Results 71 to 80 of about 206,634 (222)

LED receiver impedance and its effects on LED-LED visible light communications

, 2017
This paper experimentally demonstrates that the AC impedance spectrum of the LED as a photodetector heavily depends on the received optical power, which may cause the impedance mismatch between the LED and the post trans-impedance amplifier.
Huang, Boyang, Li, Shangbin, Xu, Zhengyuan   +2 more
core   +1 more source

Simultaneous and accurate measurement of the dielectric constant at many frequencies spanning a wide range [PDF]

, 2015
We present an innovative technique which allows the simultaneous measurement of the dielectric constant of a material at many frequencies, spanning a four orders of magnitude range chosen between 10 --2 Hz and 10 4 Hz.
Antoine Naert, Caroline Crauste-Thibierge, Denis Cottinet, Ludovic Bellon, Marius Tanase, Mark J. E., Pascal Metz, Roberto Pérez-Aparicio, Sergio Ciliberto   +8 more
core   +5 more sources

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Electrochemical Evaluation and Phase-related Impedance Studies on Silicon–Few Layer Graphene (FLG) Composite Electrode Systems

Scientific Reports, 2018
Silicon-Few Layer Graphene (Si-FLG) composite electrodes are investigated using a scalable electrode manufacturing method. A comprehensive study on the electrochemical performance and the impedance response is measured using electrochemical impedance ...
Qianye Huang, Melanie J. Loveridge, Ronny Genieser, Michael J. Lain, Rohit Bhagat   +4 more
doaj   +1 more source

Effects of serum proteins on corrosion behavior of ISO 5832–9 alloy modified by titania coatings [PDF]

, 2014
Stainless steel ISO 5832–9 type is often used to perform implants which operate in protein-containing physiological environments. The interaction between proteins and surface of the implant may affect its corrosive properties.
Andrzej Leniart, B Feng, Barbara Burnat, C Liu, CC Dupont-Gillain, D Sun, D Velten, D Wang, FH Jones, G Rondelli, H Huang, JE Ellingsen, K Merrit, MLCA Afonso, P Galliano, RL Williams, S Karimi, S Karimi, S Omanovic, SH Ahn, T Kopac, Tadeusz Blaszczyk, TO Collier, YS Hedberg   +23 more
core   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Bioimpedance spectroscopy of breast phantoms

Journal of Electrical Bioimpedance
This article is devoted to the study of the possibility of detecting breast tumors, which can be used for early diagnostics of breast cancer, by the dielectric impedance spectroscopy method.
Kuzmin Andrey, Baranov Viktor
doaj   +1 more source

Four-Wire Impedance Spectroscopy on Planar Zeolite/Chromium Oxide Based Hydrocarbon Gas Sensors

Sensors, 2007
Impedometric zeolite hydrocarbon sensors with a chromium oxide intermediatelayer show a very promising behavior with respect to sensitivity and selectivity. Theunderlying physico-chemical mechanism is under investigation at the moment.
Ralf Moos, Matthias Knörr, Anne Schulz, Gunter Hagen   +3 more
doaj   +1 more source

Composite nanostructured solid-acid fuel-cell electrodes via electrospray deposition [PDF]

, 2010
Stable, porous, nanostructured composite electrodes were successfully fabricated via the inexpensive and scalable method of electrospray deposition, in which a dissolved solute is deposited onto a substrate using an electric field to drive droplet ...
Brunelli, Nicholas A., Giapis, Konstantinos P., Haile, Sossina M., Louie, Mary W., Varga, Áron   +4 more
core   +1 more source

Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution

Advanced Engineering Materials, EarlyView.
Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat, Hamidreza Enshaei, Elaine Armelin, José I. Iribarren, Antonio Mateo, Miguel Morales   +5 more
wiley   +1 more source