Results 51 to 60 of about 50,856 (266)

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

Advanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey, Uwe Hübner, Albane Benardais, Xiaofei Wu, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Henrik Schneidewind, Markus A Schmidt, Virginie Nazabal, Volker Deckert, Jer‐Shing Huang, Wei Wang   +12 more
wiley   +1 more source

The effect of clustering of Si nanowires produced by the metal-assisted chemical etching method on their anti-reflecting properties

Фізика і хімія твердого тіла
Silicon nanowires are valuable for their compatibility with silicon technology and unique properties. Using metal-assisted chemical etching, we produced silicon nanowires and studied the effects of clustering, roughness, and length on wetting ...
I.I. Skrypnyk, S.I. Nichkalo, N.O. Shtangret   +2 more
doaj   +1 more source

Textured stainless steel foil as efficient rear reflector for flexible black silicon

Results in Physics, 2021
This paper reports textured SS foil as an efficient rear reflector for flexible b-Si. Wafer thinning by concentrated potassium hydroxide (KOH) solution followed by metal-assisted chemical etching (MACE) are used to fabricate the flexible b-Si with 67 μm ...
Halo Dalshad Omar, Auwal Abdulkadir, Md. Roslan Hashim, Mohd Zamir Pakhuruddin   +3 more
doaj   +1 more source

30 inch Roll-Based Production of High-Quality Graphene Films for Flexible Transparent Electrodes

, 2010
We report that 30-inch scale multiple roll-to-roll transfer and wet chemical doping considerably enhance the electrical properties of the graphene films grown on roll-type Cu substrates by chemical vapor deposition.
A Das, A Reina, AC Ferrari, AK Geim, Barbaros Özyilmaz, Byung Hee Hong, C Lee, D-H Kim, DC Elias, DR Cairns, DS Hecht, H-Z Geng, HL Cao, Hye Ri Kim, Hyeongkeun Kim, J Hass, J Wu, J-Y Lee, Jae-Sung Park, Jayakumar Balakrishnan, JD Caldwell, Jong-Hyun Ahn, JS Bunch, KS Kim, Kwang S. Kim, M Schrivera, M Sprinkle, R Yerushalmi, RR Nair, SH Ahn, Sukang Bae, Sumio Iijima, T Sekitani, Tian Lei, WW Cai, X Li, X Li, X Wang, Xiangfan Xu, Y Lee, Yi Zheng, YK Chang, Young Il Song, Young-Jin Kim, Youngbin Lee   +44 more
core   +1 more source

Raman Scattering Spectroscopy of Metal-Assisted Chemically Etched Rough Si Nanowires

ECS Transactions, 2011
We have shown that SiNWs formed on (100) Si substrates by metal-assisted chemical etching can exhibit different Raman scattering processes that are dependent on the orientation of examined NWs to the incident excitation light. The SiNWs retain the single crystal orientation and doping from the original bulk substrate and form as rough and mesoporous ...
Glynn, Colm, Lotty, Olan, McSweeney, William, Holmes, Justin D., O'Dwyer, Colm   +4 more
openaire   +2 more sources

Laser‐Based Sculpturing of Embedded Ultrathin Metal‐Oxide Nanopores for Enhanced Biomolecular Sensing

Advanced Functional Materials, EarlyView.
Controlled laser‐drilling of embedded HfO2 membranes creates three layer nanopores with Gaussian‐shaped cavities sculptured in the supporting layers. These embedded solid‐state nanopores slow DNA translocation by 12‐fold compared to SiNx pores, enabling high‐resolution, label‐free detection of short DNAs, RNAs, and proteins.
Jostine Joby, Yulia Marom, Guocong Lin, Aleksandra Baron‐Wiechec, Amit Meller   +4 more
wiley   +1 more source

Preparation of Silicon Nanowires Photocathode for Photoelectrochemical Water Splitting

Iraqi Journal of Physics, 2022
A metal-assisted chemical etching process employing p-type silicon wafers with varied etching durations is used to produce silicon nanowires. Silver nanoparticles prepared by chemical deposition are utilized as a catalyst in the formation of silicon ...
Zainab K. Ali, Mazin A. Mahdi
doaj   +1 more source

Thermally assisted ion beam etching of polytetrafluoroethylene, a new technique for high aspect ratio etching of MEMS [PDF]

, 1996
In micromechanics, the etching of high aspect ratio structures in polymers is a prime technology. Normally, oxygen-based reactive ion etching or the LIGA technique are used to achieve this goal.
Berenschot, Erwin, Burger, Gert-Jan, Elwenspoek, Miko, Gardeniers, Han, Jansen, Henri   +4 more
core   +3 more sources

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

Advanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou, Yu Mao, Mengyao Chang, Ziyun Wang, Wenke Xie, Cuizhu Ye, Shanghai Wei, Lars Thomsen, Geoffrey I. N. Waterhouse   +8 more
wiley   +1 more source