Bacteriorhodopsin oriented in polyvinyl alcohol films as an erasable optical storage medium.
نویسندگان
چکیده
Films of oriented bacteriorhodopsin have been formed in polyvinyl alcohol with excellent optical quality. Images with high contrast have been impressed and erased on these films. Second-harmonic microscopy has been used to read the image on a bacteriorhodopsin-polyvinyl alcohol film without erasure. The potential of these films for molecular information storage and computation is discussed.
منابع مشابه
Structural and Optical Properties of polyvinyl alcohol doped silver ( PVA :Ag) film
The present paper investigates a detailed study on the optical properties of PVA/Ag nanocomposite films. In this interest , PVA/Ag nanocomposites with different ways of study ,the first prepared film by reduction 0.2M of Ag+ ions in 2 gm of PVA and study the transmission , absorption coefficient, refractive index, extinction coefficient, reflection, real & imaginary part of the dielectric const...
متن کاملSynthesis and characterization of Polyvinyl Alcohol-Polypyrrole-Silver nanocomposite polymer films
The present paper describes the preparation and characterization of Polyvinyl Alcohol-Polypyrrole-Silver Nanocomposite (PVA-PPy-Ag NC) films. The prepared films were conducting, freestanding, flexible, and robust. Silver nanoparticles (Ag NPs) were synthesized from an aqueous solution of silver nitrate using trisodium citrate as a reductant. The casting solution for the films was prepared by in...
متن کامل1 Phenomenological Characterization of Bacteriorhodopsin – D 85 N Photocycle
An operational characterization of the molecular photocycle of a genetic variant of bacteriorhodopsin, BR–D85N, is presented. Steady-state bleach spectra and pump–probe absorbance data are obtained with thick hydrated films containing BR–D85N embedded in a gelatin host. Simple twoand three-state models are used to analyze the photocycle dynamics and extract relevant information such as pure-sta...
متن کاملInvestigation of Electrical and Optical Characteristics of Nanohybride Composite (Polyvinyl Alcohol / Nickel Oxide)
Some issues; leakage, tunneling currents, boron diffusion are threatening SiO2 to be used as a good gate dielectric for the future of the CMOS (complementary metal- oxide- semiconductor) transistors. For finding an alternative and novel gate dielectric, the NiO (Nickel oxide) and PVA (polyvinyl alcohol) nano powders were synthesized with the sol-gel method and their nano structural p...
متن کاملChitosan and polyvinyl alcohol composite films containing nitrofurazone: preparation and evaluation
Objective(s): The aim of this study was to insert nitrofurazone in a chitosan membrane to be used as a wound dressing. Materials and Methods: Several blend films using chitosan (Cs) and polyvinyl alcohol (PVA), containing nitrofurazone were prepared by means of casting/solvent evaporating technique. Different characteristics such as mechanical properties, water vapor transmission rate...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Applied optics
دوره 30 35 شماره
صفحات -
تاریخ انتشار 1991