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An Update on Theoretical and Metrological Aspects of the Surface Hydrophobicity of Virus and Virus-Like Particles.
Adv Biol (Weinh)
October 2024
LCPME UMR 7564 Université de Lorraine - CNRS, 405 rue de Vandoeuvre, Villers-lès-Nancy, 54600, France.
Viruses are biological entities embodied in protein-based nanoparticles devoid of metabolic activity. Hence, the colloidal, interfacial, and chemical reactivity of virus particles (VPs) profoundly affects the fate of natural and artificial viruses in biotic or abiotic aqueous systems. These rely on the physical chemistry at the outer surface of VPs.
View Article and Find Full Text PDFAtomic sawtooth-like metal films for vdW-layered single-crystal growth.
Nat Commun
July 2024
Department of Energy Science, Sungkyunkwan University (SKKU), Suwon, 16419, South Korea.
Atomic sawtooth surfaces have emerged as a versatile platform for growth of single-crystal van der Waals layered materials. However, the mechanism governing the formation of single-crystal atomic sawtooth metal (copper or gold) films on hard substrates (tungsten or molybdenum) remains a puzzle. In this study, we aim to elucidate the formation mechanism of atomic sawtooth metal films during melting-solidification process.
View Article and Find Full Text PDFIon-specific ice provides a facile approach for reducing ice friction.
J Colloid Interface Sci
December 2024
State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China. Electronic address:
Hypothesis: Ice friction plays a crucial role in both basic study and practical use. Various strategies for controlling ice friction have been developed. However, one unsolved puzzle regarding ice friction is the effect of ion-ice interplay on its tribological properties.
View Article and Find Full Text PDFInterfacial Electron Beam Lithography Converts an Insulating Organic Monolayer to a Patterned Single-Layer Conductor with Puzzling Charge Transport Performance.
ACS Nano
July 2024
Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 7610001, Israel.
The direct generation of conducting paths within an insulating surface represents a conceptually unexplored approach to single-layer electrical conduction that opens vistas for exciting research and applications fundamentally different from those based on specific layered materials. Herein we report surface channels with single-layer -COOH functionality patterned on insulating -octadecyltrichlorosilane monolayers on silicon that exhibit unusual ionic-electronic conduction when equipped with ion-releasing silver electrodes. The strong dependence of charge transport in such channels on their lateral dimensions (nanosize, macro-size), the type (p, n) and resistivity (doping level) of the underlying silicon substrate, the nature of the insulating spacer layer between the conducting channel and the silicon surface, and the postpatterning chemical manipulation of channel's -COOH functionality allows designing channels with variable resistivities, ranging from that of a practical insulator to some unexpectedly low values.
View Article and Find Full Text PDFPhotomolecular effect: Visible light interaction with air-water interface.
Proc Natl Acad Sci U S A
April 2024
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139.
Although water is almost transparent to visible light, we demonstrate that the air-water interface interacts strongly with visible light via what we hypothesize as the photomolecular effect. In this effect, transverse-magnetic polarized photons cleave off water clusters from the air-water interface. We use 14 different experiments to demonstrate the existence of this effect and its dependence on the wavelength, incident angle, and polarization of visible light.
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