双层散射介质的单次后向散射光谱分析

从上皮组织的结构特点出发,基于米氏(Mie)散射理论,建立了双层散射介质的单次后向散射光谱的理论模型,该模型通过偏振门屏蔽来自下层的噪声背景,只保留来自上层的单次散射光。计算分析了粒子的形态学参量如平均尺寸及其分布、相对折射率变化时,单次散射光谱的特征。并用傅里叶波形分析法研究了这些参量对单次后向散射光谱曲线形状及其谐波幅值的影响。结果表明,这些只经历了表层粒子单次散射的光谱信号对表层粒子的平均尺寸及其分布、相对折射率具有灵敏性。对光谱曲线波纹结构的幅值、频率,散射强度,光谱谐波的幅值有直接的影响。研究结果对早期癌症的散射光谱特征识别及其特征提取有重要的实用价值。     

Moment Method with Wavelet Expansions for Fractal Rough Surface Scattering

We study the moment method(MM) to deal with Harr wavelet basis due to the problem of electromagnetic scatering from the fractal rough surface.The vanishing moment properties and the capability of the wavelets to adjust themseves to the fractal surface lead to a sparse impedance matrix and faster computation,Compared to the measured data and the conventional MM,the result shows that the wavelet basis functions provide substantial reductions in both memory requirements and computation time.     

拉曼对光散射的实验研究

介绍了拉曼的生平和对物理学的主要贡献，回顾了他从观察海水的蓝色人手，继而发现气体、液体对光的散射规律，一直到发现物质的散射光不仅包含原来的波长，而且还包括与原入射光不同的其他波长的散射的研究过程，并讨论了他的成功对我们的启示．     

n-羟基苯甲酸(n=p,m,o)在一种新的活性基底上的SERS研究(英文)

将银纳米颗粒覆盖在覆有铟锡氧化物的导电玻璃上,可以将其作为一种新型的表面增强拉曼散射(SERS)活性基底。将三种羟基苯甲酸分子作为探针分子在这种新的基底上进行检测,得到了很好的SERS信号,从中可反映出大量分子振动信息     

拉曼散射研究微尺寸圆锥形状的GeSi合金薄膜的应力(英文)

pacc:7830,7850C Wepresentthemicro-Ramanstudyof curvedGexSi1-x/GeySi1-yheterostructure,and foundthestrainofthecurvedthinlayerispropor tionaltothecurvature,i.e.inverselyproportional tothediameter.TheopticalandelectricpropertiesofSi1-x GexalloygrownonSisubst…     

Affine A3^（1） N = 2 Monopole as the D Module and AiTine ADHMN Sheaf

A Higgs-Yang-Mills monopole scattering spherical symmetrically along light cones is given. The left incoming anti-self-dual α plane fields are holomorphic, but the right outgoing SD β plane fields are antiholomorphic, meanwhile the diffeomorphism symmetry is preserved with mutual inverse afiine rapidity parameters μ and μ^-1. The Dirac wave function scattering in this background also factorized respectively into the （anti）holomorphic amplitudes. The holomorphic anomaly is realized by the center term of a quasi Hopf algebra corresponding to an integrable conformal affine massive field. We find explicit Nahm transformation matrix （Fourier Mukai transformation） between the Higgs YM BPS （fiat） bundles （1） modules） and the affinized blow up ADHMN twistors （perverse sheafs）. Thus we establish the algebra for the ＇t Hooft Hecke operators in the Hecke correspondence of the geometric Langlands program.