The Ⅲ-Ⅴ nitride material such as InN GaN has many favorable physical properties including a wide direct band-gap(0.7-3.4eV),high absorption coefficients(1
Laser Rayleigh-Brillouin scattering is an effective non-intrusive method for measurement of density,temperature and pressure in gas flows.In theory,the powe
由DNA和组蛋白构成的核小体是真核生物染色质的基本结构单位。组蛋白是生物体中最为保守的一类蛋白,从单细胞的酵母到多细胞的人类同源性保持高度一致。细胞将遗传物质稳定的
本文主要研究醌式染料的分子设计、合成及在光伏电池中的应用,具体研究内容如下:1、p型染料敏化太阳能电池(DSCs)因其较低的光电流限制了pn型电池的发展,因此设计合成新型的具有优异光电效应的p型染料是主要的解决方案。我们合成了p型醌式敏化染料QT-1。QT-1染料具有以下优点:(1)分子内形成一个大的平面体系,有利于分子内电荷传输;(2)两个氰基通过C-C单键直接连接在醌式噻吩基团上,能够稳定分子
The minimum feature size or “Critical Dimension”(CD)of memory and logic devices is steadily decreasing.Today device with feature sizes as small as 16 nm a
In scalar coherence theory,the van Cittert-Zernike theorem plays an importance role for studying the propagation processes of partially coherent fields.In t
“看渡边先生画的猫。想起了小时候,想起来童年的伙伴,想起爬过的树,想起放学画家,还想起春夏秋冬的风景。人生不可追回,迅疾如电。”
"Look at Mr. Watanabe’s cat.Remem
具备低运转温度、高比能量密度、液体燃料易封装携带、简单的构造以及安全性好等优点的直接甲醇燃料电池(DMFC),在便携式电子器具和汽车等范畴具有广泛的应用空间。决定DMFC活性、制造成本以及使用寿命的关键材料之一是甲醇电氧化催化剂。因此近年来如何在提高阳极催化剂活性的同时降低催化剂成本成为研究热点,而其中采用石墨烯作为催化剂载体更是该领域的研究重点。然而超薄石墨烯在酸性介质中不稳定,其sp2杂化平面
Four different shapes of probe tips are employed to perform scanning experiments on highly ordered pyrolytic graphite samples.I-Z curves and I-V curves for