band particles 中文意思是什麼
band particles
解釋
堤岸土料顆粒-
We infered that this new absorption band was associated with the effect of charge - transfer transition between adsorbates and colloidal silver particles, not the effect of the surface plasma resonance due to the silver particles aggregation which was usually attributed to in previous research work
我們將其歸因於與納米銀顆粒表面間的電荷轉移效應（ ct ） ，而非通常所認為的因銀膠凝聚而產生的表面等離子體共振吸收效應。 -
Red shift of the plasmon absorption band was observed after gold particles were assembled into multilayer thin films, and the resulted gold films exhibited a strong surface enhanced raman scattering ( sers ) effect
金納米粒子組裝成膜之後，其表面等離子體共振吸收峰發生紅移，薄膜具有明顯的表面增強拉曼散射（ sers ）效應。 -
Abstract : from a universal formula for calculating the attenuation cross section of particles in arbitrary shapes, exact expressions for calcualting the attenuation cross section of polydisperse, small spheroids, whose rotary axes are in specific status, have been derived. attenuation cross sections of both liquid and ice particles in different shapes at different wavelengths in microwave band have been computed and analyzed. the results are informative to microwave remote sensing of precipitation
文摘:從計算任意形狀粒子的衰減截面普遍公式出發，推導出了小旋轉橢球粒子群旋轉軸處于不同狀態時的衰減截面函數表達式，並計算分析各種狀態下衰減截面隨降水粒子相態、形狀和入射波波長的變化特徵，所得結果可用於降水微波遙感。 -
In the first part, the basic knowledge of particle scattering in meteorology and physics was introduced. the particles to be discussed include aerosol particles, fog droplets and raindrops and the em wave band in the discussion is near - infrared. in the second part, the mie theory was briefly reviewed and was applied to investigate the scattering characteristics of spherical atmospheric particles, the result shows that in the visibility measurement meter using forward - scattering method, when the working wavelegth is between 0. 8 m ~ 2 m, the scattering angle is between 25 ~ 40, the distinguishability and the relative scattering intensity would be better than those under other conditions. in the third part, the superellipsoid was used to describe a wide range of shapes such as spheres. ellipsoids and cylinders. an improved t - matrix method which can be used to calculate arbitry shaped particle ' s scattering field was introduced, and the scattering characteristics of non - spherical atmospheric particles was investigated with this method
計算結果表明，從相對散射強度、同一方向上不同粒子散射的可區分程度來看，在散射式能見度探測儀器中，工作波長介於0 . 86 m 2 m ，探測角度選取前向25度40度時，探測的結果將會是比較理想的。第三部分中，使用超橢球方程來統一描述各種非球形粒子的形狀，然後使用t矩陣方法計算了一些形狀的非球形粒子的近紅外散射特性。另外，在本文中還針對球形粒子的散射場提供了一種三維可視化方法，使對散射場強度的空間分佈的理解更加簡單，直觀。 -
The absorption spectra indicate that the adsorption of dithiooxamide on the silver nanoparticles results in a red - shift in the spr band, mainly caused by the changes in the microenvironment of the metal nanoparticles and charge density alteration due to the charge transfer between the molecules and metal particles
吸收光譜結果表明銀納米粒子表面吸附二硫代乙二酰胺分子可導致金屬粒子的表面等離子體共振吸收紅移，主要與金屬粒子的微環境改變以及吸附分子與金屬間電荷轉移而導致的金屬粒子內部電子密度改變有關。 -
The zno particles are excited by ultraviolet ( uv ) exciting light ( 365 nm ), showing two photoluminescence ( pl ) peaks / bands, centered at 2. 90 ev ( blue ) and 2. 23 ~ 2. 41 ev ( yellow - green ), respectively. the intensity of the yellow - green band was reduced after the product had been annealed in n2 and o2 at 350 c for 1h. ultraviolet visible absorption spectrum shows that the zno absorbs ultraviolet light intensely
對于復合h ps zno結構的發光機制，認為是納米h價帶中的電子在紫外光的激發下，躍遷到zno的導帶，從而處于激發態，由於多孔硅的導帶比氧化鋅的導帶低， zno導帶中處于激發態的電子很快躍竄到多孔硅的導帶，然後再與h價帶中的空穴發生復合，發出可見光。 -
Nanoparticles show significant quantum - size effect ( such as energy band discreteness, band gap broadening, blue shift in spectra etc. ) as sizes of particles are smaller than bohr radis of exciton of bulk material with same composition ( for example, cds ’ s bohr radium is 6nm )
當納米粒子的尺寸小於其塊狀材料的激子波爾半徑時（如cds的激子波爾半徑為6nm ） ，能夠表現出明顯的量子尺寸效應（如能帶離散，禁帶變寬，光譜藍移等） 。 -
The blue shift could be associated with precipitation of xe gas bubbles. since the precipitation will change the defect morphology and reduce the sizes of each isolated defects, so to intensify the quantum size effects of nano - particles and induce the observed band gap broadening
10 ~ （ 17 ） cm ~ （ - 2 ）樣品峰位藍移，是由於xe以氣泡形式析出，改變了缺陷形態、使缺陷的分立尺寸減小，納米粒子的量子尺寸效應變得明顯，導致能隙展寬。 -
Core - shell nanocomposite particles, as attractive building blocks of advanced functional materials, have important applications in such areas as photonic band gap materials, microwave absorbing materials, electrorheological ( or magnetorhelogical ) fluids, catalysis and biology, etc
摘要核殼納米復合粒子具有許多不同於單組分膠體粒子的獨特的光、電、磁、催化等物理與化學性質，是構築新型功能復合材料的重要組元，在光子帶隙材料、微波吸收材料、電磁流變液、催化劑和生物等領域有重要應用。
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