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Reconciling and validating the Ashworth-Davies Doppler shifts of an arbitrarily translating mirror.
J Opt Soc Am A Opt Image Sci Vis
August 2024
We simplify, to first order in , the generalized, special relativistic treatment of a Doppler shift from an arbitrarily translating mirror originally derived by Ashworth and Davies [Proc. IEEE64, 280 (1976)IEEPAD0018-921910.1109/PROC.
View Article and Find Full Text PDFImpact of charge distribution on the stability of ferroelectric nematic liquid crystals.
Soft Matter
January 2025
Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
This study explores the influence of charge distribution and molecular shape on the stability of ferroelectric nematic liquid crystalline phases through atomistic simulations of DIO molecules. We demonstrate the role of dipole-dipole interactions and molecular shape in achieving polar ordering by simulating charged and chargeless topologies, and analysing positional and orientational pair-distribution functions. The charged DIO molecules exhibit head-to-tail and side-by-side parallel alignments conducive to long-range polar order, whereas the chargeless molecules show no polar ordering.
View Article and Find Full Text PDFPlasmonic Slippery Surface for Surface-Enhanced Raman Spectroscopy and Protein Adsorption Inhibition.
Anal Chem
January 2025
Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal 576104, India.
Slippery liquid-infused porous surfaces (SLIPSs) are a class of surface that offers low contact angle hysteresis and low tilt angle for water droplet shedding. This property also endows the surface with pinning-free evaporation, which in turn has been exploited for analyte concentration enrichment for Surface Enhanced Raman Spectroscopic applications and antibiofouling. Herein, we demonstrate a facile approach for creating SLIPS with low contact angle hysteresis and low tilt angle for water shedding by coating the equal-volume mixture of polydimethylsiloxane (PDMS) and silicone oil.
View Article and Find Full Text PDFNovel Nonaqueous PD/PZ/NMP Absorbent for Energy-Efficient CO Capture: Insights into the Crystal-Phase Regulation Mechanism of the Powdery Product.
Environ Sci Technol
January 2025
School of Environmental Science and Engineering, Shenzhen Key Laboratory of Municipal Solid Waste Recycling Technology and Management, Southern University of Science and Technology, Shenzhen 518055, China.
Solid-liquid biphasic absorbents are a promising solution for overcoming the high-energy consumption challenge faced by liquid amine-based CO capture technologies. However, their practical applications are often hindered by difficulties in separating viscous solid-phase products. This study introduces a novel nonaqueous absorbent system (PD/PZ/NMP) composed of 4-amino-1-methylpiperidine (PD), piperazine (PZ), and -methyl-2-pyrrolidone (NMP), engineered to produce easily separable powdery products.
View Article and Find Full Text PDFTailoring of Selective Chemo-Responsiveness in Liquid Crystals via Organic Ionic Plastic Crystals.
Small
January 2025
Department of Chemical Engineering, POSTECH, Pohang, 37673, Republic of Korea.
Liquid crystals (LCs) are widely used as promising stimuli-responsive materials due to their unique combination of liquid and crystalline properties, providing the capability to sense even molecular-scale events and amplify them into macroscopic optical outputs. However, encoding a high level of selectivity to a specific intermolecular event remains a key challenge, leading to prior studies regarding chemically functionalized LC interfaces. Herein, we propose an integrative strategy to significantly advance the design of chemo-responsive LCs through a deep fundamental understanding on the orientational coupling of LCs with new functional molecules, organic ionic plastic crystals (OIs), presented at LC interfaces.
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