van der Waals
interactions between layers. Through use of ultrafast spectroscopy,
first-principles computations and detailed optical and structural
characterisation, we show that photoexcited charge-carriers in BiOI
couple to intralayer breathing phonon modes, forming large polarons,
thus enabling longer drift lengths for the photoexcited carriers than
would be expected if self-trapping occurred. This, combined with the low
and stable dark currents and high linear X-ray attenuation coefficients,
leads to strong detector performance. High sensitivities reaching 1.1 x
10(3) mu C Gy(air)(-1) cm(-2) are achieved, and the lowest dose rate
directly measured by the detectors was 22 nGy(air) s(-1). The
photophysical principles discussed herein offer new design avenues for
novel materials with heavy elements and low-dimensional electronic
structures for (opto)electronic applications.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
oxyiodide (BiOI) are uncovered, showing how carrier localisation is
avoided and long transport lengths achieved. As a result, BiOI is
revealed to be highly effective for X-ray detection.
Detecting low dose rates of X-rays is critical for making safer
radiology instruments, but is limited by the absorber materials
available. Here, we develop bismuth oxyiodide (BiOI) single crystals
into effective X-ray detectors. BiOI features complex lattice dynamics,
owing to the ionic character of the lattice and weak van der Waals
interactions between layers. Through use of ultrafast spectroscopy,
first-principles computations and detailed optical and structural
characterisation, we show that photoexcited charge-carriers in BiOI
couple to intralayer breathing phonon modes, forming large polarons,
thus enabling longer drift lengths for the photoexcited carriers than
would be expected if self-trapping occurred. This, combined with the low
and stable dark currents and high linear X-ray attenuation coefficients,
leads to strong detector performance. High sensitivities reaching 1.1 x
10(3) mu C Gy(air)(-1) cm(-2) are achieved, and the lowest dose rate
directly measured by the detectors was 22 nGy(air) s(-1). The
photophysical principles discussed herein offer new design avenues for
novel materials with heavy elements and low-dimensional electronic
structures for (opto)electronic applications.
Chen, Kaikai; Choudhary, Adnan; Sandler, Sarah E.; Maffeo, Christopher; Ducati, Caterina; Aksimentiev, Aleksei; Keyser, Ulrich F.
Super-Resolution Detection of DNA Nanostructures Using a Nanopore Journal Article
In: ADVANCED MATERIALS, vol. 35, no. 12, 2023, ISSN: 0935-9648.
@article{WOS:000929497100001,
title = {Super-Resolution Detection of DNA Nanostructures Using a Nanopore},
author = {Kaikai Chen and Adnan Choudhary and Sarah E. Sandler and Christopher Maffeo and Caterina Ducati and Aleksei Aksimentiev and Ulrich F. Keyser},
doi = {10.1002/adma.202207434},
issn = {0935-9648},
year = {2023},
date = {2023-03-01},
journal = {ADVANCED MATERIALS},
volume = {35},
number = {12},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Elabbadi, Mohsen; Boukouvala, Christina; Hopper, Elizabeth R.; Asselin, Jeremie; Ringe, Emilie
Synthesis of Controllable Cu Shells on Au Nanoparticles with Electrodeposition: A Systematic in Situ Single Particle Study Journal Article
In: JOURNAL OF PHYSICAL CHEMISTRY C, vol. 127, no. 10, pp. 5044-5053, 2023, ISSN: 1932-7447.
@article{WOS:000942874800001,
title = {Synthesis of Controllable Cu Shells on Au Nanoparticles with
Electrodeposition: A Systematic\textit{ in}\textit{ Situ} Single Particle
Study},
author = {Mohsen Elabbadi and Christina Boukouvala and Elizabeth R. Hopper and Jeremie Asselin and Emilie Ringe},
doi = {10.1021/acs.jpcc.2c08910},
issn = {1932-7447},
year = {2023},
date = {2023-03-01},
journal = {JOURNAL OF PHYSICAL CHEMISTRY C},
volume = {127},
number = {10},
pages = {5044-5053},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Bali, Karan; Guffick, Charlotte; McCoy, Reece; Lu, Zixuan; Kaminski, Clemens F.; Mela, Ioanna; Owens, Roisin M.; Veen, Hendrik W.
