The optical rotation of vicinal dibromides

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

Step-Induced Optical Anisotropy of Vicinal Si(001)

It is demonstrated, using reflectance difference spectroscopy, scanning tunneling microscopy, and low-energy electron diffraction, combined with deliberate straining of the surface, that the presence of atomic steps dramatically changes the optical anisotropy of the Si(001) surface. The step-induced reflectance difference signal originates predominately from rebonded steps and is comparable in ...

Optical rotation of mitochondrial membranes.

Several papers have appeared recently in which optical rotation data were used to study the structure of membranes. 1-3 The optical rotatory dispersion curves for erythrocyte membranes2 and for plasma membranes of Ehrlich ascites carcinoma1 are reported to be of the general form corresponding to an a-helix with minor but significant differences. The trough, normally found at 233 m,4 for model p...

Optical Vortices, Faraday Rotation, Optical Activity

Characteristic solutions to Maxwell's equations, constrained to equivalence classes by constitutive equations that have certain crystal symmetries, are represented by phase 1-forms, k, such that both 3-forms vanish: k^F = 0 and k^G = 0: Simple examples are given which show the di®erences between Faraday rotation where the 3-form of Topological Torsion is not zero, A^F 6= 0, and Optical Activity...

Circular Dichroism and Optical Rotation?