Results 131 to 140 of about 4,818,117 (298)

Physical Chemistry of Wet Chemical Anisotropic Etching of Silicon

Dynamic Systems and Control: Volume 2 — Haptic Interfaces for Virtual Environment and Teleoperator Systems; Applications of Intelligent Techniques; Sensors and Identification; Automotive and Agricultural Applications of Fluid Power; Adaptive Control Experiments in Emerging Technologies; Micromechanical Systems; Automatic Control Laboratory Experiments for Graduate Engineering Education, 1995
Abstract In this paper we explain a view to understand the anisotropy of the etching of silicon in certain wet chemical agents (such as KOH). The starting point is the assumption that the <111> face of silicon is a flat face, the etch rate of which is then governed by a nucleation barrier.
openaire   +3 more sources

Programmable Functional Silicification of DNA Origami Nanostructures

Advanced Materials, EarlyView.
This work introduces additional functionality into silica‐coated DNA origami nanostructures using non‐standard silica precursors. A fluorescent precursor enables enhanced intracellular tracking, while a disulfide‐containing reagent yields redox‐responsive, degradable silica coatings.
Anna V. Baptist, Lasse Guericke, Philipp Mauker, Oliver Thorn‐Seshold, Amelie Heuer‐Jungemann   +4 more
wiley   +1 more source

A study on the wet etching behavior of AZO(ZnO:Al) transparent conducting film [PDF]

, 2012
[[abstract]]This paper studies the wet etching behavior of AZO (ZnO:Al) transparent conducting film with tetramethylammonium hydroxide (TMAH). The optimum optoelectronic film is prepared first using designated RF power, film thickness and controlled ...
Lin, Yi- Cheng ; Jian, Y. C. ; Jiang, J. H.
core  

Confinement‐Induced Donnan Potential Enables Sealed Hydrovoltaic Power From Microliter Water

Advanced Materials, EarlyView.
An ultrathin MXene/cellulose nanofiber (CNF) nanochannel‐based hydrovoltaic generator produces sustained direct current (DC) from a single microliter droplet under sealed operation. Asymmetric nanochannel confinement establishes a persistent ion gradient and a confinement‐induced Donnan potential, harvesting the interfacial free energy released upon ...
Sangyun Na, Geonyoung Jung, Yoojin Chang, Yun Goo Ro, Cheolhong Park, Jeonghee Yeom, Jinyoung Kim, Jeeyoon Kim, Hyejin Lee, Hyeji Oh, Hyunhyub Ko   +10 more
wiley   +1 more source

Characterization of Thick GaN Films Directly Grown on Wet-Etching Patterned Sapphire by HVPE [PDF]

, 2009
Thick GaN films of high quality are directly grown on wet-etching patterned sapphire in a vertical hydride vapour phase epitaxy reactor. The optical and structural properties of GaN films are studied using scanning electronic microscopy and ...
Lu TC, Zeng YP, Huo ZQ, Wei TB, Hu Q, ypzeng@red.semi.ac.cn, Duan RF, Yang JK, Hu Q Sichuan Univ Minist Educ Dept Phys Chengdu 610064 Peoples R China. E-mail Address: lutiecheng@scu.edu.cn   +8 more
core  

Polyphenol‐Inspired Materials for Agricultural Applications

Advanced Materials, EarlyView.
This review outlines the use of polyphenol‐inspired materials for sustainable agriculture, highlighting their molecular design, interfacial assembly, structure–property relationships, and prospects toward precision agriculture, climate resilience, ecosystem protection, and circular bioeconomy strategies.
Haofu Liu, Omid Mazaheri, Zhixing Lin, Tianzheng Wang, Jingqu Chen, Yuang Gu, Xia Liang, Deli Chen, Frank Caruso   +8 more
wiley   +1 more source

Metalorganic Chemical Vapor Deposition of AlN on High Degree Roughness Vertical Surfaces for MEMS Fabrication

Advanced Electronic Materials
Aluminum nitride (AlN) grown on vertical surfaces can be utilized for the fabrication of advanced piezoelectric microelectromechanical systems (MEMS). The in‐plane motion of the parts of a MEMS element is possible when AlN is deposited on the vertical ...
Kristina Bespalova, Glenn Ross, Sami Suihkonen, Mervi Paulasto‐Kröckel   +3 more
doaj   +1 more source

Elastomeric 3D‐Printed Microenvironments Enable Nanonewton Force Measurements in Healthy and Diseased Human Pluripotent Stem Cell‐Derived Neuroepithelial Cells

Advanced Materials, EarlyView.
We present elastomeric three‐dimensional (3D) microstructures fabricated via two‐photon polymerization (2PP) and post‐processed through wet etching, for quantifying nanonewton (nN)‐scale forces applied by healthy and diseased neural cells. The mechanically characterized free‐standing beam architectures enable measurement of traction forces of ...
Pieter F. J. van Altena, Lucia Castillo Ransanz, Ruben H. Guis, Giulia Bergamaschi, Nanne J. Paauw, Urs Staufer, Vivi M. Heine, Angelo Accardo   +7 more
wiley   +1 more source

Low power 2 x 2 thermo-optic SOI waveguide switch fabricated by anisotropy chemical etching [PDF]

, 2004
A 2 x 2 thermo-optic (TO) Mach-Zehnder (MZ) switch based on silicon waveguides with large cross section was designed and fabricated on silicon-on-insulator (SOI) wafer.
Xia, JS, Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Hai Dian,POB 912, Beijing 100083, Peoples R China. 电子邮箱地址: jsxia@red.semi.ac.cn, Wang ZT, Xia JS, Fan ZC, Chen SW, Yu JZ   +5 more
core  

Metal-Assisted Etching of p-Type Silicon Using Patterned Platinum and Silver Films in Single Layers and Bimetal Double Layers

Electrochemistry
Metal-assisted etching (metal-assisted chemical etching) is a promising wet process for silicon (Si) microfabrication. The etching behavior depends on the catalyst metal, but detailed differences are not fully understood.
Ayumu MATSUMOTO, Takuma NAKAYAMA, Shinji YAE   +2 more
doaj   +1 more source