We report that an array of sharp conical spikes formed on the silicon surface under the cumulative ultra-short laser pulses irradiation in different ambient atmospheres. 不同气体氛围下超短激光脉冲微构造硅表面的实验表明,激光脉宽和背景气体对表面微构造的形成起着决定性作用。
The failure processes of cylindrical shells subjected to inner pressure and surface laser irradiation were simulated numerically with 3D discrete meso element method. 应用三维离散元方法模拟了充压柱壳在激光辐照下的破坏过程。
By harvesting reflected light and scattered light during CO 2 laser welding, a characteristic curve is obtained for reflecting laser absorption of metal surface in different phases of laser irradiation. 利用激光焊接中反射光和散射光的采集接收,得到金属表面在激光照射不同阶段的吸收特性曲线。
The effect of mmw inducing temperature rise of rat skin is investigated and the data of temperature variety of skin surface corresponding to the variety of irradiation time and power density is acquired. 研究毫米波辐照对大鼠皮肤的温升效应,获得了皮肤表面温度随辐照时间和功率密度变化的数据。
The crack on InSb crystal surface under laser irradiation 激光辐照InSb晶体表面产生的龟裂
The carrier concentration of surface after CO2 laser irradiation can exceed the solid solubility limit. 经过激光处理后样品表面一薄层载流子浓度超过了杂质的固溶度极限。
Grafting yields on the fibers surface is 4.2% after irradiation in this solution at an absorption dose of more than 0.1 kGy; the Interlaminar Shear Strength ( ILSS) of the composite is increased by more than 20%; 结果表明,环氧/丙酮溶液体系是碳纤维辐射接枝改性的理想溶液,在此溶液中辐射,当吸收剂量大于0.1kGy时,纤维表面的接枝率为4.2%,复合材料的ILSS提高了20%以上;
TEM Analysis of Silicon Surface Oxidation Induced by Electron Beam Irradiation TEM电子束诱导硅表面氧化的分析
The Graft Copolymerization on Polymer Surface Initiated by Plasma Irradiation 等离子体辐照的聚乙烯表面接枝交联共聚合
Analysis of SiO_2 Layer Formed on Si Surface by CO_2 Cluster Ion Beam Irradiation CO2离化团束辐照Si表面形成SiO2膜的分析
Scanning Electron Microscopic Observation on Changes of the Dentin Surface Caused by CO_2 Laser Irradiation CO2激光照射后牙本质变化的扫描电镜观察
And the hot air temperatures and initial moisture contents of wheat can also affect the drying characteristics of wheat. The effects of dehydration rate and moisture content on surface temperature under different doses of gamma irradiation were analyzed. 此外研究还发现,热风温度和初始含水率对辐照后小麦失水特性也有影响。并对不同辐照剂量下表面温度与失水速率和含水率的关系进行了分析。
Clinical study on cancer of body surface treated by YAG laser irradiation at constant temperature YAG激光恒温直射体表肿瘤的临床研究
The use of scanning strategies is being investigated to potentially achieve a more uniform temporal and spatial distribution of the laser energy, possibly leading to reduced part distortion, by scanning the beam across the sheet surface with both continuous and segmented irradiation geometries. 不同扫描路径可以在板材表面形成既连续又分离的扫描轨迹,在板材上形成不规则的时空上的激光能量分布,诱导板材内部应力分布成形三维形状。
The Neutron fluence ( E ≥ 0.1MeV) in irradiation cavity and the dose equivalent rate on outer surface of shield for irradiation cavity are calculated. Comparing the measured value with theoretical, the results are conform. 计算了辐照腔中的快中子(E≥0.1MeV)注量和辐照腔屏蔽外表面处的当量剂量率,理论计算与实测值比较表明,二者符合很好。
Photochemical reaction on ITO surface induced by soft X-ray irradiation 软X射线辐照引起的铟锡氧化物表面光化学反应
Research on the Mechanism of Original Crack Formation for Cylindrical Shells under Inner Pressure and Surface Laser Irradiation 充内压圆柱壳在激光辐照下的初始裂纹萌生机制研究
Simulation result is verified through the thermocouple temperature transducer measuring the surface temperature of material under the laser irradiation. 通过温度传感器测量激光强化时材料表面温度的变化来验证数值模拟的结果。
Fractographic analysis of aluminum cylindrical shells damaged by inner pressure and surface laser irradiation 激光辐照下充压铝柱壳爆裂断口分析
The failure processes of rotating cylindrical shells subjected to inner pressure and surface laser irradiation are studied here. The physics model and numerical solution model of thermal and mechanical responding is described. 建立了激光辐照下充压旋转柱壳热力学响应的物理模型和数值计算模型,求解了激光产生的非线性温度场。
This work includes the separation of particles, disposing of the particle sample on the surface of nuclear track detector, irradiation of the sample by thermal neutrons and chemical etching, selection of uranium particles and so on. 研究内容包括擦拭样品与载体分离、样品在裂变径迹片上沉积、样品辐照以及化学刻蚀、铀微粒筛选等。
This paper describes an experimental investigation of temperature change of materials surface which is irradiated by high energy pulse laser. Through experiments the temperature increasing rate and the temperature profiles of materials surface in laser irradiation could be obtained. 通过在高能脉冲激光照射下材料表面温度变化的实验研究,测量了在高能量、极短时间尺度、温度变化率极大的情况下材料表面的温升速率和温度变化规律。
From the SEM image, the results indicated that microwave treated samples appears irregular with a complex acicular structure. The pores of samples surface can be opened through microwave irradiation, which lead to increased surface area. SEM结果表明,经过微波处理后的样品呈现出不规则的针状结构,在样品的表面上很多的孔被打开,导致了样品的表面积增大。
Moreover, the variations of the morphology of the surface before and after UV irradiation were measured by Atomic Force Microscopy ( AFM). 接着,采用原子力显微镜(AFM)观察聚合物刷在紫外-可见光照射前后的表面形貌变化。
Some surface properties, such as surface morphology, microhardness, roughness and corrosion resistance of the surface before and after irradiation was comparative analyzed, and a group of optimized parameters of machining process using pulsed electron beams was given. 对比分析电子束处理前后材料表面形貌,显微硬度、粗糙度、耐腐蚀等性能,并与模拟结果对比分析,确定最优化齿轮脉冲电子束加工工艺参数。
In this thesis, we fabricated surfaces with gradient surface energy by VUV irradiation, which can make liquid droplets move on it. Then the movement of different liquid on gradient surfaces was studied in detail. 本文利用自组装单分子膜的光响应性,通过真空紫外光照,制备了能使液滴自发运动的梯度表面能表面,进而研究了不同液滴在各种梯度表面上的运动情况。
Arrays of sharp conical spikes are formed on the silicon surface by the cumulative irradiation of ultrashort laser pulses in the presence of ambient gases. 在一定环境气体氛围下,用超短激光脉冲照射硅片表面,会在硅表面产生准规则排列的锥形尖峰结构。