Results 71 to 80 of about 34,297 (264)

Assessing corneal biomechanics with Brillouin spectro-microscopy

Faraday Discussions, 2016
A new Brillouin spectro-microscope was designed and built to investigate the mechanical properties of bovine and human corneas. This instrument integrates a single-stage virtually imaged phased array spectrometer with a novel adaptive-optics interferometric filter to achieve unprecedented rejection of the elastic background signal.
Guillaume Lepert, Ricardo M. Gouveia, Che J. Connon, Carl Paterson   +3 more
openaire   +4 more sources

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Principal component analysis in application to Brillouin microscopy data

JPhys Photonics
Brillouin microscopy has recently emerged as a new bio-imaging modality that provides information on the microscale mechanical properties of biological materials, cells and tissues.
Hadi Mahmodi, Christopher G Poulton, Mathew N Leslie, Glenn Oldham, Hui Xin Ong, Steven J Langford, Irina V Kabakova   +6 more
doaj   +1 more source

Friedel oscillations due to Fermi arcs in Weyl semimetals

, 2012
Weyl semimetals harbor unusual surface states known as Fermi arcs, which are essentially disjoint segments of a two dimensional Fermi surface. We describe a prescription for obtaining Fermi arcs of arbitrary shape and connectivity by stacking alternate ...
A. Kitaev, G. Volovik, Pavan Hosur
core   +1 more source

A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments

Advanced Materials, EarlyView.
The synthesis of a novel nanoporous graphene (NPG) is reported with biphenylene segments via thermal fusion of 12‐armchair porous graphene nanoribbons grown on gold surfaces. Characterization using STM, AFM, and DFT reveals low‐defect semiconducting behaviour and tunable band gaps.
Paula Angulo‐Portugal, Martin Irizar, Longfeng Huang, Mamun Sarker, Mustafa A. Ashoush, Zakaria M. Abd El‐Fattah, Johannes Barth, Frederik Schiller, Afaf El‐Sayed, Fei Gao, Dimas G. de Oteyza, Alexander Sinitskii, Aran Garcia‐Lekue, Martina Corso, Ignacio Piquero‐Zulaica   +14 more
wiley   +1 more source

The hidden limit in light: intrinsic noise reshaping Brillouin metrology

Light: Science & Applications
Spontaneous Brillouin scattering is widely used to probe the mechanical and thermal state of matter, yet it has been assumed to be intrinsically stable.
Leonardo Rossi, Gabriele Bolognini
doaj   +1 more source

$Pb_{0.4}Bi_{1.6}Sr_{2}Ca_{1}Cu_{2}O_{8+x}$ and Oxygen Stoichiometry: Structure, Resistivity, Fermi Surface Topology and Normal State Properties

, 1994
$Pb_{0.4}Bi_{1.6}Sr_2CaCu_2O_{8+x}$ ($Bi(Pb)-$2212) single crystal samples were studied using transmission electron microscopy (TEM), $ab-$plane ($\rho_{ab}$) and $c-$axis ($\rho_c$) resistivity, and high resolution angle-resolved ultraviolet ...
A.A. Abrikosov, A.Q. Pham, B. Batlogg, B. Koch, B.O. Wells, B.W. Veal, C. Kendziora, C.G. Olson, C.H. Chen, C.J. Humphreys, Chen Xianhui, Chen Xianhui, D. Dessau, E. Dagotto, E.R. Ratner, E.W. Plummer, F.X. Régi, G. Margaritondo, H. Berger, H. Claus, H. Krakauer, J. Hermanson, J. Tobin, J. Yu, J.C. Campuzano, J.D. Jorgensen, Jian Ma, K. Gofron, K.K Fung, M. Onellion, M. Weber, N. Fukushima, O. Eibl, P. Aebi, P. Alméras, P. Goodman, R. J. Kelley, R. Liu, R. Liu, R. Ramesh, R.J. Kelley, R.J. Kelley, S. Massidda, S. Massidda, S.A. Sunshine, W.E. Pickett, X. Y. Cai, X.L. Wu, Y. Feng, Y. Matsui   +49 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

A framework for spontaneous Brillouin noise: unveiling fundamental limits in Brillouin metrology

Light: Science & Applications
Spontaneous Brillouin scattering (SpBS) enables non-contact probing of mechanical and thermodynamic material properties, underpinning transformative technologies such as distributed optical fiber sensing and high-resolution microscopy. Achieving ultimate
Simeng Jin, Shuai Yao, Zhisheng Yang, Zixuan Du, Xiaobin Hong, Marcelo A. Soto, Jingjing Xie, Long Zhang, Fan Yang, Jian Wu   +9 more
doaj   +1 more source

Single-shot impulsive stimulated Brillouin microscopy by tailored ultrashort pulses

Journal of the European Optical Society-Rapid Publications
Brillouin microscopy has become an important tool for investigating the mechanical properties of tissue. The recently developed Impulsive Stimulated Brillouin Scattering (ISBS) promises a label-free, non-invasive measurements of viscoelastic properties ...
Krause David, Liebig Leon, Boehm John, Koukourakis Nektarios, Czarske Juergen W.   +4 more
doaj   +1 more source