Article
Physics, Condensed Matter
Yogita Kumari, Lokesh Kumar Jangir, Anil Kumar, Manoj Kumar, Kamlendra Awasthi
Summary: Terbium doped titania nanoparticles were synthesized with varying concentrations of Tb+3 ions using the sol-gel method. The crystallite size decreased with increasing Tb+3 ions concentration, while the absorption showed a slight red shift and the band gap decreased after doping. The photoluminescence intensity initially increased with Tb+3 concentration, but decreased with further addition due to cluster formation.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Chemistry, Multidisciplinary
Mei Wang, Asher C. Leff, Yue Li, Taylor J. Woehl
Summary: This study successfully demonstrated the in situ controlled synthesis of alloyed AuCu nanocrystals under LP-TEM, while maintaining the molecular structure of metal thiolate complexes. The research revealed that polymer capping ligands not only have known functions during LP-TEM synthesis, but also prevent copper oxidation and facilitate the formation of prenucleation cluster intermediates.
Article
Chemistry, Physical
Jin-Hu Dou, Maxx Q. Arguilla, Yi Luo, Jian Li, Weizhe Zhang, Lei Sun, Jenna L. Mancuso, Luming Yang, Tianyang Chen, Lucas R. Parent, Grigorii Skorupskii, Nicole J. Libretto, Chenyue Sun, Min Chieh Yang, Phat Vinh Dip, Edward J. Brignole, Jeffrey T. Miller, Jing Kong, Christopher H. Hendon, Junliang Sun, Mircea Dinca
Summary: Researchers have successfully grown single crystals of 2D metal-organic frameworks up to 200 µm in size by balancing in-plane and out-of-plane interactions, revealing anisotropic transport and a clear correlation between conductivity and the nature of the metal cation in the sheets.
Article
Engineering, Environmental
Zhiming Zhang, Benhur K. Asefaw, Yi Xiong, Huan Chen, Youneng Tang
Summary: This study found that extracellular selenium nanoparticles (SeNPs) production on the biocathode was significantly higher compared to conventional reactors. Analysis of the microbial community on the cathode revealed an enrichment of Ospira oryzae, Desulfovibrio, Stenotrophomonas, and Rhodocyclaceae, which are known to produce both intracellular and extracellular SeNPs in conventional biofilm reactors. The observation suggests that microbes prefer to produce extracellular SeNPs on the cathode due to energy considerations.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Energy & Fuels
Mostafa Othman, Tian Zhang, David P. McMeekin, Sebastian O. Fuerer, Wenxin Mao, Weilun Li, Andrew D. Scully, Anthony S. R. Chesman, Philip N. H. Nakashima, Udo Bach, Joanne Etheridge
Summary: The use of guanidinium iodide (GAI) cation as an interface engineering technique in perovskite solar cells improves stability by passivating defects on surfaces and grain boundaries. However, the relationship between structural and photophysical properties is not well understood. This study demonstrates that an optimal concentration of GAI can eliminate excess PbI2, improve crystallinity, and increase grain size. Higher concentrations induce the formation of new phases and reduce crystallinity and grain size. GAI treatment also helps remove microscale heterogeneities, resulting in optimum device performance.
Article
Chemistry, Physical
Zonglin Li, Mingxin Xie, Guozheng Nie, Junhui Wang, Lujun Huang
Summary: In this study, we developed an optical biosensor based on an all-dielectric metasurface with broken symmetry. The biosensor exhibited excellent performance, thanks to the high-Q quasi-bound states in the continuum (qBICs) and the efficient field confinement. It has potential applications in extreme biochemical sensing, such as COVID-19 detection at ultralow concentrations.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Franz-Philipp Schmidt, Arthur Losquin, Michal Horak, Ulrich Hohenester, Michael Stoger-Pollach, Joachim R. Krenn
Summary: The study utilizes cathodoluminescence (CL) spectroscopy in a transmission electron microscope to investigate the radial breathing mode of plasmonic silver nanodisks. It reveals a spectral shift in the CL spectra acquired from both sides induced by the electron beam, confirmed through numerical simulations. The interference of CL emission patterns of an electron-beam-induced dipole and the breathing mode is identified as a physical effect that can limit fidelity in CL measurements.
