Results 61 to 70 of about 45,061 (241)

Tribología de nuevas capas autolubricantes producidas mediante PVD

Revista de Metalurgia, 2005
Las capas de MoS2 depositadas mediante PVD tienen baja fricción en vacío pero se degradan con facilidad al aire, especialmente en presencia de humedad. Este trabajo describe el desarrollo de nuevas capas de MoSx modificadas con WC.
J. I. Oñate, M. Brizuela, A. García-Luis, I. Braceras, S. Pacheco, J. L. Viviente   +5 more
doaj   +1 more source

Recent Advances in Transparent Microelectrode Device Architecture and Fabrication Strategies for Biomedical Applications

Advanced Materials Technologies, EarlyView.
Transparent microelectrode arrays enable simultaneous optical and electrical electrophysiology with high spatiotemporal resolution, allowing multimodal observations of dynamic biological systems. Advances in materials and device architectures improve device performance by addressing key trade‐offs between optical transparency, impedance, and ...
Michael Abraham Listyawan, Tran Bach Dang, Chi Cong Nguyen, Yee Lap Pong, Tianruo Guo, Thanh Nho Do, Hoang‐Phuong Phan   +6 more
wiley   +1 more source

Portopulmonary hypertension practice patterns after liver transplantation

Liver Transplantation, EarlyView., 2022
Abstract Portopulmonary hypertension (POPH) is a type of pulmonary arterial hypertension occurring exclusively in those with portal hypertensive liver disease. Liver transplantation (LT) can significantly improve outcomes. Current guidelines counsel against immediate adjustments to targeted therapy after LT and suggest routine echocardiography as ...
Arun Jose, Elizabeth J. Kopras, Shimul A. Shah, Jean M. Elwing   +3 more
wiley   +1 more source

Epitaxial Stabilization and Radiation-Stimulated Segregation in CA-PVD AlN/CrN Multilayer Coatings Under Ion Bombardment

East European Journal of Physics
This paper investigates the regularities governing the formation of the atomic-crystalline architecture, surface topography, and chemical composition of AlN/CrN multilayer coatings deposited via cathodic arc physical vapor deposition onto AISI 321 ...
O.V. Maksakova, V.M. Beresnev, S.V. Lytovchenko, R.S. Galushkov   +3 more
doaj   +1 more source

PERBAIKAN DAN EVALUASI KINERJA ALGORITMA PIXEL- VALUE DIFFERENCING (PVD) [PDF]

, 2009
Pixel value differencing (PVD) merupakan salah satu algoritma dalam steganografi. Semenjak algoritma ini ditemukan pada Tahun 2001 sudah ada beberapa perbaikan dan pengembangan yang dilakukan.
Heru, T. Natalisa, Rojali, Rojali, Sugi, Guritman   +2 more
core  

Controlling Polystyrene Particle Distribution in Colloidal Lithography For Correlated‐Disorder Structures

Advanced Optical Materials, EarlyView.
Colloidal lithography is a low‐cost, simple and scalable technique to fabricate correlated‐disorder nanostructures for light‐trapping in solar cells. This work investigates the control of polystyrene particle distribution in colloidal lithography, highlighting the importance of particle surface functionalization as well as the ability to tune the ...
Laura de Almeida, Jean‐Baptiste Doucet, Mathieu Arribat, Guilhem Almuneau, Stéphane Collin, Inès Revol   +5 more
wiley   +1 more source

Hardness and scratch response of PVD multilayer coatings [PDF]

, 2009
In the present investigation, novel Cr/CrN, CrN/CrAlN and Cr/CrN/CrAlN multilayered coatings thin films have been developed by dual RF magnetron sputtering.
LAMBERTIN, Michel, NOUVEAU, Corinne, BENLATRECHE, Yacine, MUSTAPHA, Nasri, TLILI, Brahim   +4 more
core  

Autonomous Navigation of Pollen‐Inspired Magnetic Microrobots for Biomedical Applications

Advanced Robotics Research, EarlyView.
A sunflower pollen‐inspired magnetic microrobot enables controlled rolling navigation in vessel‐like environments. Its open geometry reduces hydrodynamic drag, while vision‐based closed‐loop control, shortest‐path planning, and reinforcement learning support target‐reaching and maze navigation with microrobot‐scale accuracy, highlighting a route toward
Ali Anil Demircali, Abdurrahim Yilmaz, Meysam Keshavarz, Jinshi Zhao, Ara Darzi, Eric Yeatman, Burak Temelkuran   +6 more
wiley   +1 more source

Optimization The High Speed Machining of Hardened AISI 4140 Steel Using Vapor Deposited Cutting Tools (Wear and Roughness) [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2018
In this study, the main cutting parameters of high speed machining (HSM) including cutting speed, feed rate, depth of cut as well as deposition method were optimized using genetic algorithm considering the average surface roughness (Ra) of work piece and
Mehdi Jalali Azizpour, Ata Fardaghaie
doaj  

Computational intelligence-based steganalysis comparison for RCM-DWT and PVA-MOD methods

Automatika, 2019
This research article proposes data hiding technique for improving the data hiding procedure and securing the data transmission with the help of contrast mapping technique along with advanced data encryption standard.
T. D. Sairam, K. Boopathybagan
doaj   +1 more source