Results 61 to 70 of about 7,276 (219)

Combining Isotope Dilution and Standard Addition—Elemental Analysis in Complex Samples

Molecules, 2021
A new method combining isotope dilution mass spectrometry (IDMS) and standard addition has been developed to determine the mass fractions w of different elements in complex matrices: (a) silicon in aqueous tetramethylammonium hydroxide (TMAH), (b) sulfur
Christine Brauckmann, Axel Pramann, Olaf Rienitz, Alexander Schulze, Pranee Phukphatthanachai, Jochen Vogl   +5 more
doaj   +1 more source

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

Advanced Science, EarlyView.
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, Guixiang Li, Yaolan Li, Yi Luo, Bin Liu, Zhe Su, Hao Tian, Wei Shi, Bo Niu, Donghui Long   +9 more
wiley   +1 more source

Synthesis and Property of Tellurium-Containing Polymer for Extreme Ultraviolet Resist Material [PDF]

, 2017
Synthesis, physical properties, and resist properties of tellurium containing polymer with pendant adamantyl ester groups poly(Re-co-Te)-AD were examined, relevant to the application of resist material for extreme ultraviolet laser photolithography (EUVL)
Fukunaga Mari, Kozawa Takahiro, Kudo Hiroto, Yamamoto Hiroki, 工藤 宏人, 福永 真理   +5 more
core   +2 more sources

Dipole‐Manipulated Built‐In Electric Field Enables Ultrafast Charge Separation in Perylene Diimide Polymers for Photoelectrochemical Water Splitting

Advanced Science, EarlyView.
Molecular dipole engineering in dendritic perylene diimide polymers through nitrogen‐rich heterocyclic linkers amplifies the built‐in electric field, enabling sub‐picosecond charge separation and efficient multi‐electron accumulation. This structure–dynamics–performance relationship establishes a versatile design strategy for high‐performance organic ...
Ying‐Xin Qiao, Zicong Situ, Yi‐Jing Chen, Shuo‐Xiang Liu, Jing‐Lan Zhang, Xingqing Li, Luo‐Han Xie, Si‐Hang Xie, Qing‐Xiao Tong, Andong Xia, Zhuoran Kuang, Jing‐Xin Jian   +11 more
wiley   +1 more source

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

Micromachines, 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

Macromolecular organic acids in the Murchison meteorite [PDF]

, 2005
This study has detected bound organic acids within the Murchison meteorite organic macromolecule. Benzoic acid was the most abundant compound; other abundant compounds include C1 and C2 benzoic acids.
Gilmour, I., Sephton, M. A., Watson, J. S.   +2 more
core  

Trench formation and corner rounding in vertical GaN power devices [PDF]

, 2017
Trench formation and corner rounding are the key processes to demonstrate high-voltage trenchbased vertical GaN devices. In this work, we developed a damage-free corner rounding technology combining Tetramethylammonium hydroxide wet etching and piranha ...
Gao, Xiang, Hu, Jie, Liu, Zhihong, Palacios, Tomas, Piedra, Daniel, Sun, Min, Zhang, Yuhao   +6 more
core   +1 more source

Advancements in Mass Spectrometry‐Based Glycomics in Food and Nutritional Science

Mass Spectrometry Reviews, EarlyView.
ABSTRACT This review highlights advancements in mass spectrometry (MS)‐based glycomics in food and nutritional science. Carbohydrates, which are vital for human health, exhibit complex structures, making their analysis challenging. MS has become an indispensable tool for elucidating the structures of carbohydrates, including glycans, through soft ...
JaeHui Song, HyunJi Lee, Youngshik Choe, Hyeyoung Lee   +3 more
wiley   +1 more source

Wet etching of (−102) β-Ga2O3 with tetramethylammonium hydroxide (TMAH)

Science and Technology of Advanced Materials
We investigated wet etching of (−102) β-Ga2O3 substrates using heated 25 wt% tetramethylammonium hydroxide (TMAH). The (−102) plane exhibited an etching rate that was one order of magnitude higher than those of the widely used (100), (010), (001), and ...
Takayoshi Oshima
doaj   +1 more source

Chemical characterization of pitch deposits produced in the manufacturing of high-quality paper pulps from hemp fibers [PDF]

, 2000
Instituto de Recursos Naturales y Agrobiología, CSIC, P.O. Box 1052, E-41080, Seville, Spain E-mail address: delrio@irnase.csic.esThe composition of pitch deposits occurring in pulp sheets and mill circuits during soda/anthraquinone pulping and ...
Dighton, John, Garcia Zapata, Erick J., Ruess, Liliane   +2 more
core   +1 more source