Article
Chemistry, Multidisciplinary
Rosa Carotenuto, Margherita Tussellino, Sabato Fusco, Giovanna Benvenuto, Fabio Formiggini, Bice Avallone, Chiara Maria Motta, Chiara Fogliano, Paolo Antonio Netti
Summary: This study found that both gold and silver nanoparticles can induce morphological anomalies and modify gene expression in Xenopus laevis, suggesting their toxicity and the need for further research on their activity in animals and humans.
Article
Chemistry, Multidisciplinary
Jingshan S. Du, Kun He, Yaobin Xu, Carolin B. Wahl, David D. Xu, Vinayak P. Dravid, Chad A. Mirkin
Summary: The study demonstrates that bimetallic hetero-nanostructures composed of phase-segregated metals undergo galvanic corrosion in aqueous environments, resulting in the formation of stable half-spheroid particles. The two-stage corrosion process of Cu and Ag is observed using in situ scanning transmission electron microscopy, and treating the structures with Ar plasma enhances their stability against corrosion by transforming the native oxide into a denser CuO layer.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
B. Lalitha Devi, U. Chaitra, Shashikanth Hathwara, Akshayakumar Kompa
Summary: The green chemical route of synthesis and precursor compounds during the synthesis of ZnS nanoparticles have a significant impact on their properties. The synthesis method of green chemical route is proven to be advantageous in imparting novel properties to the NPs. This study involves the synthesis of uncapped and starch capped ZnS NPs using a simple chemical coprecipitation technique. The structural and morphological features of the samples were analyzed using XRD and FESEM, while FTIR confirmed capping by starch. Composition analysis was conducted using EDS, and optical properties were analyzed through UV-absorption spectra and PL measurements. The formation of ZnS NPs with cubic phase and the quantum confinement effect were observed. The intensity of PL decreased with an increase in the capping agent (starch) concentration. These heavy metal-free and non-toxic ZnS nanoparticles are suitable for optoelectronic applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Kevin M. Roccapriore, Shin-Hum Cho, Andrew R. Lupini, Delia J. Milliron, Sergei Kalinin
Summary: The spatial confinement of matter in functional nanostructures has positioned them at the forefront of nanoscience, serving as playgrounds for exotic physics and quantum phenomena as well as finding applications in various fields. Through modern synthesis processes and precise sculpting, the plasmonic response of nanoparticles can be effectively modified, offering a wide range of possibilities for nanophotonic design.
Article
Nanoscience & Nanotechnology
Moritz Quincke, Tibor Lehnert, Itai Keren, Narine Moses Badlyan, Fabian Port, Manuel Goncalves, Michael J. Mohn, Janina Maultzsch, Hadar Steinberg, Ute Kaiser
Summary: Understanding the positions, densities, and atomic structures of crystallographic defects is crucial for the electronic and optical applications of two-dimensional materials and their vertical heterostructures. By combining device measurements with atomically resolved transmission electron microscopy (TEM) experiments, researchers have developed a generic sample platform that allows imaging of freestanding 2D materials in TEM, followed by experiments on the same sample area placed on an arbitrary substrate or embedded into a heterostructure device. The platform enables the creation and manipulation of atomic defects using the electron beam.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Thilini U. Dissanayake, Mei Wang, Taylor J. Woehl
Summary: This study utilized LP-TEM and FM techniques to investigate the crosslinking and chain scission reactions of polymeric nanoparticle ligands under electron beam irradiation, revealing their impact on ligand coverage and emphasizing the importance of controlling electron beam radiation chemistry to avoid disturbances.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Multidisciplinary Sciences
Nadezda Varkentina, Yves Auad, Steffi Y. Woo, Alberto Zobelli, Laura Bocher, Jean-Denis Blazit, Xiaoyan Li, Marcel Tence, Kenji Watanabe, Takashi Taniguchi, Odile Stephan, Mathieu Kociak, Luiz H. G. Tizei
Summary: Tracking the lifespan of optical excitations is crucial in understanding the photophysics of materials. In this study, electron spectroscopies were used to explore the creation and decay of excitations in two representative optical materials. The developed cathodoluminescence excitation spectroscopy method allows for imaging energy transfer pathways at the nanometer scale.
