quantum crystal 中文意思是什麼
quantum crystal
解釋
量子晶體-
Firstly, quantum theory is introduced to liquid crystal microcosmic theory
給出s _ a相新的微觀理論。 -
Through charoma theory and metal - bearing ores " color index analysis, the color of the turquoise is quantitated. crystal field spectra of cu2 + ion have been analysed and compared with the oretical calculations, the results show that the basic color of turquoise ( azure ) is related to the existence of cu2 + octahedron. in this charpter, quantum mineralogy theory is used in quantity
通過吸收光譜實驗，利用量子礦物學的有關知識，對綠松石中銅離子的晶體場譜進行了計算，並利用晶體場理論解釋了綠松石吸收光譜，揭示了綠松石顏色形成的主要原因是聯系著晶體場譜的顏色：過渡金屬銅離子對綠松石的顏色起主要作用? ?決定了綠松石的基本色調（天藍色） 。 -
Abstract : we have studied the spontaneous emission from a three - level atom with an external - driving field in a photonic crystal. as a result of quantum interference and photon localization, the population in the two upper levels displays quasi - oscillatory oroscillatory behavior. this depends on the initial atomic state and the relative positions of the two upper levels from the forbidden gap. the intensity and the phase of the external field can affect spontaneous emission from the atom. the properties are different from a three - level atom either in vacuum or in aphotonic crystal without an external driving field
文摘:討論了在雙光子驅動場作用下，三能級原子在光子晶體中的自發發射問題.由於量子干涉和光的局域化作用，兩個上能級中的占據數將具有周期振蕩或準周期振蕩的性質，這不僅依賴于兩個上能級與禁帶的相對位置，同時也依賴于原子的初始狀態，而且還與驅動場的強度、驅動場的入射位相有關.這些性質既與真空中帶有驅動場的原子的自發發射性質不同，也有別于無驅動場作用下光子晶體中三能級原子的自發發射性質 -
Furthermore, the growth and the study of self - organized quantum dots structures become more and more important recently, and the application of self - organization technique become wider and wider in this thesis, we address the theory of film growth and the growth technique firstly more, the ways and characteristics of surface detection are prescribed we mainly report the growth process, results and discuss of self - organized quantum dots structures in the a12o3 substrates by s - k mode using ecr - mocvd, in the espd - u device the growth art of ain epilayer which is the preliminary foundation of self - organized gan / ain quantum dots structures, including the substrate cleaning, nitridation, the growth of buffer and the growth of gan and ain epilayer, is discussed we deliberately compare the test result of rheed xrd and afm and achieved the optimalized condition of ain at last we have successfully realized the growth of ain which is much smooth and better crystal quality moreover, we grow the self - organized gan / ain quantum dots structure in s - k mode because the limits of the heater temperature, we can not grow the atom - smooth epilayer of ain until now so we could not grow better quantum dots which have small diameter and big density but the self - organized quantum dots structures with better quality will be realized successfully if the substrate temperature is increased the thesis study belong to my tutor subject of national nature science foundation ( 69976008 )
本論文主要論述了在espd - u裝置上，採用電子迴旋共振等離子體增強mocvd （ ecr - pamocvd ）方法，在藍寶石襯底上通過s - k模式自組裝生長gan aln量子點結構的生長工藝、結果及討論。而重點分析了自組裝生長量子點之前的aln外延層生長工藝，包括襯底清洗、氮化、緩沖層的生長和gan 、 aln外延層的生長；通過高能電子衍射、 x射線衍射和原子力顯微鏡測試，並且對這些測試結果進行了詳細的比較研究，得出了較優化的工藝條件，生長出了晶質較好、表面較平整的aln外延層；進而採用s - k模式自組裝生長了gan aln量子點結構。由於實驗裝置加熱爐溫度的限制，我們沒有能夠生長出原子級平滑的aln外延層表面，因而沒能夠生長出密度比較大和直徑比較小的量子點。 -
