نتایج جستجو برای: cellulose nano crystal

تعداد نتایج: 236990  

2008
I. C. Khoo A. Diaz S. Kubo J. Liou Mike Stinger J. H. Park

We present an overview of recent results obtained in nano-dispersed nonlinear neat organic liquids and liquid crystals. Experimental observations confirm the enhancement of nonlinear absorption in gold nano-spheres doped neat nonlinear liquids and extension of the bandwidth of efficient all-optical switching operation for visible-near infrared lasers in time scales ranging from sub-picoseconds ...

2013
Koichi Baba Kohji Nishida

The Nano Spray Dryer B-90 offers a new, simple, and alternative approach for the production of drug nanocrystals. In this study, the preparation of steroid nanocrystals using the Nano Spray Dryer B-90 was demonstrated. The particle size was controlled by selecting the mesh aperture size. Submicrometer steroid particles in powder form were successfully obtained. These nanoparticles were confirme...

Journal: :international journal of nano dimension 0
sh. aghabeygi department of chemistry, islamic azad university, east tehran branch, qiamdasht, tehran, iran. m. zare-dehnavi department of chemistry, islamic azad university, east tehran branch, qiamdasht, tehran, iran.

nanocomposite of zro2/zno was prepared under ultrasonic irradiation by sol gel process from directly mixing zirconium and zinc gels. the mixture was placed under ultrasonic irradiation for 2 hours. after the aging time and filtration of the reaction mixture, the filtrated composite gel was calcinated at 500 °c for 3h in furnace. the precursor gels of zirconium and zinc were prepared from dissol...

Journal: :The Journal of the Society of Chemical Industry, Japan 1970

2008
Gloria Olivier Ken Marshall

Lyotropic liquid crystals based on mixtures of cellulose tricarbanilates (urethanes) generated stronger selective reflection in the visible range after an increase in concentration of approximately 9 wt.-% above the concentrations described by Miiller, Zentel, and Keller in "Solid Opalescent Films Originating from Urethanes of Cellulose".[2] The cellulose urethanes used were of a lower molecula...

Journal: :Nordic Pulp & Paper Research Journal 2014

2009
Yan Wang

Recently we proposed a periodic surface model to assist geometric construction in computer-aided nano-design. This implicit surface model helps create super-porous nano structures parametrically and support crystal packing. In this paper, we study construction methods of Minkowski sums for periodic surfaces. A numerical approximation approach based on the Chebyshev polynomials is developed and ...

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