نتایج جستجو برای: near infra red spectroscopy

تعداد نتایج: 554172  

Journal: :Optics express 2011
Joseph Kerckhoff Michael A Armen Dmitri S Pavlichin Hideo Mabuchi

We use a single 133Cs atom strongly coupled to an optical resonator to induce random binary phase modulation of a near infra-red, ∼ 500 pW laser beam, with each modulation edge caused by the dissipation of a single photon (≈ 0.23 aJ) by the atom. While our ability to deterministically induce phase edges with an additional optical control beam is limited thus far, theoretical analysis of an anal...

Journal: :Optics express 2009
J-B Trebbia H Ruf Ph Tamarat B Lounis

Using the zero-phonon line (ZPL) emission of a single molecule, we realized a triggered source of near-infra-red (lambda = 785 nm) single photons at a high repetition rate. A Weierstrass solid immersion lens is used to image single molecules with an optical resolution of 300 nm (approximately 0.4lambda) and a high collection efficiency. Because dephasing of the transition dipole due to phonons ...

2007
Jeong-Ho Lyu Seok Choi Jae Heon Choi Hyun Nam Bok Jung

Abstract The CMOS image sensor having VIPS(Vertically Integrated Photodiode Structure) was fabricated for the first time. By adding the high energy(~3MeV) ion implantation to the conventional CIS(CMOS Image Sensor) process, it was verified that the deep photo diode was successfully formed under the normal photodiode on a pixel. And it was observed that this image sensor can detect the visual im...

Journal: :Optics express 2012
C Garcia V Coello Z Han I P Radko S I Bozhevolnyi

We report on the fabrication and characterization of straight dielectric-loaded surface plasmon polaritons waveguides doped with lead-sulfide quantum dots as a near infra-red gain medium. A loss compensation of ~33% (an optical gain of ~143 cm⁻¹) was observed in the guided mode. The mode propagation, coupling efficiency and stimulated emission were characterized using leakage radiation microsco...

2013
Claire WA Pennekamp Rogier V Immink Wolfgang F Buhre Frans L Moll Gert Jan de Borst

BACKGROUND Intraoperative arterial hypotension can lead to severe complications in patients undergoing carotid endarterectomy, in particular if cerebral auto-regulation is impaired. Short-acting agents, such as phenylephrine or ephedrine, commonly used to correct intra-operative hypotension, have different hemodynamic effects. Recently, it was reported that, in healthy anesthetized subjects wit...

Journal: :iranian journal of pharmaceutical sciences 0
sedigheh joughehdoust islamic azad university, science and research branch, biomedical engineering faculty and young research club, tehran, iran aliasghar behnamghader material and energy research center, tehran, iran abdollah afshar department of material science and engineering, sharif university of technology, tehran, iran

in this investigation, fluor-hydroxyapatite (fha) film was deposited on a titanium substrate by sol-gel method. triethyl phosphite, ammonium fluoride and calcium nitrate in ethanol solutions were used respectively as p, f and ca precursors. typical apatite structures were obtained for all coatings after dipping and subsequent heat treatment at 550, 700 and 800 ºc, the coating layers were invest...

Journal: :iranian journal of pharmaceutical research 0
martins emeje department of pharmaceutical technology and raw materials development, national institute for pharmaceutical research and development, idu, p.m.b.21 garki-abuja, nigeria. christiana isimi department of pharmaceutical technology and raw materials development, national institute for pharmaceutical research and development, idu, p.m.b.21 garki-abuja, nigeria. stephen byrn department of medicinal chemistry and physical pharmacy, purdue university, indiana, usa. joseph fortunak department of chemistry, howard university, usa. olobayo kunle department of pharmaceutical technology and raw materials development, national institute for pharmaceutical research and development, idu, p.m.b.21 garki-abuja, nigeria. sabinus ofoefule department of pharmaceutical technology and industrial pharmacy university of nigeria, nsukka, enugu state, nigeria.

this paper is the first multi-scale characterization of the fluidize-dried gum extracted from the fresh fruits of the plant abelmoschus esculentus. it describes the physical, thermal, sorptional and functional properties of this natural gum. elemental analysis, scanning electron microscopy (sem), particle size analysis, x-ray powder diffraction (xprd), thermo-gravimetric analysis (tga), differe...

Journal: :international journal of nano dimension 0
j. roul university department of pharmaceutical sciences, utkal university, bhubaneswar, odisha, india. s. k. sahoo university department of pharmaceutical sciences, utkal university, bhubaneswar, odisha, india. r. mohapatra university department of pharmaceutical sciences, utkal university, bhubaneswar, odisha, india.

this paper discusses about preparation of biodegradable polymer /clay nanocomposites based on organically modified montmorillonite clay; i.e. cloisite 10a and biodegradable polymer chitosan by solution mixing technique and their characterization. the nanocomposites were successfully prepared and their structures were characterized by powder x-ray diffraction (xrd), particle size analyzer (beckm...

Journal: :international journal of nano dimension 0
d. durgavijaykarthik pg and research centre of physics, vhnsn college, virudhunagar – 626001, tamilnadu, india. m. kirithika department of microbiology, vhnsn college, virudhunagar – 626001, tamilnadu, india. n. prithivikumaran pg and research centre of physics, vhnsn college, virudhunagar – 626001, tamilnadu, india. n. jeyakumaran pg and research centre of physics, vhnsn college, virudhunagar – 626001, tamilnadu, india.

cadmium oxide (cdo) nanoparticles were prepared by precipitation method using cadmium acetate and ammonia solution. presence of chemical species, were verified by fourier transform infra red (ftir) spectrum. from x-ray diffraction (xrd) spectrum the particle size, d-spacing value and structure of the nanoparticle were analysed. size of the nanoparticles and the elemental composition were detect...

Journal: :journal of nanostructures 2014
s. m. seyedahmadian m. ghasemnejadesfahlan

spherical granules of the superionic conductor β/β́ lizr2(po4)3 in the range of sub 100 nm sizewere synthesizedvia freeze drying methodand fully reviewed in all aspects. samples were characterized by the x-ray diffractometry (xrd), the thermal analysis (tg, dsc), thefourier transform infra-red spectroscopy (ftir) and the scanning electron microscopy (sem).their structuredepends largely on the me...

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