排序方式: 共有9条查询结果,搜索用时 31 毫秒
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Borri P. Gurioli M. Colocci M. Martelli F. Polimeni A. Patane A. Capizzi M. 《Il Nuovo Cimento D》1995,17(11):1383-1387
Il Nuovo Cimento D - We report an experimental study on a large set of InGaAs/GaAs quantum well structures by means of continuous-wave photoluminescence and photoluminescence excitation. The... 相似文献
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Sanguinetti S Chiantoni G Miotto A Grilli E Guzzi M Henini M Polimeni A Patane A Eaves L Main PC 《Micron (Oxford, England : 1993)》2000,31(3):309-313
We have investigated the In(Ga)As island formation, in the Stranski-Krastanov growth mode, on (311)A GaAs substrates. The surface topography of InAs and InGaAs strained epilayers was studied by contact microscopies. The different substrate affects the overgrown island shape. In(Ga)As grown on (311)A gives rise to quantum wire-like islands. Quantum dots (QDs), but with highly anisotropic shapes, are the outcomes of InAs deposition. QD samples were also characterized by photoluminescence (PL) measurements. Correlation between optical and morphological properties was observed. 相似文献
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Yu. N. Khanin E. E. Vdovin L. Eaves I. A. Larkin A. Patane O. N. Makarovskiĭ M. Henini 《Journal of Experimental and Theoretical Physics》2007,105(1):152-154
The results of the investigation of tunneling transport through a GaAs/(AlGa)As/GaAs single-barrier heterostructure containing InAs self-assembled quantum dots at low temperatures are reported. An anomalous increase in the tunneling current through the quantum dots has been observed in the presence of a magnetic field both parallel and perpendicular to the current. This increase is a manifestation of a Fermi-edge singularity appearing in the current due to the interaction of a tunneling electron with the electron gas in an emitter. 相似文献
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Eight-membered ring β-keto lactones were prepared from 2,2,6-trimethyl-4H-1,3-dioxin-4-one in three steps involving conjugate addition to α,β-unsaturated aldehydes or ketones, followed by conversion to an alcohol and thermolysis. The formation of these eight-membered rings involves the intramolecular trapping of a hydroxy acyl ketene intermediate and is facilitated by a suppressed ring strain and an unfavorable intramolecular hydrogen bond, which is suggested to favor the formation of oligomers. These aspects of the reaction were supported by molecular mechanics calculations. 相似文献
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Substrate-based design of the first class of angiotensin-converting enzyme-related carboxypeptidase (ACE2) inhibitors 总被引:9,自引:0,他引:9
Dales NA Gould AE Brown JA Calderwood EF Guan B Minor CA Gavin JM Hales P Kaushik VK Stewart M Tummino PJ Vickers CS Ocain TD Patane MA 《Journal of the American Chemical Society》2002,124(40):11852-11853
Angiotensin-converting enzyme-related carboxypeptidase (ACE2) is a recently identified zinc metalloprotease with carboxypeptidase activity that was identified using our genomics platform. We implemented a rational design approach to identify potent and selective ACE2 inhibitors. To this end, picomolar inhibitors of ACE2 were designed and synthesized. 相似文献
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Yu. N. Khanin E. E. Vdovin L. Eaves A. Patane M. Henini 《Bulletin of the Russian Academy of Sciences: Physics》2007,71(8):1127-1129
Tunneling transport through a one-barrier GaAs/(AlGa)As/GaAs heterostructure containing self-assembled InAs quantum dots has been investigated at low temperatures. An anomalous increase in the tunneling current through quantum dots in magnetic fields oriented both parallel and perpendicular to the current is observed. This increase is a manifestation of the Fermi-edge singularity in the current as a result of the interaction of a tunneling electron with the electron gas in the emitter. 相似文献
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E. E. Vdovin Yu. N. Khanin A. V. Veretennikov A. Levin A. Patane Yu. V. Dubrovskii L. Eaves P. C. Main M. Henini G. Hill 《JETP Letters》2001,74(1):41-45
We present an experimental study of electron wave functions in InAs/GaAs self-assembled quantum dots by magnetotunneling spectroscopy. The electronic wave functions have a biaxial symmetry in the growth plane, with axes corresponding to the main crystallographic directions in the growth plane. Moreover, we observed the in-plane anisotropy of the subbands of the quantum well. 相似文献
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Alessandro De Robertis Concetta De Stefano Grazia Patane Silvio Sammartano 《Journal of solution chemistry》1993,22(10):927-940
Protonation constants of triethylenetetramine (trien) and tetraethylenepentamine (tetren) were determined, in NaCl aqueous solutions, at different ionic strengths, at 25°C, using the the pH-metric technique. The behavior of protonation constants as a function of ionic strength can be explained by a model which takes into account the formation of the species AH
q
Cl
p
[A=amine; q=1...4, p=1,2 (trien); q=1...5, p=1.3 (tetren)]. 相似文献
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