Results 91 to 100 of about 501,263 (263)

Parameter Investigation for Stamp Manufacturing of Complex 3D Geometries Using Nanoimprint Lithography

Advanced Materials Technologies, EarlyView.
Nanoimprint lithography can replicate complex 3D microstructures with undercuts using single‐layer polymer stamps of different elasticities. By combining experiments and simulations, T‐shaped geometries and suitable undercut radii were identified that minimize stress and defects during demolding.
Christos Julianos Karapatzakis, Selina Burkert, Cordelia Friederike Wittemann, Andreas Heinrich   +3 more
wiley   +1 more source

Surface Flavonoids in and

Natural Product Communications, 2008
Exudate flavonoids have been found on the green fruits of Catalpa ovata (Bignoniaceae) and Paulownia tomentosa (Scrophulariaceae) and on the leaf surfaces of Greyia sutherlandii (Melianthaceae) and Paulownia tomentosa , respectively.
Eckhard Wollenweber, Rüdiger Wehde, Matthias Christ, Marion Dörr   +3 more
doaj   +1 more source

Atmospheric Chemistry of 2-Methoxypropene and 2-Ethoxypropene: Kinetics and Mechanism Study of Reactions with Ozone

Atmosphere, 2018
Rate coefficients at ambient temperature and atmospheric pressure for the reaction of ozone with 2-methoxypropene (2-MPE) and 2-ethoxypropene (2-EPE) were determined in an evacuable 100 L Teflon reaction chamber using absolute and relative rate methods ...
Chen Lv, Lin Du, Narcisse T. Tsona, Xiaotong Jiang, Wenxing Wang   +4 more
doaj   +1 more source

Reductive Lithiation of Alkoxy-substituted Benzyl Methyl Ethers and Connection with Cross-coupling Reactions

, 2004
—2-and 4-Ethoxymethoxybenzyl methyl ethers were employied as useful starting materials for the synthesis of 1,2- or 1,4-dicarbosubstituted benzenes.
G. DETTORI, R. PIREDDU, AZZENA, Ugo Gavino, PISANO, Luisa   +3 more
core   +1 more source

Zinc Chloride–Polyethylene Oxide Gel Polymer Electrolytes for Wearable and Flexible Energy Storage Applications

Advanced Materials Technologies, EarlyView.
We investigate gel polymer electrolyte ZnCl2‐PEO as energy storage materials in flexible electrochemical capacitors, aiming to provide new insights into energy solutions for low‐powered portable electronics. ABSTRACT We prepared and evaluated the properties of hydrated ZnCl2‐Polyethylene oxide (PEO) gel polymer electrolyte (H‐GPE) for flexible ...
Jeeva Saju, Jithin Kanathedath, Sindhya Ajith, Febin Paul, Keith Sirengo, Suresh C. Pillai, Libu Manjakkal   +6 more
wiley   +1 more source

Influence of methyl ethers is on process of wear tribotechnique of interfaces [PDF]

, 2008
UK: Робота присвячена дослідженню впливу метилових ефірів на поверхневу структуру матеріалів трибоспряжень. EN: Work is devoted research of influencing of methyl ethers on the surface structure of materials of ...
Дидур, Владимир Аксентьевич, Журавель, Дмитро Павлович, Didur, Volodymyr, Журавель, Дмитрий Павлович, Юдовінський, В. Б., Дідур, Володимир Аксентійович, Zhuravel, Dmytro   +6 more
core   +1 more source

Dynamic Fluorescence Modulation via Light‐Driven Competitive Protonation

Advanced Optical Materials, EarlyView.
A two‐component molecular system demonstrates reversible, light‐driven fluorescence write–erase cycling and thermal imaging. Illumination of a merocyanine photoacid transfers a proton to a highly efficient fluorescent pyridinium dye, switching its emission color; thermal relaxation reverses the process in the dark.
Serena X. Liu, Moritz E. Kleybolte, Colin van Dyck, Sergey I. Vagin, Preeti Gahtori, Antonio Scarpati, Razieh Firouzihaji, Diogo A. Galico, Ulrich S. Schubert, Julianne Gibbs, Alkiviathes Meldrum   +10 more
wiley   +1 more source

'Extension of Ring Closing Metathesis Methodology to the Synthesis of Carbocyclic Methyl and Silyl Enol Ethers'

, 2002
Carbocyclic methyl and silyl enol ethers (TBDMS is optimum) can be synthesised regiospecifically by ring closing metathesis using the 'second generation' Grubbs ruthenium carbene catalyst in combination with molecular sieves.
Aggarwal, VK, Daly, AM
core   +1 more source

Autonomous Navigation of Pollen‐Inspired Magnetic Microrobots for Biomedical Applications

Advanced Robotics Research, EarlyView.
A sunflower pollen‐inspired magnetic microrobot enables controlled rolling navigation in vessel‐like environments. Its open geometry reduces hydrodynamic drag, while vision‐based closed‐loop control, shortest‐path planning, and reinforcement learning support target‐reaching and maze navigation with microrobot‐scale accuracy, highlighting a route toward
Ali Anil Demircali, Abdurrahim Yilmaz, Meysam Keshavarz, Jinshi Zhao, Ara Darzi, Eric Yeatman, Burak Temelkuran   +6 more
wiley   +1 more source

Synthesis and Stereostructure-Activity Relationship of Novel Pyrethroids Possessing two Asymmetric Centers on a Cyclopropane Ring

Molecules, 2019
2-Methylcyclopropane pyrethroid insecticides bearing chiral cyanohydrin esters or chiral ethers and two asymmetric centers on the cyclopropane ring, were synthesized.
Takashi Taniguchi, Yasuaki Taketomo, Mizuki Moriyama, Noritada Matsuo, Yoo Tanabe   +4 more
doaj   +1 more source