Article
Multidisciplinary Sciences
Thomas Simon, Xiaoyan Li, Jerome Martin, Dmitry Khlopin, Odile Stephan, Mathieu Kociak, Davy Gerard
Summary: This article introduces the use of aluminum self-similar structures as broadband optical antennas and experimentally demonstrates that these structures can support multiple resonances that can be scaled over a broad spectral range. Such multiresonant structures are highly valuable for applications in nonlinear optics, light harvesting and photodetection, as well as surface-enhanced infrared absorption spectroscopy.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Nanoscience & Nanotechnology
Marion Castilla, Silvere Schuermans, Davy Gerard, Jerome Martin, Thomas Maurer, Uri Hananel, Gil Markovich, Jerome Plain, Julien Proust
Summary: This article reports on a method for the production of crystalline aluminum nanoparticles starting from commercial aluminum foils without the use of a catalyst. The obtained nanoparticles have long-term stability in ethanol and exhibit well-defined plasmonic resonances.
Article
Chemistry, Multidisciplinary
Arash Ahmadivand
Summary: This study reports on the near-ultraviolet light emission from enhanced tunneling of electrons using aluminum nanoelectrodes, which have high electron density and low screening capabilities compared to traditional noble metals. This breakthrough enables the generation of high-energy beams and accelerates the implementation of electrically tunable and ultradense UV light sources.
Article
Chemistry, Multidisciplinary
Le Thi Quynh, Chang-Wei Cheng, Chiao-Tzu Huang, Soniya Suganthi Raja, Ragini Mishra, Meng-Ju Yu, Yu-Jung Lu, Shangjr Gwo
Summary: This article demonstrates the growth of aluminum (Al), copper (Cu), gold (Au), and silver (Ag) epitaxial films on two-dimensional muscovite mica substrates using van der Waals heteroepitaxy. The resulting plasmonic metal films on mica offer the ability to design and fabricate controlled plasmonic nanostructures with tunable surface plasmon resonances. The use of these films enables the development of plasmonic sensors and plasmonic color filters with high performance.
Article
Chemistry, Multidisciplinary
David Renard, Shu Tian, Minhan Lou, Oara Neumann, Jian Yang, Aaron Bayles, David Solti, Peter Nordlander, Naomi J. Halas
Summary: Aluminum nanocrystals exhibit efficient broadband photothermal heating, with increased stability in water through functionalization with silica, and transition from UV-resonant response to broadband absorptive response.
Article
Chemistry, Multidisciplinary
Aaron Bayles, Shu Tian, Jingyi Zhou, Lin Yuan, Yigao Yuan, Christian R. Jacobson, Corbin Farr, Ming Zhang, Dayne F. Swearer, David Solti, Minghe Lou, Henry O. Everitt, Peter Nordlander, Naomi J. Halas
Summary: This study introduces Al@TiO2 core-shell nanoparticles as active photocatalysts for hot electron-mediated H-2 dissociation reaction and hot hole-mediated methanol dehydration. The research indicates that the photocatalytic mechanism involves plasmonic hot carrier generation and subsequent transfer into the TiO2 layer. The Al@TiO2 antenna-reactor offers an earth-abundant solution for the future design of visible-light-driven plasmonic photocatalysts.
Article
Chemistry, Multidisciplinary
Christian R. Jacobson, Gang Wu, Lawrence B. Alemany, Gopal Narmada Naidu, Minhan Lou, Yigao Yuan, Aaron Bayles, Benjamin D. Clark, Yukun Cheng, Arzeena Ali, Ah-Lim Tsai, Ian A. Tonks, Peter Nordlander, Naomi J. Halas
Summary: This study introduces a dual catalyst approach for the synthesis of Al nanocrystals, allowing control over both size and shape. By using two catalysts with different functions, precise control over the size and shape of the resulting Al nanocrystals can be achieved.
Article
Chemistry, Multidisciplinary
Da Won Lee, Ho Young Woo, Dong Hyun David Lee, Myung-Chul Jung, Donguk Lee, MinJi Lee, Jong Bae Kim, Ji Yeon Chae, Myung Joon Han, Taejong Paik
Summary: This paper presents the N,N-dimethylformamide (DMF)-assisted shape evolution of highly uniform and shape-pure copper nanocrystals (Cu NCs) for the first time. The shape of Cu NCs can be systematically controlled by adding different amounts of DMF to the reaction mixture in high-temperature conditions while maintaining high size uniformity and shape purity. The origin of shape evolution is understood through first-principles density functional theory calculations, and the shape-dependent plasmonic properties and facet-dependent electrocatalytic activities of the Cu NCs are systematically investigated.
