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Temperature-responsive properties of surface-attached poly(N-isopropylacrylamide) (PNIPAM) network films with well-controlled chemistry are investigated. The synthesis consists of cross-linking and grafting preformed ene-reactive polymer…

Materials Science · Physics 2016-04-13 Mengxing Li , Bruno Bresson , F Cousin , Christian Fretigny , Yvette Tran

The surface of metal nanoparticles can support plasmonic excitations. These excitations dramatically amplify the electric field of incident light (by several orders of magnitude), potentially ionizing the irradiated nanoparticles in a…

Optics · Physics 2025-04-08 Dmitri E. Kharzeev , Jacob Levitt , Carlos Trallero-Herrero

By sequential feeding of catalyst materials, it is revealed that the active growth sites are at the bottom of the carbon nanotubes (CNTs), and that catalyst particles are constantly encapsulated into nanotubes from the bottom. This gives a…

Materials Science · Physics 2007-07-19 Rong Xiang , Guohua Luo , Weizhong Qian , Qiang Zhang , Yao Wang , Fei Wei , Qi Li , Anyuan Cao

The physical mechanisms of periodic separation and relaxation of electric charges within aerosol particles possessing the properties the short-circuited batteries can be extremely diverse. With use of appropriate materials and dispersing…

General Physics · Physics 2012-04-16 Oleg Meshcheryakov

A beam of free alkali metal nanoparticles is produced by a condensation source, passed through a thermalizing tube adjustable over a broad temperature range, and ionized by tunable light. High stability of the particle flux and an automated…

Mesoscale and Nanoscale Physics · Physics 2026-02-18 Atef A. Sheekhoon , Abdelrahman O. Haridy , Sebastian Pedalino , Vitaly V. Kresin

We use a coarse-grained molecular dynamics simulation to investigate the interaction between neutral or charged nanoparticles (NPs) and a vesicle consisting of neutral and negatively charged lipids. We focus on the interaction strengths of…

Soft Condensed Matter · Physics 2019-07-25 Naofumi Shimokawa , Hiroaki Ito , Yuji Higuchi

Nanoporous membranes have gained considerable interest in drug delivery1, ion transportation2, micro/nanofluidics3, molecular sensing4, and separation science5. Artificial kidneys, also known as dialyzers, reject pathogens and other…

Medical Physics · Physics 2023-10-30 Momena Monwar , Gerra Licup , M. Rashed Khan

Poly(N-isopropylacrylamide), PNIPAM, is a widely studied polymer, which serves as a key constituent of nanostructured soft materials with responsive properties. Upon increasing temperature the PNIPAM polymer chain undergoes a reversible…

Soft Condensed Matter · Physics 2019-10-22 Letizia Tavagnacco , Emanuela Zaccarelli , Ester Chiessi

Being a source of clean and renewable energy, the possibility to convert solar radiation in electric current with high efficiency is one of the most important topics of modern scientific research. Currently the exploitation of interaction…

Materials Science · Physics 2013-06-11 Marco Govoni , Ivan Marri , Stefano Ossicini

Particles that can be trapped in optical tweezers range from tens of microns down to tens of nanometres in size. Interestingly, this size range includes large macromolecules. We show experimentally, in agreement with theoretical…

Optics · Physics 2007-05-23 W. Singer , T. A. Nieminen , N. R. Heckenberg , H. Rubinsztein-Dunlop

We employ a novel Monte Carlo simulation scheme to elucidate the stabilization of neutral colloidal microspheres by means of highly-charged nanoparticles [V. Tohver et al., Proc. Natl. Acad. Sci. U.S.A. 98, 8950 (2001)]. In accordance with…

Soft Condensed Matter · Physics 2009-11-10 Jiwen Liu , Erik Luijten

Optical activity is a fundamental phenomenon originating from the chiral nature of crystals and molecules. While intrinsic chiroptical responses of ordinary chiral materials to circularly polarized light are relatively weak, they can be…

As the extremely-sized nanocrystals and nanopores, an adatom M and atomic vacancy V exhibit extraordinary capability of catalysis with however little knowledge about the catalyst-reactant interfacial bonding dynamics. With the aid of DFT…

Materials Science · Physics 2024-12-18 Sanmei Wang , Yong Zhou , Chunyang Ne , Hengxin Fang , Biao Wang , Chang Q Sun

Machine-learned interatomic potentials (MLIPs) have rapidly progressed in accuracy, speed, and data efficiency in recent years. However, training robust MLIPs in multicomponent systems still remains a challenge. In this work, we train a…

Memristive circuit elements constitute a cornerstone for novel electronic applications, such as neuromorphic computing, called to revolutionize information technologies. By definition, memristors are sensitive to the history of electrical…

Nanocarbons are an important class of energy materials and one relevant application is for the nitrogen reduction reaction, i.e., the direct synthesis of NH3 from N2 and H2O via photo- and electrocatalytic approaches. Ammonia is also a…

Materials Science · Physics 2022-05-12 Gabriele Centi , Siglinda Perathoner

The technology problems of fabricating different, nanometers sized gold particles in the layered composites like light-sensitive chalcogenide glass/gold nanoparticles/transparent substrate or titanium/titanium oxide/gold nanoparticles were…

Materials Science · Physics 2014-01-10 Sandor Kokenyesi , Sandor Biri , Csaba Hegedus , Stepan Charnovich , Attila Csik

Stimuli-responsive lyogels are considered to be smart materials due to their capability of undergoing significant macroscopic changes in response to external triggers. Due to their versatile and unique properties, smart lyogels exhibit…

Soft Condensed Matter · Physics 2024-08-21 Kathrin Marina Eckert , Simon Müller , Gerrit A. Luinstra , Irina Smirnova

Electrostatic interactions provide a convenient way to modulate interactions between nanoparticles, colloids, and biomolecules because they can be adjusted by the solution pH or salt concentration. While the presence of salt provides an…

Soft Condensed Matter · Physics 2019-09-04 Sawyer S. Hopkins , Amitabha Chakrabarti , Jeremy D. Schmit

A different paradigm is proposed to selectively manipulate and transport small engineered chiral particles and discriminate different enantiomers using unstructured chiral light. It is theoretically shown that the response of a chiral…

Optics · Physics 2022-01-03 David E. Fernandes , Mário G. Silveirinha
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