Effects of the orientation of magnetostrictive nickel strip on torsional wave transduction efficiency of cylindrical waveguides

2005 ◽  
Vol 86 (24) ◽  
pp. 244101 ◽  
Author(s):  
Seung Hyun Cho ◽  
Chan Il Park ◽  
Yoon Young Kim
Keyword(s):  
Torsional Wave ◽  
Transduction Efficiency ◽  
Cylindrical Waveguides ◽  
Nickel Strip

scholarly journals Modelling of torsional wave propagation in a two-layer anisotropic inhomogeneous media

2021 ◽  
Vol 1849 (1) ◽  
pp. 012013
Author(s):  
Tapas Ranjan Panigrahi ◽  
Sumit Kumar Vishwakarma ◽  
Dinesh Kumar Majhi
Keyword(s):  
Wave Propagation ◽  
Inhomogeneous Media ◽  
Torsional Wave

Parabolic cylindrical waveguides: revisited

Optik ◽  
2001 ◽  
Vol 112 (8) ◽  
pp. 358-362 ◽  
Author(s):  
P.K. Choudhury ◽  
Roger A. Lessard
Keyword(s):  
Cylindrical Waveguides

Capacitive micromachined ultrasonic transducers: Transmission evaluation with different membrane materials and dimensions

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sudhanshu Tripathi ◽  
Rekha Agarwal ◽  
Rashmi Vashisth ◽  
Devraj Singh
Keyword(s):  
Resonant Frequency ◽  
Material Selection ◽  
Transmission Efficiency ◽  
Ultrasonic Transducers ◽  
Transduction Efficiency ◽  
Membrane Material ◽  
Structural Examination ◽  
Membrane Materials ◽  
Capacitive Micromachined Ultrasonic Transducers ◽  
Output Pressure

Abstract Capacitive micromachined ultrasonic transducers (CMUTs) are dominant in generating and receiving acoustic signals. CMUT transmission efficiency solely depends upon the membrane material utilized. This work presents the structural examination of receiving and transmitting characteristics of CMUT with divergent membrane materials, namely Silicon (Si), Silicon Nitride ( Si 3 N 4 {\mathrm{Si}_{3}}{\text{N}_{4}} ), Indium Phosphide (InP), Zinc Oxide (ZnO), and Polysilicon (Poly-Si). The analysis includes the membrane deflection, pull-in voltage, output pressure, resonant frequency and capacitance modification with variable DC voltage. It has been found that InP gives the pull-in voltage comparable to Si in the receiving mode and have more transduction efficiency in transmitting mode. Effect of dimensions of CMUT on pull-in voltage and resonant frequency are also discussed. The major contribution lies in the analytical and estimation study of CMUT for appropriate membrane material selection meant for transmission and reception in the field of pressure sensing application.

scholarly journals Peptide-guided JC polyomavirus-like particles specifically target bladder cancer cells for gene therapy

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Wei-Hong Lai ◽  
Chiung-Yao Fang ◽  
Ming-Chieh Chou ◽  
Mien-Chun Lin ◽  
Cheng-Huang Shen ◽  
...  
Keyword(s):  
Gene Therapy ◽  
Bladder Cancer ◽  
Cancer Cells ◽  
Suicide Gene ◽  
Transduction Efficiency ◽  
Ligand Molecule ◽  
Jc Polyomavirus ◽  
Exogenous Dna ◽  
Bladder Cancer Cells

AbstractThe ultimate goal of gene delivery vectors is to establish specific and effective treatments for human diseases. We previously demonstrated that human JC polyomavirus (JCPyV) virus-like particles (VLPs) can package and deliver exogenous DNA into susceptible cells for gene expression. For tissue-specific targeting in this study, JCPyV VLPs were conjugated with a specific peptide for bladder cancer (SPB) that specifically binds to bladder cancer cells. The suicide gene thymidine kinase was packaged and delivered by SPB-conjugated VLPs (VLP-SPBs). Expression of the suicide gene was detected only in human bladder cancer cells and not in lung cancer or neuroblastoma cells susceptible to JCPyV VLP infection in vitro and in vivo, demonstrating the target specificity of VLP-SPBs. The gene transduction efficiency of VLP-SPBs was approximately 100 times greater than that of VLPs without the conjugated peptide. JCPyV VLPs can be specifically guided to target particular cell types when tagged with a ligand molecule that binds to a cell surface marker, thereby improving gene therapy.

Propagation of Electromagnetic Waves in Graphene-Wrapped Cylindrical Waveguides Filled With Magnetized Plasma

Optik ◽  
2021 ◽  
pp. 167566
Author(s):  
Muhammad Usman Shahid ◽  
Abdul Ghaffar ◽  
Majeed A.S. Alkanhal ◽  
Yasin Khan
Keyword(s):  
Electromagnetic Waves ◽  
Magnetized Plasma ◽  
Cylindrical Waveguides
Sign in / Sign up

Export Citation Format

Share Document