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Tight Focusing Properties of Azimuthally Polarized Pair of Vortex Beams through a Dielectric Interface
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作者 C. A. P. Janet M. Lavanya +3 位作者 K. B. Rajesh M. Udhayakumar Z. Jaroszewicz D. Velauthapillai 《中国物理快报:英文版》 SCIE CAS CSCD 2017年第7期109-113,共5页
有通过一个绝缘的接口的一双旋涡的一根方位角地极化的 Gaussian 横梁的紧张的集中性质被向量衍射理论理论上调查。为有相反的拓扑的费用的一双旋涡的事件横梁,旋涡向对方搬到,歼灭并且复苏焦点的飞机的附近,它导致许多新奇焦点的模... 有通过一个绝缘的接口的一双旋涡的一根方位角地极化的 Gaussian 横梁的紧张的集中性质被向量衍射理论理论上调查。为有相反的拓扑的费用的一双旋涡的事件横梁,旋涡向对方搬到,歼灭并且复苏焦点的飞机的附近,它导致许多新奇焦点的模式的产生。通过双旋涡横梁的紧张的集中产生的可用的焦点的结构可以在微粒子的套住,操作,并且材料处理发现应用等等。 展开更多
关键词 聚焦特性 高斯光束 介质界面 方位偏振 涡旋 矢量衍射理论 入射光束 材料加工
Tight Focusing Properties of Radially Polarized Gaussian Beams with Pair of Vortices 被引量:1
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作者 C. A. P. Janet K. B. Rajesh +2 位作者 M. Udhayakumar Z. Jaroszewicz T. V. S. Pillai 《中国物理快报:英文版》 SCIE CAS CSCD 2016年第12期73-76,共4页
有有光线的波浪前面分布的旋涡的嵌套的对的一根放射状地极化的 Gaussian 横梁的紧张的集中性质被向量衍射理论理论上调查。在焦点的区域的光紧张能被改变旋涡的地点更加改变的结果表演在一根放射状地极化的 Gaussian 横梁嵌套。到在横... 有有光线的波浪前面分布的旋涡的嵌套的对的一根放射状地极化的 Gaussian 横梁的紧张的集中性质被向量衍射理论理论上调查。在焦点的区域的光紧张能被改变旋涡的地点更加改变的结果表演在一根放射状地极化的 Gaussian 横梁嵌套。到在横向的方向的一个高度限制的焦点的点的从一个环形的焦点的模式的焦点的进化被观察,这被注意相应于在在输入飞机的光旋涡的地点的变化。产生的焦点的洞或点在合适的光线的阶段调整下面显著地沿着光轴导致焦点的移动,这也被观察。因此建议系统可以被使用为高、低的折射索引粒子构造悦耳的光陷井。 展开更多
关键词 高斯光束 聚焦特性 径向 涡旋 极化 矢量衍射理论 相位调制 低折射率
MOSFET-Iike CNFET based logic gate library for low-power application: a comparative study
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作者 P.A.Gowri Sankar K.Udhayakumar 《半导体学报:英文版》 EI CAS CSCD 2014年第7期112-124,共13页
The next generation of logic gate devices are expected to depend upon radically new technologies mainly due to the increasing difficulties and limitations of existing CMOS technology. MOSFET like CNFETs should ideally... The next generation of logic gate devices are expected to depend upon radically new technologies mainly due to the increasing difficulties and limitations of existing CMOS technology. MOSFET like CNFETs should ideally be the best devices to work with for high-performance VLSI. This paper presents results of a comprehensive comparative study of MOSFET-like carbon nanotube field effect transistors(CNFETs) technology based logic gate library for high-speed, low-power operation than conventional bulk CMOS libraries. It focuses on comparing four promising logic families namely: complementary-CMOS(C-CMOS), transmission gate(TG), complementary pass logic(CPL) and Domino logic(DL) styles are presented. Based on these logic styles, the proposed library of static and dynamic NAND-NOR logic gates, XOR, multiplexer and full adder functions are implemented efficiently and carefully analyzed with a test bench to measure propagation delay and power dissipation as a function of supply voltage. This analysis provides the right choice of logic style for low-power, high-speed applications. Proposed logic gates libraries are simulated using Synopsys HSPICE based on the standard 32 nm CNFET model. The simulation results demonstrate that, it is best to use C-CMOS logic style gates that are implemented in CNFET technology which are superior in performance compared to other logic styles, because of their low average powerdelayproduct(PDP). The analysis also demonstrates how the optimum supply voltage varies with logic styles in ultra-low power systems. The robustness of the proposed logic gate library is also compared with conventional and state-art of CMOS logic gate libraries. 展开更多
关键词 MOSFET 低功耗系统 逻辑门 门库 应用 CMOS技术 场效应晶体管 DOMINO
Effects of Continuous Steaming on Milling Characteristics of Two Indica Rice Varieties 预览
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作者 N. VENKATACHALAPATHY R. UDHAYAKUMAR 《水稻科学:英文版》 2013年第4期309-312,共4页
Parboiling improves milling characteristics of rice in a positive manner,which has been found to influence consumers demand and acceptability.A laboratory model of continuous steaming unit was fabricated and tested wi... Parboiling improves milling characteristics of rice in a positive manner,which has been found to influence consumers demand and acceptability.A laboratory model of continuous steaming unit was fabricated and tested with two indica rice varieties,fine (ADT39) and coarse (CO43) rice,at three different soaking temperatures (50,60 and 70 ℃) for 4 h and five residence times of steaming (1.0,1.5,2.0,2.5 and 3.0 min).The effects of continuous steaming on milling characteristics of rice were studied and compared with the values obtained from the control experiment (open steaming process under laboratory conditions).The favourable conditions for continuous parboiling of the fine variety ADT39 were identified as soaking at 70 ℃ for 4 h and 3.0 min residence time of steaming.These conditions showed head rice outturn of 74.0%.The favourable processing conditions for the coarse variety CO43 were found to be 4 h of soaking at 60 ℃ and steaming of 3.0 min residence time,and at these conditions the head rice outturn was 73.9%. 展开更多
关键词 籼稻品种 特性 碾磨 浸泡温度 停留时间 实验室模型 实验室条件 控制实验
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