We use full quantum theory to investigate the decay distribution of atoms in one - dimensional photonic crystal and the quantum interference property of a v - type three - level atom placed between two parallel plates
採用全量子理論，本文研究了一維光子晶體中原子自發發射的壽命分佈和置於兩平板介質之間的v型三能級原子的量子干涉性質。 -
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。 -
Topics covered include crystal structure and band theory, density functional theory, a survey of properties of metals and semiconductors, quantum hall effect, phonons, electron phonon interaction and superconductivity
內容包括了晶體結構和能帶理論，密度泛函理論，金屬和半導體特性概論，量子霍爾效應，聲子，電子-聲子的相互作用以及超導電性。 -
The crystal structure of the quantum paraelectrics is mainly perovskite type, similar to most of the ferroelectrics, and external factors, e. g. impurity doping, may induce ferroelectric phase
量子順電體的結構和鐵電體很相似，大部分屬于abo _ 3的鈣鈦礦結構，所以應力或摻雜等易使之成為鐵電體。 -
This paper shows the investigation on the magnetic properties of the single crystal ergag under high magnetic field by quantum theory, and gains the magnetic anisotropy. it is in good agreement with the result of the experiment. using quantum theory, taking the special microscopic structure of ergag into account, we calculate and analyse the splitting of the lowest level ( 4i15 / 2 ) according to the crystal field
本文作者經過詳細推導和計算第一次用量子理論定量計算了磁場作用下單晶ergag石榴石的磁特性，得出了在外磁場下ergag石榴石在溫度4 . 2k時產生的與實驗基本吻合的磁性各向異性現象，利用量子理論，鑒于ergag的特定的微觀結構，計算基態（ 4 ~ i _ （ 15 / 2 ） ）能級在晶場作用下的劈裂，得出由於ergag的順磁性，故其晶場作用下晶體的總磁矩應該為零。 -
Topics covered include : crystal lattices, electronic energy band structures, phonon dispersion relatons, effective mass theorem, semiclassical equations of motion, and impurity states in semiconductors, band structure and transport properties of selected semiconductors, and connection of quantum theory of solids with quasifermi levels and boltzmann transport used in device modeling
被覆蓋的論題包括：晶格、電子能帶結構、聲子色散關系、有效質量理論、半經典運動方程和半導體中的非純態、選擇性半導體的帶結構和輸運性質固體量子理論與準費米能級以及用於器件建模的玻爾茲曼輸運理論之間的聯系。 -
Wavelet transform, which is a new powerful mathematical tool appeared in recent years, is regarded as the crystal work of pure mathematical field and the great breakthrough in signal - picture analysis and quantum physics, and is thought as the new trend of applied mathematics. because of its good time - frequency localization and flexible time - frequency windows, wavelet transform has been widely applied in such as signal study, picture process, quantum mechanics, radar, computer identification, earthquake exploration, so on and so forth
小波分析是近年來出現的嶄新而有力的數學工具，由於其良好的局部化特性和彈性的時-頻窗特點，而被認為是調和分析這以純數學重要領域半個世紀以來工作之結晶，也是信號與圖像分析、量子物理等科學和工程技術近十年來在數學方法上的重大突破，從而被認為是應用數學的新趨勢。 -
In order to get single - photon state and reconstruct its wigner function, the two aspects, spdc of pulse pumped nonlinear phase match type i bbo crystal and reconstruction of wigner function of quantum state, are studied in this thesis. 1
本文是單光子態制備及其wigner函數重構課題中的部分內容，主要包括兩個方面內容，即脈沖抽運的類非共線相位匹配bbo晶體的自發參量下轉換過程和利用量子層析攝影術重構光量子態的wigner函數。 -
But the absorption efficiency, stokes efficiency, quantum efficiency and the superposition efficiency between pump mode and cavity mode is less than one respectively, so the local heat absorption of the crystal is quite strong, and its thermal effect is quite obvious. two measures were taken
但是，由於量子效率小於1 ，斯托克斯頻移，泵浦光與基模的非完美空間重疊以及激光晶體的偏振吸收等因素積聚在晶體內的熱量隨泵浦輻射而變化，出現更為復雜和明顯的熱透鏡效應。
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