Results 41 to 50 of about 41,759 (263)

Porous silicon nanowire arrays fabrication through one-step metal-assisted chemical etching

工程科学学报, 2019
One-step metal-assisted chemical etching (MACE) was used to fabricate porous silicon nanowire arrays. Also, the effects of doping level, AgNO3 concentration, and HF concentration on the morphology and structure of porous silicon nanowire were ...
HE Zu-dong, GENG Chao, QIU Jia-jia, YANG Xi, XI Feng-shuo, LI Shao-yuan, MA Wen-hui   +6 more
doaj   +1 more source

Сurrent-voltage characteristics and photoelectric properties of por-Si/Si-p/Si-n diodes with different porous layer thickness

St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2022
In this work, the current-voltage and photoelectric spectral characteristics of double heterodiodes por-Si/Si-p/Si-n and a reference diode with a p–n junction at room temperature are analyzed and compared with data on the thickness of porous silicon ...
Yan Dmitriy, Galkin Nikolay, Galkin Konstantin, Chernev Igor   +3 more
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Xe interacting with porous silicon [PDF]

Physical Chemistry Chemical Physics, 2010
Thin films of porous silicon (PS), structurally characterized by HR-SEM, were studied using xenon Temperature Programmed Desorption (TPD) as a probe of its inner pores. Geometric hindrance of the depth desorbing population and multiple wall collisions result in a unique double-peak structure of the TPD curve.
Assaf, Paldor, Gil, Toker, Yigal, Lilach, Micha, Asscher   +3 more
openaire   +2 more sources

Sensing Properties of Oxidized Nanostructured Silicon Surface on Vaporized Molecules

Sensors, 2019
Porous silicon has been intensely studied for the past several decades and its applications were found in photovoltaics, biomedicine, and sensors. An important aspect for sensing devices is their long–term stability.
Nikola Baran, Hrvoje Gebavi, Lara Mikac, Davor Ristić, Marijan Gotić, Kamran Ali Syed, Mile Ivanda   +6 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Porous silicon solar cells [PDF]

2015 IEEE 15th International Conference on Nanotechnology (IEEE-NANO), 2015
We developed a new architecture of crystalline solar cell, based on an ultrathin silicon membrane, taking advantage of the technology of porous silicon. The architecture consists of a macro-porous membrane, offering deeply textured surface, capable to efficiently capture the impinging light, absorbed it in the porous structure, and delivering the photo-
BALUCANI, Marco, KHOLOSTOV, KONSTANTIN, VARLAMAVA, VOLHA, PALMA, Fabrizio, Izzi, Massimo, SERENELLI, LUCA, Tucci, Mario   +6 more
openaire   +2 more sources

Facile Synthesis of Sponge-Like Porous Nano Carbon-Coated Silicon Anode with Tunable Pore Structure for High-Stability Lithium-Ion Batteries

Molecules, 2021
To address the challenge of the huge volume expansion of silicon anode, carbon-coated silicon has been developed as an effective design strategy due to the improved conductivity and stable electrochemical interface.
Shugui Song, Jingcang Li, Anqi Zheng, Yongqiang Yang, Kuibo Yin   +4 more
doaj   +1 more source

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

Advanced Engineering Materials, EarlyView.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari, Mohammad Hadi Sheikh‐Ansari, Avinash Borgaonkar, Mehran Dadkhah, Abdollah Saboori   +4 more
wiley   +1 more source