Biosensor for Multimodal Characterization of an Essential ABC Transporter for Next-Generation Antibiotic Research Journal Article
In: ACS APPLIED MATERIALS & INTERFACES, vol. 15, no. 10, pp. 12766-12776, 2023, ISSN: 1944-8244.
@article{WOS:000944526500001,
title = {Biosensor for Multimodal Characterization of an Essential ABC
Transporter for Next-Generation Antibiotic Research},
author = {Karan Bali and Charlotte Guffick and Reece McCoy and Zixuan Lu and Clemens F. Kaminski and Ioanna Mela and Roisin M. Owens and Hendrik W. Veen},
doi = {10.1021/acsami.2c21556},
issn = {1944-8244},
year = {2023},
date = {2023-03-01},
journal = {ACS APPLIED MATERIALS & INTERFACES},
volume = {15},
number = {10},
pages = {12766-12776},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Fullerton, J.; Hierro-Rodriguez, A.; Donnelly, C.; Sanz-Hernandez, D.; Skoric, L.; MacLaren, D. A.; Fernandez-Pacheco, A.
Controlled evolution of three-dimensional magnetic states in strongly coupled cylindrical nanowire pairs Journal Article
In: NANOTECHNOLOGY, vol. 34, no. 12, 2023, ISSN: 0957-4484.
@article{WOS:000920108700001,
title = {Controlled evolution of three-dimensional magnetic states in strongly
coupled cylindrical nanowire pairs},
author = {J. Fullerton and A. Hierro-Rodriguez and C. Donnelly and D. Sanz-Hernandez and L. Skoric and D. A. MacLaren and A. Fernandez-Pacheco},
doi = {10.1088/1361-6528/aca9d6},
issn = {0957-4484},
year = {2023},
date = {2023-03-01},
journal = {NANOTECHNOLOGY},
volume = {34},
number = {12},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Baikie, Tomi K.; Wey, Laura T.; Lawrence, Joshua M.; Medipally, Hitesh; Reisner, Erwin; Nowaczyk, Marc M.; Friend, Richard H.; Howe, Christopher J.; Schnedermann, Christoph; Rao, Akshay; Zhang, Jenny Z.
Photosynthesis re-wired on the pico-second timescale Journal Article
In: NATURE, 2023, ISSN: 0028-0836.
@article{WOS:000957757400018,
title = {Photosynthesis re-wired on the pico-second timescale},
author = {Tomi K. Baikie and Laura T. Wey and Joshua M. Lawrence and Hitesh Medipally and Erwin Reisner and Marc M. Nowaczyk and Richard H. Friend and Christopher J. Howe and Christoph Schnedermann and Akshay Rao and Jenny Z. Zhang},
doi = {10.1038/s41586-023-05763-9},
issn = {0028-0836},
year = {2023},
date = {2023-03-01},
journal = {NATURE},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Baikie, Tomi K.; Wey, Laura T.; Lawrence, Joshua M.; Medipally, Hitesh; Reisner, Erwin; Nowaczyk, Marc M.; Friend, Richard H.; Howe, Christopher J.; Schnedermann, Christoph; Rao, Akshay; Zhang, Jenny Z.
Photosynthesis re-wired on the pico-second timescale Journal Article
In: NATURE, vol. 615, no. 7954, pp. 836+, 2023, ISSN: 0028-0836.
