نتایج جستجو برای: Optical microscopy

تعداد نتایج: 442649  

Journal: :international journal of nano dimension 0
z. sobat catalysis and nanotechnology research division, research institute of petroleum industry, p. o. box: 1485733111, tehran, iran. s. sadegh hassani catalysis and nanotechnology research division, research institute of petroleum industry, p. o. box: 1485733111, tehran, iran.

scanning near-field optical microscopy (snom) is a member of scanning probe microscopes (spms) family which enables nanostructure investigation of the surfaces on a wide range of materials. in fact, snom combines the spm technology to the optical microscopy and in this way provide a powerful tool to study nano-structures with very high spatial resolution. in this paper, a qualified overview of ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1389

in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...

Journal: :journal of nanostructures 2015
m. ghiyasiyan-arani m. masjedi-arani m. salavati-niasari

copper vanadate nanostructures were prepared via ex-situ precipitation approach in presence of schiff-base ligand (n,n׳ -buthylenebis(acetylacetone iminato)dianion = acacbn) as a new capping agent. the effect of different cu sources and ph on the size, morphology and size distribution of copper vanadate nanostructures was investigated. the as-prepared products were characterized using x-ray dif...

S. Sadegh Hassani, Z. Sobat

Scanning Near-Field Optical Microscopy (SNOM) is a member of scanning probe microscopes (SPMs) family which enables nanostructure investigation of the surfaces on a wide range of materials. In fact, SNOM combines the SPM technology to the optical microscopy and in this way provide a powerful tool to study nano-structures with very high spatial resolution. In this paper, a qualified overview of ...

Journal: :Materials Today 2001

S. Sadegh Hassani, Z. Sobat

Scanning Near-Field Optical Microscopy (SNOM) is a member of scanning probe microscopes (SPMs) family which enables nanostructure investigation of the surfaces on a wide range of materials. In fact, SNOM combines the SPM technology to the optical microscopy and in this way provide a powerful tool to study nano-structures with very high spatial resolution. In this paper, a qualified overview of ...

1999
Michael W. Davidson Mortimer Abramowitz

binocular microscopes with image-erecting prisms, and the first stereomicroscope (14). Early in the twentieth century, microscope manufacturers began parfocalizing objectives, allowing the image to remain in focus when the microscopist exchanged objectives on the rotating nosepiece. In 1824, Zeiss introduced a LeChatelier-style metallograph with infinitycorrected optics, but this method of corr...

Journal: :journal of advanced materials and processing 0
mohamad javad eshraghi materials and energy research center nima naderi materials and energy research center

the effect of evaporation rate on structural, morphological and optical properties of electron beam evaporated cds thin films have been investigated. cds thin film deposited by electron beam evaporation method in 12nm/min and 60nm/min evaporation rates on glass substrates. x-ray diffraction, scanning electron microscopy, uv-vis-nir spectroscopy and atomic force microscopy were used to character...

Journal: :international journal of nano dimension 0
b. sathyaseelan department of physics, university college of engineering arni (a constituent college of anna university chennai) arni 632 317, tamilnadu, india. s. sambasivam department of physics, pukyong national university, busan-608 737, south korea. t. alagesan department of physics, presidency college, chennai 600 005, tamil nadu, india. k. sivakumar department of physics, anna university, chennai-600025, tamilnadu, india.

nanocrystalline particles of cerium oxide (ceo2) have been prepared by the chemical precipitation method using cerium nitrate and urea with a molar ratio of 1:2. the results revealed that the formation of ceo2 fine particles is influenced by molar ratio of metal nitrates to fuel. well faceted ceo2 nanoparticles, were synthesized by thermal-assisted dissociation method at reflux temperature in a...

Journal: :international journal of optics and photonics 0
jalil jafari no. 444, prof. yousef sobouti blvd. p. o. box 45195-1159 zanjan iran rahman nouroozi no. 444, prof. yousef sobouti blvd. p. o. box 45195-1159 zanjan iran

for a fiber optical surface plasmon resonance (spr) sensor a short part of its cladding should be removed to coat a thin layer of a metal. usually this is problematic when an optical fiber with small core diameter is used. in this paper, a new method using µliter droplet of the hf acid for short fiber optical taper fabrication is reported. using this method in a multi-mode optical fiber with th...

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