【摘 要】
：
The influence of technique parameters on the temperature coefficient of resistance (TCR) of reduced graphene oxide (RGO) films is studied. These technique parameters include the ultrasonic time, solution concentration, and heat treatment temperature. Resu
【出 处】
：
ChineseOpticsLetters
论文部分内容阅读
The influence of technique parameters on the temperature coefficient of resistance (TCR) of reduced graphene oxide (RGO) films is studied. These technique parameters include the ultrasonic time, solution concentration, and heat treatment temperature. Results show that, the best technique parameters are ultrasonic time of 14 h, solution of 0.12 ml, and annealing temperature of 800 oC, and on this point, TCR value of RGO is from -0.67% to -1.36% at the different film thicknesses.
其他文献
Conventional line-of-sight underwater wireless optical communication (UWOC) links suffer from huge signal fading in the presence of oceanic turbulence due to misalignment, which is caused by variations in the refractive index in the water. Non-line-of-sig
脉冲光孤子相互作用的动力学行为在超快脉冲激光和光孤子通讯等领域有着重要的研究价值和应用前景。锁模光纤激光器作为产生、观测及操控超快孤子脉冲的优秀非线性平台,推动了孤子动力学领域的快速发展。利用基于光子晶体光纤中高频声光效应的被动锁模光纤激光器,研究了大量光孤子的复杂相互作用。光纤激光器腔内的高频声光相互作用产生的相对稳定的光机晶格将激光器分割成了数百个相互独立的势阱,每个势阱可束缚非稳态的多个光孤子,形成了一种宏观(光机晶格)稳定,局部(每个势阱内)存在剧烈脉冲间相互作用的亚稳态工作状态。在实验中,对激光
针对交通标志出现互连现象导致检测率下降的问题,提出了一种基于曲率尺度空间(CSS)角点检测的交通标志分离算法。使用基于红绿蓝(RGB)归一化的彩色分割算法和区域特征判决准则自动识别多标志互连候选区域,并对提取的目标区域进行边缘平滑和轮廓跟踪。利用基于全局和局部曲率特性的CSS角点检测器对提取的轮廓进行角点检测,并依据角点凸凹性判定准则及分离点对匹配条件,从角点中提取标志间的分离点对。利用Brese
Two-dimensional materials are generating great interest due to their unique electrical and optical properties. In particular, transition metal dichalcogenides such as molybdenum disulfide (
针对光刻用准分子激光器的激励技术，利用拉普拉斯变换方程对脉冲变压器高压充电过程进行了分析，验证了桐合系数于与压缩高压无电时间的重要作用。捐合系数越接近于1 ，高压无电时间越短。介绍了充电电路与磁开关结合后完成快放电的过程，并提出了一种控制谐振充电的方法。实现了对高压电容50μs 内的快充电。
Lens-less Fourier-transform holography has been actively studied because of its simple optical structure and its single-shot recording. However, a low-contrast interferogram between the reference and object waves limits its signal to noise ratio. Here, mu
本文就碰撞锁模染料激光器腔内各元件对脉冲的影响进行了定量分析,对脉冲的形成进行了计算机模拟,得到了脉冲波形的非对称数值解,并且根据模拟结果对脉冲的形成机理进行了讨论.
This paper proposes the design and characterization of microstructure optical fiber for gas sensing applications. The aim is to detect toxic and colorless gases over a wide transmission band covering 0.80 μm to 2.00 μm wavelength. Numerical investigation
报道了一种采用新型二维材料二硒化铪可饱和吸收体的被动调Q掺铒光纤激光器。通过机械剥离法制备了二硒化铪薄片,将其作为可饱和吸收器件插入掺铒光纤激光器谐振腔内,实现了稳定的调Q脉冲激光输出。在泵浦功率为140 mW时,通过控制偏振控制器调节谐振腔内的偏振状态,获得了中心波长为1532.3 nm,3 dB谱线宽度为0.68 nm的稳定调Q脉冲输出;当泵浦功率增加到360 mW时,脉冲输出的重复频率从42.3 kHz变化到88.2 kHz,脉冲宽度从3.3 μs变化到1.8 μs。实验结果表明,在最大泵浦功