quantum size effect 中文意思是什麼
quantum size effect
解釋
量子尺寸效應-
A series of near roundness cds nanoparticles with a particle diameter of 3 ~ 6nm have been prepared by controlling the concentration and proportion of reactants and adopting sodium hexametaphosphate as stabilizing agent. the studies demonstrate that these particles present obvious quantum size effect and an appropriate excess of cd2 + ion and hexametaphosphoric acid group polysnion are helpful to the dispersion and flame capability ' s improvement of particles. another series of near roundness monodisperse au nanoparticles with a diameter of 12. 3nm was prepared via sodium citric acid deoxidizing auric chloride acid
利用六偏磷酸鈉作為穩定劑，通過控制反應物的濃度及比例，制備了粒徑為3 6nm 、呈近似球形的cds納米顆粒，光譜測試結果表明，顆粒具有明顯的量子尺寸效應，適當過量的cd ~ （ 2 + ）離子以及六偏磷酸根聚陰離子有助於顆粒的分散並提高其發光性能；採用檸檬酸鈉還原氯金酸，制備了接近球形、平均粒徑約為12 . 3nm的單分散體系au納米顆粒；採用wessling的前驅聚合物法獲得導電聚合物ppv前驅體。 -
In this article, four basic properties of nanometer particle are summarized : quantum size effect, surface effect, volume effect, macroscopical quantum tunnel effect, and several ways of preparation and evaluation of nanometer particle are introduced
摘要綜述了納米微粒的四個基本特性：量子尺寸效應、表面效應、體積效應及宏觀量子隧道效應，並介紹了納米微粒的制備方法及對納米微粒評估的方法。 -
Along with silicon ulsi technology has seen an exponential improvement in virtually any figure of merit, as described by moore ’ s law ; the miniaturization of circuit elements down to the nanometer scale has resulted in structures which exhibt novel physical effects due to the emerging quantum mechanical nature of the electrons, the new devices take advantage of quantum mechanical phenomena that emerge on the nanometer scale, including the discreteness of electrons. laws of quantum mechanics and the limitations of fabrication may soon prevent further reduction in the size of today ’ s conventional field effect transistors ( fet ’ s )
隨著超大規模集成電路的的發展，半導體硅技術非常好地遵循moore定理發展，電子器件的特徵尺寸越來越小;數字集成電路的晶元的集成度越來越高，電子器件由微米級進入納米級，量子效應對器件工作的影響變的越來越重要，尺寸小於10nm將出現一些如庫侖阻塞等新特性。量子效應將抑制傳統晶體管fet繼續按照以前的規律繼續減小。在這種情況下，宏觀的器件理論將被替代，可能需要採用新概念的晶體管結構。 -
Its band gap is 2. 42ev at room temperature. cds nanoparticles show significant quantum - size effect when their sizes are smaller than 6nm
當cds粒子的粒徑小於其激子的玻爾半徑（ 6nm ）時，它能夠呈現出明顯的量子尺寸效應。 -
Cdso. iseo. 9 nanocrystals exhibited the excellent resonant and non - resonant third - order optical nonlinearties from electroabsorption spectra. quantum size effect was also observed
對納晶電調制吸收光譜的測試，納晶表現出很好的共振和非共振三階光學非線性性能及量子尺寸效應。 -
We have investigated transport properties of electrons in magnetic quantum structures under an applied constant electric field. the transmission coefficient and current density have been calculated for electron tunneling through structures consisting of identical magnetic barriers and magnetic wells and structures consisting of unidentical magnetic barriers and magnetic wells. it is shown that the transmission coefficient of electrons in a wider nonresonance energy region is enhanced under an applied electric field. the resonance is suppressed for electron tunneling through double - barrier magnetic ( dbm ) structures arranged with identical magnetic barriers and magnetic wells. incomplete resonance at zero bias is changed to complete resonance at proper bias for electron tunneling through dbm structures arranged with different magnetic barriers and magnetic wells. the results also indicate that there exist negative conductivity and noticeable size effect in dbm structures
對磁量子結構中電子在外加恆定電場下的輸運性質進行了研究.分別計算了電子隧穿相同磁壘磁阱和不同磁壘磁阱構成的兩種磁量子結構的傳輸概率和電流密度.計算結果表明，在相當寬廣的非共振電子入射能區，外加電場下電子的傳輸概率比無電場時增加.對于電子隧穿相同磁壘磁阱構成的雙磁壘結構，共振減弱；對于電子隧穿不同磁壘磁阱構成的雙磁壘結構，無電場作用時的非完全共振在適當的偏置電壓下轉化為完全共振，這時的電子可實現理想的共振隧穿.研究同時表明，磁量子結構中存在著顯著的量子尺寸效應和負微分電導 -
The uv - vis absorption spectra of pbs nanoparticles exhibit a blue shift in the absorption edges of the samples compared with that of bulk pbs, indicating the quantum size effect of pbs nanoparticles
Pbs納米粒子的紫外吸收帶邊與其體相材料相比發生了藍移，表現出明顯的量子尺寸效應。 -
Quantum size effect and photocatalytic properties
超微粒子的量子尺寸效應和光催化性能 -
In this chapter, we described some basic properties of nanoparticle, such as quantum - size effect, surface effect, small - size effect, macro - quantum tunnel effect and so on