@article{WOS:001168962000009,
title = {Photosynthesis re-wired on the pico-second timescale},
author = {Tomi K. Baikie and Laura T. Wey and Joshua M. Lawrence and Hitesh Medipally and Erwin Reisner and Marc M. Nowaczyk and Richard H. Friend and Christopher J. Howe and Christoph Schnedermann and Akshay Rao and Jenny Z. Zhang},
issn = {0028-0836},
year = {2023},
date = {2023-03-01},
journal = {NATURE},
volume = {615},
number = {7954},
pages = {836+},
publisher = {NATURE PORTFOLIO},
address = {HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY},
abstract = {Photosystems II and I (PSII, PSI) are the reaction centre-containing
complexes driving the light reactions of photosynthesis; PSII performs
light-driven water oxidation and PSI further photo-energizes harvested
electrons. The impressive efficiencies of the photosystems have
motivated extensive biological, artificial and biohybrid approaches to
`re-wire' photosynthesis for higher biomass-conversion efficiencies and
new reaction pathways, such as H2 evolution or CO2 fixation1,2. Previous
approaches focused on charge extraction at terminal electron acceptors
of the photosystems3. Electron extraction at earlier steps, perhaps
immediately from photoexcited reaction centres, would enable greater
thermodynamic gains; however, this was believed impossible with reaction
centres buried at least 4 nm within the photosystems4,5. Here, we
demonstrate, using in vivo ultrafast transient absorption (TA)
spectroscopy, extraction of electrons directly from photoexcited PSI and
PSII at early points (several picoseconds post-photo-excitation) with
live cyanobacterial cells or isolated photosystems, and exogenous
electron mediators such as 2,6-dichloro-1,4benzoquinone (DCBQ) and
methyl viologen. We postulate that these mediators oxidize peripheral
chlorophyll pigments participating in highly delocalized charge-transfer
states after initial photo-excitation. Our results challenge previous
models that the photoexcited reaction centres are insulated within the
photosystem protein scaffold, opening new avenues to study and re-wire
photosynthesis for biotechnologies and semi-artificial photosynthesis.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
complexes driving the light reactions of photosynthesis; PSII performs
light-driven water oxidation and PSI further photo-energizes harvested
electrons. The impressive efficiencies of the photosystems have
motivated extensive biological, artificial and biohybrid approaches to
`re-wire' photosynthesis for higher biomass-conversion efficiencies and
new reaction pathways, such as H2 evolution or CO2 fixation1,2. Previous
approaches focused on charge extraction at terminal electron acceptors
of the photosystems3. Electron extraction at earlier steps, perhaps
immediately from photoexcited reaction centres, would enable greater
thermodynamic gains; however, this was believed impossible with reaction
centres buried at least 4 nm within the photosystems4,5. Here, we
demonstrate, using in vivo ultrafast transient absorption (TA)
spectroscopy, extraction of electrons directly from photoexcited PSI and
PSII at early points (several picoseconds post-photo-excitation) with
live cyanobacterial cells or isolated photosystems, and exogenous
electron mediators such as 2,6-dichloro-1,4benzoquinone (DCBQ) and
methyl viologen. We postulate that these mediators oxidize peripheral
chlorophyll pigments participating in highly delocalized charge-transfer
states after initial photo-excitation. Our results challenge previous
models that the photoexcited reaction centres are insulated within the
photosystem protein scaffold, opening new avenues to study and re-wire
photosynthesis for biotechnologies and semi-artificial photosynthesis.
Morzy, Diana; Tekin, Cem; Caroprese, Vincenzo; Rubio-Sanchez, Roger; Michele, Lorenzo Di; Bastings, Maartje M. C.
Interplay of the mechanical and structural properties of DNA nanostructures determines their electrostatic interactions with lipid membranes Journal Article
In: NANOSCALE, vol. 15, no. 6, pp. 2849-2859, 2023, ISSN: 2040-3364.
@article{WOS:000919384600001,
title = {Interplay of the mechanical and structural properties of DNA
nanostructures determines their electrostatic interactions with lipid
membranes},
author = {Diana Morzy and Cem Tekin and Vincenzo Caroprese and Roger Rubio-Sanchez and Lorenzo Di Michele and Maartje M. C. Bastings},
doi = {10.1039/d2nr05368c},
issn = {2040-3364},
year = {2023},
date = {2023-02-01},
journal = {NANOSCALE},
volume = {15},
number = {6},
pages = {2849-2859},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Krainer, Georg; Saar, Kadi L.; Arter, William E.; Welsh, Timothy J.; Czekalska, Magdalena A.; Jacquat, Raphael P. B.; Peter, Quentin; Traberg, Walther C.; Pujari, Arvind; Jayaram, Akhila K.; Challa, Pavankumar; Taylor, Christopher G.; Linden, Lize-Mari; Franzmann, Titus; Owens, Roisin M.; Alberti, Simon; Klenerman, David; Knowles, Tuomas P. J.
Direct digital sensing of protein biomarkers in solution Journal Article
In: NATURE COMMUNICATIONS, vol. 14, no. 1, 2023.
