Results 81 to 90 of about 4,153 (244)

Robust and Thermally Stable Silicone Aerogels with Hyperconnected Network via Kinetically Optimized Hyperbranched Silane Precursors

open access: yesAdvanced Science, Volume 13, Issue 34, 19 June 2026.
Reactivity‐Programmed Assembly: A kinetic‐control strategy is reported for constructing hyperconnected silicone aerogels with a robust “thick‐neck” architecture. By exploiting the reactivity disparity of precursors, flexible segments are uniformly embedded within a rigid skeleton.
Aoqing Yan   +9 more
wiley   +1 more source

Structural characterization of humic acids, extracted from sewage sludge during composting, by thermochemolysis–gas chromatography–mass spectrometry [PDF]

open access: yes, 2006
Thermochemolysis coupled with gas chromatography and mass spectrometry were applied to determine the structure of humic acids (HA) extracted from a sewage sludge and straw mixture at different steps of composting.
Bailly, J.-R.   +16 more
core   +1 more source

Tetramethylammonium hydroxide (TMAH) as an efficient catalyst for the one-pot synthesis of 1,2-dihydro-1-aryl- naphtho[1,2-e][1,3]oxazine-3-ones under solvent-free conditions

open access: yesBulletin of the Chemical Society of Ethiopia, 2016
1,2-Dihydro-1 -arylnaphtho[1,2-e][1,3]oxazine-3-one derivatives were synthesized in high yields using an efficient and one-pot condensation of 2-naphthol, aromatic aldehydes and urea catalyzed by tetramethylammonium hydroxide (TMAH) under solvent-free ...
N. Montazeri, E. M. Nezhad
doaj   +1 more source

An Investigation into the Adsorption Characteristics of Grafted Mesoporous Silicates for the Removal of Tetramethyl Ammonium Hydroxide from Aqueous Solution

open access: yesAdsorption Science & Technology, 2002
Four cubic mesoporous silicates (CMS), one unmodified and three grafted with amine, carboxylic and cyano surface functional groups, were prepared, characterised and compared as adsorbents for tetramethyl ammonium hydroxide (TMAH) from aqueous solution ...
Brian P. Kelleher   +3 more
doaj   +1 more source

Atomic Layer Deposition in Transistors and Monolithic 3D Integration

open access: yesAdvanced Functional Materials, Volume 36, Issue 41, 21 May 2026.
Transistors are fundamental building blocks of modern electronics. This review summarizes recent progress in atomic layer deposition (ALD) for the synthesis of two‐dimensional (2D) metal oxides and transition‐metal dichalcogenides (TMDCs), with particular emphasis on their enabling role in monolithic three‐dimensional (M3D) integration for next ...
Yue Liu   +5 more
wiley   +1 more source

Tetramethylammonium hydroxide (TMAH) treatment of dry-etched trenches on (010) β-Ga2O3 to enhance trench profiles [PDF]

open access: yesAIP Advances
We demonstrated heated tetramethylammonium hydroxide (TMAH) etching (25 wt. % concentration, at 90 °C) as an effective post-dry-etch treatment for improving dry-etched trench profiles on (010) β-Ga2O3. This treatment successfully converted rough, tapered
Takayoshi Oshima
doaj   +1 more source

Curvature-Modulated Si Spherical Cap-Like Structure Fabricated by Multistep Ring Edge Etching

open access: yesMicromachines, 2020
To create approximately spherical structures with curved sidewalls, this paper presents a method for building a series of decreasing slopes along the sidewall of a circular truncated cone.
Tieying Ma, Jiachen Wang, Dabo Li
doaj   +1 more source

A novel ZnO piezoelectric microcantilever energy scavenger: Fabrication and characterization

open access: yesSensing and Bio-Sensing Research, 2016
This novel piezoelectric zinc oxide (ZnO) thin film microcantilever was fabricated by micromachining technique. To release the cantilever, wet anisotropic etching of Silicon (Si) was performed by tetramethyl ammonium hydroxide (TMAH).
Deepak Bhatia   +3 more
doaj   +1 more source

Studies on characteristic of TMAH etch

open access: yes, 2003
【中文文摘】TMAH是一种具有优良的腐蚀性能的各向异性腐蚀剂,选择性好,无毒且不污染环境,最重要的是TMAH与CMOS工艺相兼容,符合SOC的发展趋势。TMAH正逐渐替代KOH和其他腐蚀液,成为实现MEMS工艺中微三维结构的主要腐蚀剂。本文着重介绍了TMAH的特性、工艺条件及应用。 【英文文摘】Polyimide can resist high temperature and etching,and has excellent properties of in-sulation and chemical
邓俊泳, 冯勇建
core  

1/f Noise Characteristics of AlGaN/GaN FinFETs with and without TMAH surface treatment

open access: yes, 2019
In this paper, we have fabricated and investigated the AlGaN/GaN fin-shaped field-effect transistors (FinFETs) with and without TMAH surface treatment.
Sakong, S   +10 more
core   +1 more source

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