第一部分：綜述第一章；納米微粒的特性與應用本章主要介紹了納米材料的一些基本特性。例如：量子尺寸效應、表面效應、小尺寸效應、宏觀量子尺寸效應等。 -
The ab initio calcu1ation by selecting cluster mode1 with different size showed that with the decrement of model size the quantum - sized effect was more prominence, the energy distance was bigger near fermi energy, the energy schism was also more obvious
選取不同尺度的簇模型從頭計算表明，隨著尺度的減小量子尺寸效應越發顯著，費米能級附近的能級間隔變大，能級分立現象更加明顯。 -
The nanometer particles are metastable materials that lie between macroscopical materials and atoms or molecules with the characteristics of little size effect, quantum measurement effect, surface effect and macroscopical quantum tunnel effect, etc., thus demonstrating some special properties
納米粒子是介於宏觀物質與微觀原子或分子之間的過渡亞穩態物質，具有小尺寸效應、量子尺寸效應、表面效應與宏觀量子隧道效應等，從而表現出一些特殊的性質。 -
Nanoscience have been drawn considerable interest and physicaly investigated all over the world. the nanoparticles have different properties compared with bulk materials such as quantum size effect, surface effect, the dieletric confinement etc. the intrinsic optical properties of nanoparticles have been thoroughly studied
納米材料科學是一門涉及多學科領域的科學，納米顆粒由於尺寸小能產生量子尺寸效應，表面效應，介電限域效應和宏觀量子隧道效應等。 -
The effect of polarons on the luminescence properties of quantum dots ( qds ) is an important problem in qd research and applications. we review the recent progress in the concept, possibility and size dependent energy variance of confined polarons in various qds. we suggest that the formation of polarons is related to intrinsic and / or extrinsic phonons and that the idea of confined polarons that we recently proposed can be used to explain the specific spectrscopic characteristics of oxidized nanosilicon systems, even single nanosilicon structures. this model may help to reveal the luminescence mechanism of porous silicon
量子點中的極化子效應是當前量子點研究中的重要問題，其特徵急需了解.文章在綜述了量子點中限域極化子的概念、可能性和能量隨尺寸的變化規律之後，提出了界面限域極化子模型，該模型首次指明本徵聲子和外來聲子都可能對界面限域極化子的形成有貢獻.作者利用此模型分析了多孔硅體系中的光譜特徵，證實了表面覆有氧化層的納米硅的行為十分符合量子限域極化子的特徵.這一極化子模型與單個納米硅結構的發光譜十分一致，此結果對最終揭示多孔硅發光機理有重要意義 -
The size of the zno nanocrystal grain was so little that the quantum confinement effect should be considered. that makes the band gap wide. atom transfer rate is affected by the substrate temperature, and the average size of the zno nano crystal grain increases with the increasing substrate temperature resulting in the red shift of pl emission position and the narrowness of pl fwhm
低溫生長的氧化鋅晶粒小，考慮到量子限制效應，禁帶寬較大；襯底溫度影響吸附原子遷移能力，隨著溫度升高，晶粒的尺寸增大，分佈變的均勻，因而發光峰位隨著襯底溫度的升高而紅移，發光的半高寬變小。 -
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） 。 -
According to the problems in current research, my works have four parts as following : 1. cds nanoparticles were synthesized by surface - modified with thiourea and stabilized by poly ( n - vinyl - 2 - pyrrolidone ) ( pvp ). the results showed that cds nanoparticles, which exhibited significantly quantum size effect and enhanced luminescence, were prepared through the surface modified with thiourea
鑒于目前使用苯硫酚修飾對cds納米粒子的熒光具有強烈的淬滅作用，而硫醇具有較強的毒性，本研究用硫脲作表面修飾劑，以聚乙烯吡咯烷酮（ pvp ）作穩定劑制備了粒徑分佈較均勻、性能穩定的cds納米粒子。 -
Due to their unique optical, electrical properties and potential applications based on quantum size effect, small size effect and interface effect, cermet films consisting of ceramic matrix and embedded metal nanoparticles are attracting increasing attention for both fundamental and practical reasons
作為一類新型的功能薄膜材料，由納米金屬微粒鑲嵌于陶瓷基體中所構成的金屬陶瓷薄膜，由於量子尺寸效應、小尺寸效應、界面效應而具有獨特的光電特性和良好的應用前景，正在引起材料學界的極大關注。 -
Quantum - size effect of semiconductor nanocrystals cds0. 1se0
9半導體納米晶體的生長和吸收光譜的研究 -
Nano - composites of polymers not only can behave small size effect, surface effect and quantum - dimension effect with nanoparticles, but also possess advantages of polymer, which take on abnormal properties in mechanics properties, physical functions ( optics electricity magnetism etc ). so, nano - composites of polymer have widely applications
高分子納米復合材料既能發揮納米粒子自身的小尺寸效應、表面效應和量子效應，而且兼有高分子材料本身的優點，使得它們在力學、物理功能（光、電、磁、 ）等方面呈現出常規材料不具備的特性，故而有廣闊的應用前景。
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