Article
Biotechnology & Applied Microbiology
Yavuz S. Yalcin, Busra Aydin, Huan Chen, Samson Gichuki, Viji Sitther
Summary: In this study, the effects of nanoscale zero-valent iron nanoparticles (nZVIs) and ampicillin on lipid production and cellular structural changes in Fremyella diplosiphon strain B481-SD were investigated. The results showed that the individual application of 0.8 mg/L ampicillin, 3.2 mg/L nZVIs, and a combined regimen of both significantly increased total lipid abundance, fatty acid methyl ester (FAME) compositions, and alkene production. In addition, the combination regimen had a significant effect on monounsaturated fatty acids (MUFAs) and membrane lipids. Transmission electron microscopy studies revealed the presence of complex stacked membranes in the treated F. diplosiphon.
MICROBIAL CELL FACTORIES
(2023)
Article
Engineering, Electrical & Electronic
Francesco Settino, Felice Crupi, Subhajit Biswas, Justin D. Holmes, Ray Duffy
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2017)
Review
Chemistry, Physical
Subhajit Biswas, Sven Barth, Justin D. Holmes
Article
Multidisciplinary Sciences
Hugh G. Manning, Fabio Niosi, Claudia Gomes da Rocha, Allen T. Bellew, Colin O'Callaghan, Subhajit Biswas, Patrick F. Flowers, Benjamin J. Wiley, Justin D. Holmes, Mauro S. Ferreira, John J. Boland
NATURE COMMUNICATIONS
(2018)
Article
Materials Science, Multidisciplinary
Jessica Doherty, Subhajit Biswas, Dzianis Saladukha, Quentin Ramasse, Tara Shankar Bhattacharya, Achintya Singha, Tomasz J. Ochalski, Justin D. Holmes
JOURNAL OF MATERIALS CHEMISTRY C
(2018)
Article
Chemistry, Physical
Jessica Doherty, Subhajit Biswas, David McNulty, Clive Downing, Sreyan Raha, Colm O'Regan, Achintya Singha, Colm O'Dwyer, Justin D. Holmes
CHEMISTRY OF MATERIALS
(2019)
Article
Nanoscience & Nanotechnology
R. Meija, A. Livshits, J. Kosmaca, L. Jasulaneca, J. Andzane, S. Biswas, J. D. Holmes, D. Erts
Article
Nanoscience & Nanotechnology
Jessica Doherty, David McNulty, Subhajit Biswas, Kalani Moore, Michele Conroy, Ursel Bangert, Colm O'Dwyer, Justin D. Holmes
Review
Chemistry, Physical
Jessica Doherty, Subhajit Biswas, Emmanuele Galluccio, Christopher A. Broderick, Adria Garcia-Gil, Ray Duffy, Eoin P. O'Reilly, Justin D. Holmes
CHEMISTRY OF MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
Sreyan Raha, Sreemanta Mitra, Prasanna Kumar Mondal, Subhajit Biswas, Justin D. Holmes, Achintya Singha
Article
Chemistry, Multidisciplinary
Fionan Davitt, Hugh G. Manning, Fred Robinson, Samantha L. Hawken, Subhajit Biswas, Nikolay Petkov, Maart Druenen, John J. Boland, Gillian Reid, Justin D. Holmes
ADVANCED MATERIALS INTERFACES
(2020)
Article
Chemistry, Physical
Fionan Davitt, Killian Stokes, Timothy W. Collins, Manuel Roldan-Gutierrez, Fred Robinson, Hugh Geaney, Subhajit Biswas, Shery L. Y. Chang, Kevin M. Ryan, Gillian Reid, Justin D. Holmes
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Engineering, Electrical & Electronic
John Wellington John, Veerendra Dhyani, Yordan M. Georgiev, Anushka S. Gangnaik, Subhajit Biswas, Justin D. Holmes, Amit K. Das, Samit K. Ray, Samaresh Das
ACS APPLIED ELECTRONIC MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Jelena Kosmaca, Raimonds Meija, Mikk Antsov, Gunta Kunakova, Raitis Sondors, Igor Iatsunskyi, Emerson Coy, Jessica Doherty, Subhajit Biswas, Justin D. Holmes, Donats Erts
Article
Nanoscience & Nanotechnology
Hugh G. Manning, Subhajit Biswas, Justin D. Holmes, John J. Boland
ACS APPLIED MATERIALS & INTERFACES
(2017)
Article
Chemistry, Physical
Mohammad Aghazadeh Meshgi, Subhajit Biswas, David McNulty, Colm O'Dwyer, Giuseppe Alessio Verni, John O'Connell, Fionan Davitt, Ilse Letofsky-Papst, Peter Poelt, Justin D. Holmes, Christoph Marschner
CHEMISTRY OF MATERIALS
(2017)
