Results 231 to 240 of about 974,722 (302)

Self‐Powered Broadband High‐Responsivity Photodetectors: p‐(CuS)x(ZnSe)1−x/p‐Si Isotype Heterojunction

Small, EarlyView.
This study reports a self‐powered broadband photodetector based on compositionally tuned p‐(CuS)x(ZnSe)1−x/p‐Si isotype heterojunctions. Increasing the CuS ratio improved the film crystallinity and produced a denser, more homogeneous nanopillar morphology, enhancing light absorption.
Ali Olkun
wiley   +1 more source

Interlayer‐Catalyst Method for Metal‐Assisted Chemical Etching of Ultra‐High Aspect Ratio Silicon Nanostructures

Small Methods, EarlyView.
An advanced patterning method is presented for metal‐assisted chemical etching. The interlayer replaces the resist and enables catalyst deposition on a clean interface. The prepared samples show improved performance with a more reproducible etching profile, higher aspect ratio, and increased consistency over a larger area.
Bryan Peter Jost Benz, Marco Stampanoni, Lucia Romano   +2 more
wiley   +1 more source

Engineering Nanoscale Frontiers: Valve Metal Oxide Nanostructures From Fundamentals to Multifunctional Biomedical Applications

The Chemical Record, EarlyView.
Valve metal oxide nanostructures such as TiO2, Ta2O5, Nb2O5, ZrO2, and HfO2 are emerging as versatile biomedical platforms due to their tunable surface properties, exceptional stability, and inherent biocompatibility. This review highlights their synthesis, physicochemical properties, and biological interactions, addressing their roles in advanced ...
Nina Kummer, Désirée Gül, İdris Sargin, Mustafa Dolaz, Dzmitry Shcharbin, Shirley K. Knauer, Burcu Önal Acet, Emrah Dikici, Mingyuan Gao, Mehmet Odabaşı, Ömür Acet, Roland H. Stauber   +11 more
wiley   +1 more source

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Electric‐Driven Rotation of Silicon Nanowires and Silicon Nanowire Motors

Advanced Functional Materials, 2014
In this work, the first highly controllable assembly and rotation of silicon nanowires and nanomotors in suspension are reported. Si and Si composite nanowires are fabricated with precisely controlled dimensions via colloidal assisted catalytic etching. The nanowires can be rotated with deterministic speed and chirality.
Xiaobin Xu, Chao Liu, Kwanoh Kim, D. Fan
semanticscholar   +2 more sources

Preparation of high-purity straight silicon nanowires by molten salt electrolysis

Journal of Energy Chemistry, 2020
Silicon nanowires of high purity and regular morphology are of prime importance to ensure high specific capacities of lithium-ion batteries and reproducible electrode assembly process.
Jie Zhang, Sheng Fang, Xiaopeng Qi, Zhanglong Yu, Zhao-hui Wu, Juanyu Yang, Shi-gang Lu   +6 more
semanticscholar   +1 more source

Porous Doped Silicon Nanowires for Lithium Ion Battery Anode with Long Cycle Life

Nano Letters, 2012
Mingyuan Ge, Chongwu Zhou, Jiepeng Rong   +2 more
exaly   +2 more sources

Nanowire Lithography on Silicon

Nano Letters, 2008
Nanowire lithography (NWL) uses nanowires (NWs), grown and assembled by chemical methods, as etch masks to transfer their one-dimensional morphology to an underlying substrate. Here, we show that SiO2 NWs are a simple and compatible system to implement NWL on crystalline silicon and fabricate a wide range of architectures and devices.
Alan, Colli, Andrea, Fasoli, Simone, Pisana, Yongqing, Fu, Paul, Beecher, William I, Milne, Andrea C, Ferrari   +6 more
openaire   +2 more sources

Multicolored Vertical Silicon Nanowires

Nano Letters, 2011
We demonstrate that vertical silicon nanowires take on a surprising variety of colors covering the entire visible spectrum, in marked contrast to the gray color of bulk silicon. This effect is readily observable by bright-field microscopy, or even to the naked eye.
Seo, Kwanyong, Wober, Munib, Steinvurzel, Paul, Schonbrun, Ethan, Dan, Yaping, Ellenbogen, Tal, Crozier, Kenneth B.   +6 more
openaire   +3 more sources

Silicon Nanowire Esaki Diodes

Nano Letters, 2012
We report on the fabrication and characterization of silicon nanowire tunnel diodes. The silicon nanowires were grown on p-type Si substrates using Au-catalyzed vapor-liquid-solid growth and in situ n-type doping. Electrical measurements reveal Esaki diode characteristics with peak current densities of 3.6 kA/cm(2), peak-to-valley current ratios of up ...
Schmid H, Bessire C, Björk MT, Schenk A, Riel H   +4 more
openaire   +3 more sources

Sawtooth Faceting in Silicon Nanowires

Physical Review Letters, 2005
We observe in situ the vapor-liquid-solid (VLS) growth of Si nanowires, in UHV-CVD using Au catalyst. The nanowire sidewalls exhibit periodic sawtooth faceting, reflecting an oscillatory growth process. We interpret the facet alternation as resulting from the interplay of the geometry and surface energies of the wire and liquid droplet.
F M, Ross, J, Tersoff, M C, Reuter
openaire   +2 more sources