排序方式: 共有33条查询结果,搜索用时 31 毫秒
31.
32.
Angular distributions for 6Li-α scattering at six α-particle energies between 1.39 and 2.98 MeV (lab) along with the excitation functions for two narrow resonances have been measured. A phaseshift analysis of the off-resonance angular distributions was made for l ≦ 3 with the higher phases fixed at values calculated for d-exchange. The l ≦ 3 phase-shifts are compared with those calculated for d-exchange and known wide resonances. 相似文献
33.
Umar Rashid Elarbi Chatir Leonardo Medrano Sandonas PA Sreelakshmi Arezoo Dianat Rafael Gutierrez Gianaurelio Cuniberti Saioa Cobo Veerabhadrarao Kaliginedi 《Angewandte Chemie (International ed. in English)》2023,62(16):e202218767
By employing a mechanically controllable break junction technique, we have realized an ideal single molecular linear actuator based on dithienylethene (DTE) based molecular architecture, which undergoes reversible photothermal isomerization when subjected to UV irradiation under ambient conditions. As a result, open form (compressed, UV OFF) and closed form (elongated, UV ON) of dithienylethene-based molecular junctions are achieved. Interestingly, the mechanical actuation is achieved without changing the conductance of the molecular junction around the Fermi level over several cycles, which is an essential property required for an ideal single molecular actuator. Our study demonstrates a unique example of achieving a perfect balance between tunneling width and barrier height change upon photothermal isomerization, resulting in no change in conductance but a change in the molecular length, which results in mechanical actuation at the single molecular level. 相似文献