光激发
- Photoexcitation;optical excitation
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并对Er发光中心的组成和光激发机制作了分析讨论。
The formation and optical excitation mechanism of Er luminescence centers in the samples were analysed .
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外电场作用下二氧化硅分子的光激发特性研究
Effect of external electric field on the optical excitation of silicon dioxide
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同时还对光激发铜配合物断裂DNA的机制和性能进行分析;
In addition , the photo-induced DNA cleavage by copper complexes has also been surveied briefly .
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响应波段外激光辐照PC型半导体探测器时,探测器有响应且输出电压信号迅速增大,与波段内激光辐照时的响应规律截然不同,这是由光激发能带内热电子而引起的光电导现象。
The response of a photoconductive semiconductor detector under off-band laser irradiation is different from that under in-band laser irradiation .
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光激发纳米TiO2对胃癌SGC-7901细胞的杀伤作用
Damaging Effects of Photoexcited TiO_2 Nanoparticles on Gastric Cancer SGC-7901 Cells
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光激发下Li6Gd(BO3)3:Ce晶体发光和衰减的温度依赖特性
Temperature Dependence of Luminescence and Decay Time under Optical Excitation from Li_6Gd ( BO_3 ) _3 : Ce Single Crystals
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采用紫外过氧化氢(UVH2O2)的光激发氧化工艺去除饮用水中的内分泌干扰物阿特拉津,考察了影响降解效果的因素。
A study on degradation of atrazine ( an endocrine disruptor ) in drinking water by UV-H_2O_2 process was carried out .
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互组合线共振光激发NaXI离子的粒子数反转研究
Soft X-ray population inversion of Na XI levels by inter-combination line resonant photoexcitation
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反应溅射掺碳二氧化钛(TiO(2-x)Cx)薄膜可见光激发的亲水性和光催化特性研究
The study of hydrophilicity and photocatalytic of carbon-doped titanium oxide ( TiO_ ( 2-x ) C_x ) films to visible-light prepared by gas-reaction RF sputtering
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将一种经可见光激发后能储藏能量、其余辉时间较长的长余辉荧光粉加入聚甲基丙烯酸甲酯(PMMA)透明塑料中,制成光致发光材料。
A kind of plastics with long persistent fluorescence that could be activated by visible light was prepared by adding some fluorescent powder into common PMMA plastics .
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WO3改性扩大了WO3/TiO2光激发波长范围。
The range of excitation light wavelength is extended for the modification of WO 3 .
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其中,以N掺杂TiO2(N-TiO2)为代表的在可见光激发下具有高催化活性的材料,被誉为第二代光催化材料,并得到广泛研究。
As the second generation photocatalytic materials , N doped TiO2 ( N-TiO2 ) is the representative photocatalyst , which could be stimulated by the visible range light .
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光激发GFP荧光是一个特异性的独立过程,并不需要任何的协同因子、底物或其它来自于水母的基因表达产物。
GFP fluorescence excitation is independent of a specific process , does not require any cofactors , substrates or other from the jellyfish gene expression product .
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高分子光激发的超快过程与弛豫对纯Ni体系在两种不同冷却条件下的动力学参数进行了模拟计算,对过冷液体驰豫、结晶、非晶形成之间的关系进行了初步的探讨。
MD simulations on the dynamic functions of liquid Ni during two different cooling processes are performed , as well as a primary discussion on the process of relaxation , nucleation and glass transition for supercooled liquid .
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在有KI存在的乙酸钠-HCl酸性缓冲溶液中,用520nm光激发罗丹明B(RhB),在580nm处有一个荧光峰。
In acidic sodium acetate-HCl buffer solution containing KI , Rhodamine B ( RhB ) has a fluorescence peak at 580 nm .
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利用多声子跃迁理论,解释了聚合物中光激发动力学中的快成分(100fs)和慢成分(ns)的起源。
On the basis of multi-phonon transition theory , the origin of the fast component ( 100 fs ) and the slow component ( ns ) in photo-excitation dynamics is explained and their evolution time is calculated .
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EGFP在488nm光激发下会辐射绿色荧光,利用激光共聚焦显微镜对藻细胞直接进行荧光活性检测。
Under the 488 nm excitation light , EGFP will eradiate green fluorescent . And the fluorescent from the active algal cells can be detected by using laser scanning confocal microscope directly .
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结果表明,在蓝色光激发下(495nm),活细胞被双醋酸荧光素FDA染成亮绿色,死亡细胞被碘化丙锭PI染成红色。
The results indicated that viable and dead cells were stained as bright green and red fluorescent cells respectively by fluorescein diacetate and propidium iodide under blue excitation ( 495nm ) .