Article
Materials Science, Multidisciplinary
Christian Beynis
Summary: The study presents a new counterdoping method for synthesizing copper sulfide quantum dots using a catalyst-assisted growth of copper indium sulfides. By utilizing indium to reduce the carrier density of copper sulfide, the semiconductor becomes suitable for multiple applications, while also providing an original method to estimate carrier density.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Ruotian Chen, Deyun Zhang, Ziyuan Wang, Dongfeng Li, Lingcong Zhang, Xiuli Wang, Fengtao Fan, Can Li
Summary: By decoupling charge transfer and surface reaction processes through operando surface potential measurements, we find that the surface reaction enhances the photovoltage via a reaction-related photoinduced charge transfer regime on a SrTiO3 photoanode. We show that the change in surface potential induced by the reaction-related charge transfer is linearly correlated to the interfacial charge transfer rate of water oxidation, independent of applied bias and light intensity, revealing a general rule for interfacial transfer of photogenerated minority carriers. We anticipate this linear rule to be a phenomenological theory for describing interfacial charge transfer in photoelectrocatalysis.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Thomas Jauk, Harald Ditlbacher, Florian Lackner, Wolfgang E. Ernst, Andreas Hohenau, Joachim R. Krenn
Summary: In this study, we used photoemission electron microscopy (PEEM) to image surface plasmons on aluminum surfaces in the ultraviolet and blue spectral range. Plasmons were excited by illuminating straight aluminum ridges with subwavelength cross section on flat aluminum films. We observed interference patterns that revealed the propagation directions and decay lengths of the surface plasmons. Our results demonstrate the extension of PEEM imaging of surface plasmons into the ultraviolet region.
Article
Materials Science, Multidisciplinary
Nobuyuki Terasaki, Moe Sakaguchi, Hajime Chiba, Touyou Ohashi, Yoshiyuki Nagatomo, Yoshirou Kuromitsu, Tohru Sekino, Kevin M. Knowles
Summary: By investigating the interfacial reactions related to the TiN layer growth process between nanocrystalline epitaxial layers of AlN and a Ti-containing metal brazing or sintering layer, it was found that the TiN layer produced at the metal/AlN interfaces consisted of TiN particles smaller than 50 nm and grain boundary phases including Al-containing Ag and Al-containing Cu. The concentration of Al within the TiN layer decreased as the distance increased from the AlN epitaxial layer, indicating the existence of a local Al-based eutectic liquid phase and elemental transport through this eutectic liquid phase.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Physics, Applied
Tomoyuki Oniyama, Yogendra M. Gupta, Guruswami Ravichandran
Summary: The results of the experiment show that some anisotropy is preserved in Mo single crystal Hugoniots even at high stresses, although the differences compared to polycrystalline Mo are not significant.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Applied
Ji-Young Lee, Xueling Cheng, Yunshan Wang
Summary: The study reports native fluorescence enhancement of tryptophan on aluminum hole-arrays, achieving a 47x net enhancement factor, the highest reported for tryptophan molecules in the literature. Compared to an aluminum thin film, an aluminum hole-array shows significant improvement in photon bleaching rate and photon yield.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Daniel Olsen, Kyle Uhlenhake, Mateo Gomez, Metin Ornek, Steven F. Son, Min Zhou
Summary: By using coupled microscale electromagnetic and thermal simulations, the interactions between PVDF/nAl composites and EM waves are analyzed. The energy deposition rate and temperature fields in the materials are calculated, and it is found that the average temperature and depth of significant heating correlate well with the ignition trends.
Article
Nanoscience & Nanotechnology
Jing S. Pang, Ioannis G. Theodorou, Anthony Centeno, Peter K. Petrov, Neil M. Alford, Mary P. Ryan, Fang Xie
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Multidisciplinary
Miguel A. Gomez-Gonzalez, Mohamed A. Koronfel, Angela Erin Goode, Maryam Al-Ejji, Nikolaos Voulyoulis, Julia E. Parker, Paul D. Quinn, Thomas Bligh Scott, Fang Xie, Marian L. Yallop, Alexandra E. Porter, Mary P. Ryan
Article
Chemistry, Physical
Qianfan Jiang, Xiangyu Xie, D. Jason Riley, Fang Xie
JOURNAL OF CHEMICAL PHYSICS
(2020)
Article
Chemistry, Multidisciplinary
Hao Zhang, Qianfan Jiang, Joseph H. L. Hadden, Fang Xie, D. Jason Riley
Summary: The authors developed an ammonia-assisted in situ cation-exchange method for synthesizing N-doped carbon nanosheets and investigated their exceptional catalytic performance for water splitting. The nanosheets demonstrated outstanding efficiency and stability for both hydrogen and oxygen evolution reactions, outperforming commercial catalysts, with theoretical calculations attributing the superior performance to the affinity difference of Pd and Ni atoms for gas atoms.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Physics, Applied
Savita M. Sundaresan, S. M. Fothergill, Tanveer A. Tabish, Mary Ryan, Fang Xie
Summary: Early diagnosis of diseases is crucial for conservative treatment and better patient outcomes. Fluorescence biosensing, utilizing aptamers and metal enhanced fluorescence techniques, offers high sensitivity detection of biomarkers, showing great potential in clinical applications.
