Results 81 to 90 of about 175,497 (287)
Experimental validation of equilibria in fuel cells with dead-ended anodes [PDF]
, 2013 This paper investigates the nitrogen blanketing front during the dead-ended anode (DEA) operation of a PEM fuel cell. Surprisingly the dynamic evolution of nitrogen and water accumulation in the dead-ended anode (DEA) of a PEM fuel cell arrives to a ...
Chen, Jixin +4 more
core +1 more source
Microsphere Autolithography—A Scalable Approach for Arbitrary Patterning of Dielectric Spheres
Advanced Functional Materials, EarlyView.MicroSphere Autolithography (µSAL) enables scalable fabrication of patchy particles with customizable surface motifs. Focusing light through dielectric microspheres creates well defined, tunable patches via a conformal poly(dopamine) photoresist. Nearly arbitrary surface patterns can be achieved, with the resolution set by the index contrast between ...
Elliott D. Kunkel +3 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Fe─NC porous oxygen reduction electrocatalysts are prepared employing a 2,4,6‐Triaminopyrimidine‐based porous organic polymer, a Mg2+ Lewis acid, and a low‐temperature cation exchange protocol. Using the polymer precursor achieves high pyrolysis yields and results in atomically dispersed FeNx sites. The resulting catalysts feature hierarchical porosity
Eliot Petitdemange +11 more
wiley +1 more source
Feasibility Study on Setting up a Purification Stage in the Middle of a Cascade
Journal of Isotopes, 2017 It is necessary to set up a purification stage in the middle of cascade for removing light impurities, which are formed in the process of isotope separation.
GENG Bing-shuang1;XIE Quan-xin2
doaj +1 more source
Electrosynthesis of Bioactive Chemicals, From Ions to Pharmaceuticals
Advanced Functional Materials, EarlyView.This review discusses recent advances in electrosynthesis for biomedical and pharmaceutical applications. It covers key electrochemical materials enabling precise delivery of ions and small molecules for cellular modulation and disease treatment, alongside catalytic systems for pharmaceutical synthesis.
Gwangbin Lee +4 more
wiley +1 more source
Study of outgassing and decomposition of Space Shuttle heat protection tiles, fillers and adhesive [PDF]
A purge and trap technique which was employed to collect and separate the chemicals desorbing from the space shuttle heat protection tiles is described.
Blair, J. W. +2 more
core +1 more source
Anomalous Stiffening of a Conjugated Polymer During Electrochemical Oxidation
Advanced Functional Materials, EarlyView.The electromechanical response of a thienothiophene‐based conjugated polymer with triethylene glycol side chains is investigated. Electrochemical nanoindentation and atomic force microscopy reveal a modest and reversible increase in elastic modulus at room temperature upon electrochemical oxidation.
Judith Pons i Tarrés +17 more
wiley +1 more source
A technology of producing ultrafine powders of aluminium hydroxide sol-gel method
Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2016 An analysis of raw materials for the production of ultrafine powders of Al(OH)3 is conducted. It is established that the most affordable is the method of deposition of crystals from the supersaturated solution resulting from the processing of nickel- and
O. S. Komarov +4 more
doaj
Experimental investigation of contamination prevention techniques to cryogenic surfaces on board orbiting spacecraft [PDF]
Within the simulation limitations of on-orbit conditions, it was demonstrated that a helium purge system could be an effective method for reducing the incoming flux of contaminant species.
Froechtenigt, J. F. +3 more
core +1 more source
Multimodal Structural Color Graphics Based on Colloidal Photonic Microdome Arrays
Advanced Functional Materials, EarlyView.A hybrid photonic system combining colloidal crystals and microscale domes is designed to achieve four switchable optical states via the interplay of Bragg reflection and TIR interference. The graphics composed of the photonic microdome arrays provide tunable, angle‐sensitive structural coloration and concealed‐to‐revealed transitions, offering a ...
Jun‐Gu Kang +4 more
wiley +1 more source