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V型沟道上发生的液滴自推进现象 被引量:2
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作者 苏亮亮 王力 +2 位作者 王晖 潘永华 高惠滨 《物理实验》 2012年第4期43-46,共4页
在V型沟道上研究了基于"Leidenfrost现象"的液滴自推进运动情况.V型沟道的引入,不仅解决了以往平板构型下自推进运动的不稳定问题,而且可以降低液滴的转变温度,使自推进现象更容易发生.
关键词 Leidenfrost现象 自推进 v型沟道
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Optical Gain of V-groove Zn_(1-x)Cd_x Se/ZnSe Quantum Wires
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作者 HEGuo-min ZHENGYong-mei 《Semiconductor Photonics and Technology》 CAS 2001年第1期1-7,共7页
The subband structures, distributions of electron and hole wave functions, state density, optical gain spectra, and transparency carrier density of the V-groove Zn 1-x Cd x Se/ZnSe quantum wires are investigated theor... The subband structures, distributions of electron and hole wave functions, state density, optical gain spectra, and transparency carrier density of the V-groove Zn 1-x Cd x Se/ZnSe quantum wires are investigated theoretically using four band effective-mass Hamiltonian, which takes into account the effects of the valence band anisotropy and the band mixing. The biaxial strain effect for quantum wires is included in the calculation. The compressive strain in the Zn 1-x Cd x Se wire region increases the energy separation between the uppermost subbands. The optical gain with xy -polarized light is enhanced, while optical gain with z -polarized light is strongly decreased. The xy -polarized optical gain spectrum has a peak at around 2.541 eV, with the transparency carrier density of 0.75×10 18 cm -3 . The calculated results also show that the strain tends to increase the quantum confinement and enhance the anisotropy of the optical transitions. 展开更多
关键词 Optical gain v-groove quantum wires Hole subband structures
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