Results 91 to 100 of about 70,372 (266)

Elastic Scattering by Deterministic and Random Fractals: Self-Affinity of the Diffraction Spectrum

, 1996
The diffraction spectrum of coherent waves scattered from fractal supports is calculated exactly. The fractals considered are of the class generated iteratively by successive dilations and translations, and include generalizations of the Cantor set and ...
B. B. Mandelbrot, B. Dubuc, C. Allain, C. Allain, C. Allain, C. Iemmi, C. Kittel, D. Berger, D.A. Hamburger, D.A. Hamburger, Daniel A. Hamburger-Lidar, H.D. Bale, J. Guojun, J. Teixeira, J. Uozumi, J.K. Kjems, J.M. Ziman, J.R. Taylor, K. Jarrendahl, K.M. Watson, M. Barnsley, M. Born, M.S. Child, M.V. Berry, P. Pfeifer, P. Pfeifer, P.-z. Wong, P.-z. Wong, P.T. Callaghan, P.W. Schmidt, R.B Gerber, R.B. Gerber, R.G. Newton, S. Silver, T. Vicsek, T.A. Witten, Jr., V.V. Konotop, X. Sun   +37 more
core   +1 more source

Fermi Surface Nesting and Anomalous Hall Effect in Magnetically Frustrated Mn2PdIn

Advanced Functional Materials, EarlyView.
Mn2PdIn, a frustrated inverse Heusler alloy, showing electronic‐structure driven anomalous Hall effect with Weyl crossings, Fermi‐surface nesting and near‐zero magnetization ideal for low‐magnetization spintronics. Abstract Noncollinear magnets with near‐zero net magnetization and nontrivial bulk electronic topology hold significant promise for ...
Afsar Ahmed, Arnab Bhattacharya, Prashant Singh, Ajay Kumar, Tukai Singha, Anis Biswas, Yaroslav Mudryk, I. Das   +7 more
wiley   +1 more source

Highly Coherent Femtosecond Electron Pulses for Ultrafast Transmission Electron Microscopy [PDF]

EPJ Web of Conferences, 2019
We describe the implementation and detailed characterization of a laser-triggered field-emitter electron source integrated into a modified transmission electron microscope. Highly coherent electron pulses enable high resolution ultrafast electron imaging
Bach Nora, Feist Armin, Domrose Till, Danz Thomas, Möller Marcel, Rubiano da Silva Nara, Priebe Katharina, Rathje Christopher, Schafer Sascha, Ropers Claus   +9 more
doaj   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Rapid Sintering of Porous Organic Polymer Powders Into Mechanically Strong Monoliths for Efficient CO2 Capture

Advanced Functional Materials, EarlyView.
Spark plasma sintering enables rapid processing of porous organic polymer (POP) from fine powders to a freestanding and mechanically robust monolith. The sintering process retains the CO2 adsorption capacity and CO2/N2 selectivity, making the monolith more suitable as a solid sorbent for practical carbon capture applications.
Duan Li, Tianhui Shi, Sirui Ran, Lei Zeng, Chao Xu   +4 more
wiley   +1 more source

Photonic Engineering Enables All‐Passive Upconversion Imaging with Low‐Intensity Near‐Infrared Light

Advanced Functional Materials, EarlyView.
A passive upconversion imaging system enables the observation of scenes illuminated by low‐intensity incoherent near‐infrared light from 750 to 930 nm, by converting it into the visible without the use of external power. The upconverter is enabled by triplet–triplet annihilation in a bulk heterojunction, with absorption enhanced by plasmonic resonators
Rabeeya Hamid, Demeng Feng, Pournima Narayanan, Justin S. Edwards, Manchen Hu, Emma Belliveau, Minjeong Kim, Shenwei Yin, Sanket Deshpande, Chenghao Wan, Linda Pucurimay, David A. Czaplewski, Daniel N. Congreve, Mikhail A. Kats   +13 more
wiley   +1 more source

Imaging in-operando LiCoO2 nanocrystallites with Bragg coherent X-ray diffraction

Communications Chemistry
Although the LiCoO2 (LCO) cathode material has been widely used in commercial lithium ion batteries (LIB) and shows high stability, LIB’s improvements have several challenges that still need to be overcome.
David Serban, Daniel G. Porter, Ahmed H. Mokhtar, Mansoor Nellikkal, Sivaperumal Uthayakumar, Min Zhang, Stephen P. Collins, Alessandro Bombardi, Peng Li, Christoph Rau, Marcus C. Newton   +10 more
doaj   +1 more source

Impact of ultrafast electronic damage in single particle x-ray imaging experiments

, 2012
In single particle coherent x-ray diffraction imaging experiments, performed at x-ray free-electron lasers (XFELs), samples are exposed to intense x-ray pulses to obtain single-shot diffraction patterns.
E. Weckert, F. Herman, I. A. Vartanyants, J. Als-Nielsen, L. Mandel, M. M. Woolfson, N. M. Kabachnik, U. Lorenz   +7 more
core   +1 more source

GeAl2‐2xFe2xO3(OH)4 Nanotubes: New Electrocatalyst for Oxygen Evolution Reaction

Advanced Functional Materials, EarlyView.
Fe‐doped imogolite nanotubes are synthesized via a one‐step hydrothermal method with varying Fe substitution ratios x. Structural and spectroscopic analyses confirm homogeneous Fe incorporation while preserving tubular shape. Optimal doping at x = 0.05 enhances optical absorption, narrows band gap, reduces charge transfer resistance, and significantly ...
Yassine Naciri, Jian Li, Wahid Ullah, Fabien Baron, Franck Bourdelle, Stéphan Rouzière, Claire Goldmann, Erik Elkaim, Thomas Bizien, Rachid Belkhou, Delphine Vantelon, Mohamed Nawfal Ghazzal, Erwan Paineau   +12 more
wiley   +1 more source

Image Enhancement of Computational Reconstruction in Diffraction Grating Imaging Using Multiple Parallax Image Arrays

Sensors, 2020
This paper describes an image enhancement method of computational reconstruction for 3-D images with multiple parallax image arrays in diffraction grating imaging. A 3-D imaging system via a diffraction grating provides a parallax image array (PIA) which
Jae-Young Jang, Hoon Yoo
doaj   +1 more source