The uv - vis spectra , contact angle test and afm analysis indicated that all the films so prepared had a layer - by - layer structure . transmission electron microscopy ( tem ) analysis revealed that zno nanoparticles were equally distributed in the composite film 采用紫外一可见光谱wv vis ） 、接触角测试、原子力显微镜（ mm ）等分析技术对纳米复合湿敏膜进行了表征，发现四个纳米自组装复合膜体系都是层层交替结构， zno纳米粒子均匀分散于有机无机自组装膜中。
The infrared results showed that the ir characteristic value l080cm - lof cubic crystal sio , and the absorption peak 460cm - l of mgf , caused by the interaction between f - - mg ' + - p elastic vibration and photon radiation , appeared in the ir spectra . ellipsometric analysis showed that the typical absorption peaks 58lnm , 589nm and 606nm , resulting from the surface plasma resonance of cu panicles and reflecting the absorption on composite film system , appeared in the extinction coefficient k curves of cu ( voll5 % ) mgf , , cu ( vol20 % ) mgf , and cu ( vol30 % ) mgf , cermet films , respectively . with the component of cu increasing , the peak site presented red shift , which was in accordance to the results of ultraviolet - visible spectra 椭偏测试分析表明： cu ( vol15 ) mgf _ 2 、 cu ( vol20 ) mgf _ 2和cu ( vol30 ) mgf _ 2样品的消光系数k曲线中出现了反映复合金属陶瓷体系吸收的由cu金属颗粒表面等离子体共振引起的吸收峰，峰位分别为581nm 、 589nm和606nm ，呈现红移，这些与紫外-可见光谱测试结果相一致；此外， cu - mgf _ 2复合纳米金属陶瓷薄膜光学常数的实验值与考虑尺寸效应修正过的mg理论值总体上符合得很好。
Especially , the nano - iron and nano - tungsten sols as well as their powders were characterized in detail by xrd , ft - ir , uv - vis , xfs , tem , sem , edax and so on . another new method is put forward firstly to estimate the addition of dispersants and its effect by uv - vis 重点选取纳米铁乙醇溶胶和纳米钨乙醇溶胶以及其中的纳米颗粒进行了详细表征，所涉及的测试方法包括x射线衍射、傅立叶红外光谱、紫外-可见光谱、荧光光谱、透射电子显微镜及选区衍射、扫描电子显微镜及微区能谱分析等等。
Primarily this is because the condition for non - reflecting coating i . e . thickness of 1 4 the wavelength of light in the coating material , see above applies for one wavelength only , which is usually chosen to be one near the middle of the visible light spectrum . the reflection of red and violet light on either side is then somewhat larger 基本原因是不反射镀膜镀膜物质的厚度是光波长的四分之一只适用于一种波长，这波长一般在可见光谱中间选取，所以位于光谱两侧的红光和紫光反射较大。
Based on the above work , the optical absorption and photoluminescence ( pl ) properties of a - sinx : h films with different compositions are studied through ultraviolet - visible spectroscopy ( uv - vis ) and time - resolved photoluminescence ( tr - pl ) , the dependence of pl intensity decay on emission photon energy is found , the luminescence mechanism of nanosilicon embedded in silicon nitride matrix is presented , finally , the effective approaches to improving the luminescence efficiency of a - sinx : h films are discussed 在此基础上，通过紫外-可见光谱( uv - vis )技术，时间分辨光致发光谱技术研究了不同组分的富硅a - sin _ x ： h薄膜的光吸收和光辐射特性，得到了材料光致发光衰减和辐射光子能量之间的关系，提出了镶嵌在氮化硅中的纳米硅的发光机制，进而探讨了提高纳米硅薄膜发光效率的有效途径。
Meso - tetra ( 4 - acyloxyphenyl ) pophyrin was prepared by usual procedure from acyl chloride and meso - tetra ( 4 - hydroxyphenyl ) porphyrin in benzene and obtained in 86 . 4 % yield . treatment of the free base with zinc chloride in dimethyl formamide ( dmf ) - dichloromethane ( ch2cl2 ) yielded corresponding zinc porphyrin complex . the spectral data ( uv - visjr / h - nmr ) and elemental analysis are in agreement with the assigned structures 在合成工作基础上，采用紫外可见光谱( uv - vis ) 、红外光声光谱( ftir - pas ) 、核磁共振氢谱( ~ 1hnmr ) 、元素分析、摩尔电导等手段研究了卟啉及金属卟啉材料的组成及结构。
Conventional lights bulbs with their yellow rays will soon become lighting dinosaurs , replaced by leds that bring natural light into the offices and homes throughout the world . the improved quality of the green and blue light can also sharpen up the images on tv , the cinema screen and mobile phones . and their potential applications do not stop there 发出黄色可见光谱的传统电灯泡不久将成为历史，而又发光二极管取代，它将为全球范围的家庭、办公室带来自然光，改进的蓝绿色光芒可以使电视，影院屏幕，手机上的图像更加光滑，而且，其潜力并不仅仅停留在这些方面。
4 . after having made a survey of ultraviolet spectrum , infrared spectrum and raman scattering spectrum at different silver - doped rate and compared the theoretical compute with the experimental values in references , we confirm that our new method of the preparation and purification of c60 is reliable and efficient 本文对银掺杂c60薄膜的粗糙化机理作了理论解释; 5 .测量得到了不同的银掺杂比率下薄膜的紫外一可见光谱、红外光谱和拉曼散射光谱，通过对比理论计算和文献中的实验测试值，验证了我们改进后的c6 。
The items carried out in this course including uv - vis analysis of dyes and organic compounds , determination of cr6 + in aqueous solution , quantitative analysis of inorganic phosphate , quantitative analysis of fe2 + , quantitative analysis of amino acid , application of atomic absorption , conductivity titration , acid - base titration , application of liquid chromatography , anionic chromatography , cationic chromatography , total organic carbon analysis , determination of chlorophyll and application of infrared spectrometer 实验项目包括染料色素及有机物的紫外光可见光谱分析、水中六价铬含量测定、无机磷酸盐的比色定量、试样中铁的比色定量、胺基酸的比色定量、原子吸收光谱法的应用、电导滴定方法的应用、酸减滴定法的应用、液相层析方法的应用、阴离子层析、阳离子层析，气体层析、总有机碳分析、叶绿素含量测定及红外线光谱法应用。
The naphthalocyanine and its embedded ultrafme particles lb films were sucsessfuly prepared by using langmuir - blodgett ( lb ) technique for the first time . the results of - a isotherm , uv - vis and ft - ir spectra indicated that the embedded lb films were composed of sno2 nanoparticles and cunpc molecules . in addition , after embedded sno2 ultrafme particals , the sensitivity of hybrid lb films to alcohols was much higher than that of pure cunpc lb films , for example the sensitivity to 1 ppm ethanol gas was 2 . 4 通过分子碎片法合成了八丁(乙)氧基- 2 , 3 -萘酞菁铜，首次利用lb技术制备了纯萘酞菁lb膜和萘酞菁包埋sno _ 2超微粒子复合lb薄膜，对其- a曲线、紫外-可见光谱、红外光谱的研究表明，利用lb技术可以实现萘酞菁与sno _ 2超微粒子的组装，而且复合薄膜对醇类气体的灵敏度有较大幅度提高，如对1ppm乙醇的灵敏度为2 . 4 ，因此，复合薄膜可以作为室温下醇类气体传感器进行开发研究。
