Results 121 to 130 of about 117,477 (313)

Enhancement of field emission properties in nanocrystalline diamond films upon 100 MeV silver ion irradiation [PDF]

, 2010
Enhanced field emission is observed in nanocrystalline diamond (NCD) films upon irradiation with 100 MeV Ag9+ ions in the range of fluences from 5 × 1010 to 5 × 1011 ions/cm2. Field emission characteristics monotonically changes with the ion beam fluence,
Chen, Huang-Chin; Palnitkar, Umesh; Sundaravel, Balakrishnan; Lin, I-Nan; Singh, Abhinav Pratap; Ranade, Ravi Kumar, Lin, I-Nan   +1 more
core   +1 more source

Modification of microstructural, mechanical and optical properties with carbon ion irradiation in Y2SiO5 crystals

Results in Physics
Yttrium orthosilicate Y2SiO5 crystals, a member of the silicate family, are versatile and multifunctional materials when doped with rare earth or transition metal ions. However, there have been limited investigations into the impact of ion irradiation on
Hong-Lian Song, Xiao-Fei Yu, Sen Sun, Jian He, Yu-Mei Huang   +4 more
doaj   +1 more source

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

Generation of quasi-monoenergetic protons from thin multi-ion foils by a combination of laser radiation pressure acceleration and shielded Coulomb repulsion [PDF]

, 2013
We study theoretically and numerically the acceleration of protons by a combination of laser radiation pressure acceleration and Coulomb repulsion of carbon ions in a multi-ion thin foil made of carbon and hydrogen.
He, Minqing, Wang, Jyhpung, Liu, Tung-Chang, Shao, Xi, Chen, Shih-Hung, Liu, Chuan-Sheng, Su, Jao-Jang, Eliasson, Bengt, Tripathi, Vipin   +8 more
core   +1 more source

Interaction of Ion Beam with Si-based Nanostructures [PDF]

Silicon has been the fundamental material for most semiconductor devices. As Si devices continue to scale down, there is a growing need to gain a better understanding of the characteristics of Si-based nanostructures and to develop novel fabrication ...
Xu, Xiaomo
core   +5 more sources

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

Advanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad, Aleksander Kostka, Gowtham Arivanandhan, Yujiao Li, Alan Savan, Manfred Kohl, Alfred Ludwig   +6 more
wiley   +1 more source

Swift heavy ion irradiation effects on structural, surface, and optical properties of ZnSe thin films

Next Materials
ZnSe thin films were deposited using a two-step process involving DC sputtering of Zn thereafter by CVD-based selenization, and the effects of swift heavy ion irradiation were systematically investigated using two ion species with distinct energy-loss ...
Naveenkumar K.R., Kannappan P, Thanigai Arul Kumaravelu, Chung-Li Dong, Sunil Singh Kushvaha, Ramcharan Meena, Abhishek Kumar Mishra, Asokan Kandasami   +7 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Tuning the conductivity of vanadium dioxide films on silicon by swift heavy ion irradiation

AIP Advances, 2011
We demonstrate the generation of a persistent conductivity increase in vanadium dioxide thin films grown on single crystal silicon by irradiation with 1 GeV 238U swift heavy ions at room temperature.
H. Hofsäss, P. Ehrhardt, H.-G. Gehrke, M. Brötzmann, U. Vetter, K. Zhang, J. Krauser, C. Trautmann, C. Ko, S. Ramanathan   +9 more
doaj   +1 more source