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B@LGTs of Nd, Eu, Er, and Yb lanthanides with physicochemical interfacing for enhanced photocatalytic reduction of fluorescent dyes, transition metal ions, and quinonoid phenolphthalein.
RSC Adv
February 2025
School of Chemical Sciences, Central University of Gujarat Gandhinagar Sector-30 (382030) India
In this work, lanthanide sulphide nanorods (LSNRs) of neodymium (NdS), europium (EuS), erbium (ErS), and ytterbium (YbS) were prepared with a LnCl·6HO salt, sodium metal, and HS gas through a crash reaction methodology (CRM) at NTP. The LSNRs were doped with gadolinium ions (Gd) and coated with graphene oxide (GO) to prepare bimetallic LSNRs (B@LSNRs) and GO templates (B@LGTs), respectively. LSNRs, B@LSNRs, and B@LGTs were characterised using XRD, FT-IR spectroscopy, BET analysis, UV/vis spectroscopy, HR-TEM, SEM, TGA/DTG, XPS, Raman spectroscopy, and elemental analysis.
View Article and Find Full Text PDFMeasurement of Airborne Ultrasound Focus on Skin Surface Using Thermal Imaging.
IEEE Trans Haptics
February 2025
In recent years, tactile presentation technology using airborne ultrasound has attracted attention. To achieve an ideal tactile presentation using ultrasound, the acoustic field on the user's skin surface must be determined, particularly the location of the focal point. Previous studies have suggested that thermal images can be used to immediately visualize sound pressure patterns on finger surfaces.
View Article and Find Full Text PDFAn isogeometric modeling and vibro-acoustic characteristics analysis of a double panel-acoustic cavity coupling system with in-plane functionally graded materials.
Sci Rep
February 2025
School of Mechanical Engineering, Guizhou University, Guiyang, 550025, People's Republic of China.
This study introduces vibro-acoustic modeling for a double panel-acoustic cavity coupling system with in-plane functionally graded materials (FGMs). Based on the excellent ability of isogeometric analysis (IGA) to conduct high-precision engineering analysis and model complex geometric shapes, the IGA is adopted to model an acoustic structure coupling system that combines rectangular or elliptical panels with acoustic cavities. By applying the mixture rule, functionally graded panels are endowed with effective material properties that demonstrate functional variation along the in-plane direction.
View Article and Find Full Text PDFPhonoangiographic Diagnosis of Stenosed Arteries: A Computational Fluid Flexible-Structure Acoustic Interaction Study.
Int J Numer Method Biomed Eng
February 2025
Department of Mechanical Engineering, Indian Institute of Technology Bombay, Mumbai, India.
The present article is on pulsatile hemodynamics-induced sound-based diagnosis of stenosis in compliant arteries of three types: Coronary, carotid, and femoral. Considering axisymmetric stenosis in straight arteries along with clinically observed dimensions of the arteries and enveloping tissue, the present numerical study considers blood as a Newtonian fluid and both artery and tissue as isotropic and geometrically nonlinear (materialistically linear) solid. For the physiological fluid flexible-structure acoustic interaction (FfSAI) study, an in-house multiphysics solver is used for a parametric study-using various stenosis level (60%, 70%, and 80%) and stenosis length (2D and 4D); for each of the arteries.
View Article and Find Full Text PDFInvestigation of anisotropy in the collective dynamics and thermal diffusivity in the phenyl pyrimidine liquid crystal.
Phys Rev E
January 2025
Institute of Science Tokyo, School of Materials and Chemical Technology, Meguro-ku, Tokyo 152-8550, Japan and Research Center for Autonomous Systems Materialogy (ASMat), Institute of Integrated Research (IIR), (Science Tokyo), Yokohama 226-8501, Japan.
Liquid crystals (LCs) are unique heat transfer media that exhibit large anisotropy in thermal properties depending on the direction of the director (n) of the LC state. This phenomenon is the basis of thermal conduction in ordered soft materials, and has been extensively studied to understand thermal conduction in soft materials. In this study, we used inelastic x-ray scattering (IXS) to investigate the anisotropic thermal diffusivity and collective dynamics in the terahertz region of a pyrimidine-type LC (PYP8O8).
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