@article{WOS:000954587000008,
title = {Direct digital sensing of protein biomarkers in solution},
author = {Georg Krainer and Kadi L. Saar and William E. Arter and Timothy J. Welsh and Magdalena A. Czekalska and Raphael P. B. Jacquat and Quentin Peter and Walther C. Traberg and Arvind Pujari and Akhila K. Jayaram and Pavankumar Challa and Christopher G. Taylor and Lize-Mari Linden and Titus Franzmann and Roisin M. Owens and Simon Alberti and David Klenerman and Tuomas P. J. Knowles},
doi = {10.1038/s41467-023-35792-x},
year = {2023},
date = {2023-02-01},
journal = {NATURE COMMUNICATIONS},
volume = {14},
number = {1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Toprakcioglu, Zenon; Wiita, Elizabeth G.; Jayaram, Akhila K.; Gregory, Rebecca C.; Knowles, Tuomas P. J.
Selenium Silk Nanostructured Films with Antifungal and Antibacterial Activity Journal Article
In: ACS APPLIED MATERIALS & INTERFACES, 2023, ISSN: 1944-8244.
@article{WOS:000936202800001,
title = {Selenium Silk Nanostructured Films with Antifungal and Antibacterial
Activity},
author = {Zenon Toprakcioglu and Elizabeth G. Wiita and Akhila K. Jayaram and Rebecca C. Gregory and Tuomas P. J. Knowles},
doi = {10.1021/acsami.2c21013},
issn = {1944-8244},
year = {2023},
date = {2023-02-01},
journal = {ACS APPLIED MATERIALS & INTERFACES},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Oakes, G. A.; Ciriano-Tejel, V. N.; Wise, D. F.; Fogarty, M. A.; Lundberg, T.; Laine, C.; Schaal, S.; Martins, F.; Ibberson, D. J.; Hutin, L.; Bertrand, B.; Stelmashenko, N.; Robinson, J. W. A.; Ibberson, L.; Hashim, A.; Siddiqi, I.; Lee, A.; Vinet, M.; Smith, C. G.; Morton, J. J. L.; Gonzalez-Zalba, M. F.
Fast High-Fidelity Single-Shot Readout of Spins in Silicon Using a Single-Electron Box Journal Article
In: PHYSICAL REVIEW X, vol. 13, no. 1, 2023, ISSN: 2160-3308.
@article{WOS:000943163000001,
title = {Fast High-Fidelity Single-Shot Readout of Spins in Silicon Using a
Single-Electron Box},
author = {G. A. Oakes and V. N. Ciriano-Tejel and D. F. Wise and M. A. Fogarty and T. Lundberg and C. Laine and S. Schaal and F. Martins and D. J. Ibberson and L. Hutin and B. Bertrand and N. Stelmashenko and J. W. A. Robinson and L. Ibberson and A. Hashim and I. Siddiqi and A. Lee and M. Vinet and C. G. Smith and J. J. L. Morton and M. F. Gonzalez-Zalba},
doi = {10.1103/PhysRevX.13.011023},
issn = {2160-3308},
year = {2023},
date = {2023-02-01},
journal = {PHYSICAL REVIEW X},
volume = {13},
number = {1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Jacquat, Raphael P. B.; Krainer, Georg; Peter, Quentin A. E.; Babar, Ali Nawaz; Vanderpoorten, Oliver; Xu, Catherine K.; Welsh, Timothy J.; Kaminski, Clemens F.; Keyser, Ulrich F.; Baumberg, Jeremy J.; Knowles, Tuomas P. J.
Single-Molecule Sizing through Nanocavity Confinement Journal Article
In: NANO LETTERS, 2023, ISSN: 1530-6984.
@article{WOS:000937920900001,
title = {Single-Molecule Sizing through Nanocavity Confinement},
author = {Raphael P. B. Jacquat and Georg Krainer and Quentin A. E. Peter and Ali Nawaz Babar and Oliver Vanderpoorten and Catherine K. Xu and Timothy J. Welsh and Clemens F. Kaminski and Ulrich F. Keyser and Jeremy J. Baumberg and Tuomas P. J. Knowles},
doi = {10.1021/acs.nanolett.1c04830},
issn = {1530-6984},
year = {2023},
date = {2023-02-01},
journal = {NANO LETTERS},
keywords = {},
pubstate = {published},
tppubtype = {article}
}