APPLIED PHYSICS REVIEWS
(2021)
Article
Physics, Applied
Jiamin Xu, William Morton, Daniel Jones, Tanveer A. Tabish, Mary P. Ryan, Fang Xie
Summary: This study presents a unique silica template method for synthesizing cetrimonium bromide free silver nanorods (AgNRs), and explores the application of AgNRs in metal enhanced fluorescence (MEF). The results demonstrate that AgNRs can significantly increase the quantum yield and enhance the fluorescence intensity of visible/near-infrared fluorescent dyes.
APPLIED PHYSICS REVIEWS
(2022)
Article
Chemistry, Physical
William Morton, Caoimhe Joyce, Jonny Taylor, Mary Ryan, Stefano Angioletti-Uberti, Fang Xie
Summary: The research findings suggest that the geometric properties of gold nanostars can be referenced, similar to the way a nanosphere can be described by its radius, instead of solely relying on the local surface plasmon resonance (LSPR) of the structure. The suggested average tip approximation simplifies the complex nature of nanostars in simulations. By comparing the characteristics of modeled nanostars to synthesized nanostars, the volume, surface area, and number of tips can be approximated without the need for extensive characterization. Understanding the nanoparticle geometry can have implications for drug delivery capacity, identification of hot spots for electron microscopy imaging, and the interaction of particles with cells.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Hao Zhang, Jiefeng Diao, Mengzheng Ouyang, Hossein Yadegari, Mingxuan Mao, Mengnan Wang, Graeme Henkelman, Fang Xie, D. Jason Riley
Summary: In this study, trimetallic heterostructured core-shell nanoboxes based on Prussian blue analogues (Ni-Co@Fe-Co PBA) were synthesized and showed remarkable electrocatalytic performance for the hydrogen evolution reaction (HER) in alkaline freshwater and simulated seawater.
Article
Chemistry, Physical
Tian Tian, Jiamin Xu, Ying Xiong, Nitya Ramanan, Mary Ryan, Fang Xie, Camille Petit
Summary: Study finds that metal-organic frameworks can serve as precursors for metal-functionalized porous boron nitride, expanding the potential of porous boron nitride in catalysis and optical applications. The type of metal in the MOF precursor also impacts the purity of the porous boron nitride.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Darinka Primc, Luca Indrizzi, Elena Tervoort, Fang Xie, Markus Niederberger
Summary: Mesocrystals are superstructures of crystallographically aligned nanoparticles displaying advanced morphologies and properties beyond those from size and shape alone. The first synthesis of Cu3N mesocrystals with structure-directing agents and subtle tuning of reaction parameters is reported. Detailed structural characterizations reveal non-classical crystallization of Cu3N mesocrystals and variations in sizes and morphologies traced back to distinct attachment scenarios of subunits. Conversion processes of Cu3N mesocrystals into multicomponent/heterostructured Cu3N-Cu2O mesocrystals and subsequently into Cu2O nanocages involve a two-step mechanism driven by nanoscale Kirkendall effect.
Article
Materials Science, Multidisciplinary
C. Joyce, S. M. Fothergill, F. Xie
MATERIALS TODAY ADVANCES
(2020)
Article
Chemistry, Multidisciplinary
Rosalia Lopes Rodrigues, Fang Xie, Alexandra E. Porter, Mary P. Ryan
NANOSCALE ADVANCES
(2020)
Article
Chemistry, Multidisciplinary
Ke Wang, Chang Li, Zheng Li, Huizeng Li, An Li, Kaixuan Li, Xintao Lai, Qing Liao, Fang Xie, Mingzhu Li, Yanlin Song
Article
Chemistry, Multidisciplinary
Ioannis G. Theodorou, Pakatip Ruenraroengsak, Daniel A. Gonzalez-Carter, Qianfan Jiang, Ernesto Yague, Eric O. Aboagye, R. Charles Coombes, Alexandra E. Porter, Mary P. Ryan, Fang Xie