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用光激发氧化钬滤光片标准物质GBW(E)130112时,能发射547·7nm的荧光谱线。
The holmium doped oxide reference material GBW ( E ) 130112 is a kind of standard reference material for absorption spectrophotometer . It can emit 547.7 nm fluorescence when excited by xenon lamp light .
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本文基于含链间相互作用的扩展的SSH模型,结合了绝热近似下的动力学方法,主要讨论准一维二嵌段高聚物中分子弹性对光激发动力学过程和极化子电荷转移的影响。
Within an extended Su-Schrieffer-Heeger model including interchain interactions , the influence of molecular elasticity on the dynamics of photoexcitations and charge transport of polaron in one-dimensional ( 1D ) diblock copolymers was studied by using a adiabatic evolution method .
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在980nm光激发下,粒子显示出较强的上转换发光。
In the 980 nm light excitation , the particles showed strong up-conversion luminescence emission .
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本文采取AM1半经验量子化学计算方法计算了所有135种PCDFs的生成热和前线分子轨道能量,据此讨论了PCDFs分子光激发和还原脱氯难易程度与分子结构之间的关系。
In this paper , the photo-degradability of all 135 iso-mers of was explored via computing heats of formation and energies of frontier molecular orbitals with AMI semiempirical computational method .
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本文根据气流模型研究了反应室结构与光激发汽相淀积(PVD)SiO2薄膜均匀性的关系,并且讨论了工艺参数对PVDSiO2薄膜均匀性的影响。
Based on gas flow models , the correlation of reactor structure with the uniformity of photochemical vapor deposited ( PVD ) SiO2 films has been investigated and effect of process parameters on the uniformity of the film is discussed in this paper .
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我们运用密度泛函和含时密度泛函(TDDFT)理论方法研究了三者在基态和激发态的性质,给出了详细的结构信息及不同基团在光激发前后的构型变化。
In this work , the time-dependent density functional theory ( TD-DFT ) method has been used to study their properties in excited states . Much information about structure in ground and excited states and the change of different units before and after photo-excitation has been provided .
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结果表明,在975nm抽运光激发下,观察到强烈的绿光和微弱的红光;绿光和红光发射是由于双光子吸收过程,其上转换机理是能量转换(ET)和激发态吸收(ESA)。
The results showed that the intense green and weak red emissions were observed , a two photon upconversion process was assigned to the green and red emissions , and the possible upconversion mechanisms were involved in excited state absorption and energy transfer between excited Er 3 + ions .
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测定了Tm:LGS晶体的室温吸收谱和470nm光激发下的发射光谱;
The absorption spectra and emission spectra ( excitated under 470nm ) of Tm : LGS single crystal was measured at room temperature .
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然而存在的问题是氧化亚铜被光激发产生的光生空穴电子对易复合,导致光量子效率不高。而沉积导体如贵金属在Cu2O表面或者Cu2O和其它半导体复合能解决这些问题。
There is a limitation that the carriers excitated by light cannot be transferred efficiently and are easy to recombine , to solve this problem , Cu2O composite with other semiconductors or conductive materials such as noble metals may be a good way .
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真空紫外光辐射下的发光光谱(VUV-PL)显示所得粉体在147及172nm处有较强的真空紫外吸收,172nm光激发下的粉体在450nm处呈现强的宽带发射;
The phosphor shows strong absorbability of vacuum ultraviolet ( VUV ) light at 172 nm and 147 nm and broad blue emission at 450 nm under VUV excitation .
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以燃烧法快速合成了Eu~(2+),Dy~(3+)掺杂的铝酸锶发光粉,发光粉经自然光激发可观察到明亮的黄绿光,余辉可达12h以上。
Eu ~ ( 2 + ) , Dy ~ ( 3 + ) co-doped strontium aluminate phosphor powders with high brightness and long afterglow were prepared by combustion synthesis for several minutes . After excitement the bright yellow green light was observed and its afterglow lasted more than 12 h.
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由瞬态吸收光谱可观察到MV+、PyTS+的瞬态吸收峰,这表明PyTS/MV2+复合物被光激发后,发生了由PyTS到MV2+的电子转移过程;
The transient absorption peaks of MV + and PyTS + have been detected using nanosecond transient absorption method , it shows that the electron transfer process from PyTS to MV 2 + occurs when the PyTS / MV 2 + complex was excited .