نتایج جستجو برای: Bilayer beam

تعداد نتایج: 130252  

C. Zhang Z. Zhang,

This paper analyzes the effects of structures and loads on the static bending and free vibration problems of bilayer beams. Based on static mechanical equilibrium and energy equilibrium, the static and dynamic governing equations of bilayer beam are established. It is found that the value of the thickness ratio has a significant effect on the static and dynamic responses of the beam, and the st...

2014
Jean Anne Saima Siddiqui Sungmin Ahn Larysa Tryputen Geoffrey S. D. Beach Marc A. Baldo Jean Anne Currivan Caroline A. Ross

A method of patterning magnetic metallic thin films is presented using a bilayer polymethyl methacrylate and hydrogen silsesquioxane electron beam lithography resist mask combined with ion beam etching. The bilayer resist process allows for the combination of a high-resolution resist mask with easy postprocess removal of the mask without damage to the magnetic quality of the film. Co60Fe20B20 a...

2008
Haifang Yang Aizi Jin Qiang Luo Junjie Li Changzhi Gu Zheng Cui

A HSQ/PMMA bilayer resist system, in which HSQ as negative tone electron beam resist top layer and PMMA as bottom layer, has been investigated for negative tone lift-off process. Patterns are first defined on the HSQ resist using electron beam lithography, and then transferred into the bottom PMMA layer using oxygen reactive ion etching. Electron beam exposure of HSQ on top of PMMA layer has be...

Journal: :Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 1991

Journal: :Crystals 2022

The aim of this experimental work was to investigate the influence ion beam charge state on damage production in nanomaterials. To achieve this, we employed Raman spectroscopy, atomic force microscopy, and transmission electron microscopy nanomaterials irradiated by a 23 MeV I beam. We found significant monolayer graphene, but no evidence effect bilayer trilayer nor graphite. Furthermore, CaF2 ...

Journal: :Physical review letters 2013
T Nandi K Haris Hala Gurjeet Singh Pankaj Kumar Rajesh Kumar S K Saini S A Khan Akhil Jhingan P Verma A Tauheed D Mehta H G Berry

We have measured the stopping powers and straggling of fast, highly ionized atoms passing through thin bilayer targets made up of metals and insulators. We were surprised to find that the energy losses as well as the straggling depend on the ordering of the target and have small but significantly different values on bilayer reversal. We ascribe this newly found difference in energy loss to the ...

2005
J. A. Adams A. Bostwick T. Ohta Fumio S. Ohuchi Marjorie A. Olmstead

This paper presents a new, stable, unreconstructed surface termination of silicon, Si(111):AlSe. The structure forms the interface layer when aluminum sesquiselenide (Al2Se3) is deposited on Si(111) by molecular beam epitaxy. The atomic structure of the interface layer was investigated using angle-resolved valence and core-level photoelectron spectroscopy and diffraction. The Al2Se3/Si(111) int...

2017
Ime J. Umoh Zakaria Moktadir Tom J. Kazmierski Hiroshi Mizuta

This paper investigates the behaviour of a defective single-gate bilayer graphene transistor. Point defects were introduced into pristine graphene crystal structure using a tightly focused helium ion beam. The transfer characteristics of the exposed transistors were measured ex-situ for different defect concentrations. The channel peak resistance increased with increasing defect concentration w...

Journal: :ACS nano 2016
Guang Bian Zhengfei Wang Xiao-Xiong Wang Caizhi Xu SuYang Xu Thomas Miller M Zahid Hasan Feng Liu Tai-Chang Chiang

We report on the fabrication of a two-dimensional topological insulator Bi(111) bilayer on Sb nanofilms via a sequential molecular beam epitaxy growth technique. Our angle-resolved photoemission measurements demonstrate the evolution of the electronic band structure of the heterostructure as a function of the film thickness and reveal the existence of a two-dimensional spinful massless electron...

2018
Deokman Kim Yunsang Kwak Junhong Park

The dynamic properties of inkjet-printed Ag thin films on flexible substrates were measured using flexural wave propagation. The Ag nanoparticle suspension was inkjet-printed on polyimide (PI), silicon wafer, and glass. The effects of flexible substrates on the dynamic properties of the films were investigated. Beam-shaped Ag-printed substrates were fabricated by pico-second laser pulse cutting...

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