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Single-walled carbon nanotubes are readily observable in a scanning electron microscope, which traditional models fail to explain. We present an ab initio model to explain how the electron beam can interact with these structures despite the ...
现代催化研究方法高级讲习班由从事催化工作50余年，担任催化协会秘书长15余年的辛勤教授发起，以研究生、高等院校青年教师、企业和科研院所相关技术人员为主要对象，着重讲解当前催化研究涉及的主要现代物理方法基本原理、应用实例和存在的问题。近几年来，先后在中国科学院大连化学物理研究所（2007）、浙江师范大学（2...
(adsbygoogle = window.adsbygoogle || []).push({}); 本实用新型公开了一种激光雕刻机的运动机构，包括主动运动机构，从动运动机构，激光头运动机构，第一方向导轨，第二方向运动导轨和支撑框架，第一方向运动导轨为两条，分别固定在支撑框架相对平行的两边框上，主动运动机构和从动运动机构分别设置在一条第一方向...
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Different levels of theoretical methods have been used to study a novel stable cyleophane 1,8- [1,8-naphthalenediylbis(4'.4-biphenyldivl)] naphthalene. It was concluded that HF/3-21g* was the most efficient method for the system, which could...
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Using first-principles density functional calculations, we investigated work functions (WFs) of thin double-walled nanotubes (DWNTs) with outertube diameters ranging from 1 to 1.5 nm. The results indicate that a work function change within t...
First-principles study of the structural, energetic and electronic properties of C20-carbon nanobuds
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The structural, energetic and electronic properties of carbon nanobuds (CNBs) with the smallest fullerene C20 covalently attached to the sidewall of single-walled carbon nanotubes (SWNTs) are studied by first-principles calculations. Due to ...
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本实用新型公开了一种可升降加热器，包括传送杆，载物台，加热器和丝杠，加热器和丝杠的顶部固定连接，加热器的顶部设置有斜槽和深槽，载物台用于承载样品，载物台的底部设置有弹性定位销，侧面设置有一对侧面定位销，加热器与载物台是通过弹性定位销与斜槽和...
(adsbygoogle = window.adsbygoogle || []).push({}); Atomic layer deposition (ALD) technology is a self-limiting ultrathin film deposition method. In ALD reactions, the reaction temperature plays a key role. And generalized predictive control (GPC) algorithm is adopted to control the temperatur...
(adsbygoogle = window.adsbygoogle || []).push({}); Probe-based memory devices using ferroelectric media have the potential to achieve ultrahigh data-storage densities under high write-read speeds. However, the high-speed scanning operations over a device lifetime of 5-10 years, which correspo...
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1.原子层沉积工艺
原子层沉积技术（atomic layer deposition, ALD）已经逐渐成为了一项沉积功能薄膜的重要技术。该技术可以在纳米级尺度上精确控制物质成分和形貌，它可以将被沉积物质以单原子膜的形式一层一层的镀在基底表面。原子层沉积的过程是通过...