نتایج جستجو برای: visible and ultraviolet spectrometers

تعداد نتایج: 16844006  

2014
Y. Bai

Silicon-based hybrid CMOS visible focal plane array (FPA) technology is emerging as a strong contender for scientific applications that require broad spectral response with low noise, highly integrated functionality and radiation hardness. CMOS-based FPAs offer many advantages in high speed, low-noise detection and signal processing. As a high performance alternative to advanced CCD imaging arr...

Journal: :Journal of Molecular Spectroscopy 2019

جلیلی, حامد, رضوانی, عبدالحسین , سروعلیشاه, حمید , فخرائیان, حسین ,

Addition of EDTA to the KDP solution is an effective method to increase the stability zone and the crystal growth rate. EDTA neutralizes the chemical activity of metal ions impurity such as Al+3, Fe+3, Cr+3 (that exist in the chemical materials as impurity). Effect of Al+3, Fe+3, Cr+3 ions on the KDP crystal is investigated. Growth method was based on the “point seed” method following spontaneo...

2014
Olle Håstad Anders Ödeen Chris Elphick

Billions of birds are estimated to be killed in window collisions every year, worldwide. A popular solution to this problem may lie in marking the glass with ultraviolet reflective or absorbing patterns, which the birds, but not humans, would see. Elegant as this remedy may seem at first glance, few of its proponents have taken into consideration how stark the contrasts between ultraviolet and ...

Journal: :Optics express 2009
Babak Momeni Ehsan Shah Hosseini Ali Adibi

We demonstrate the feasibility of forming a compact integrated photonic spectrometer for operation in the visible wavelength range using the dispersive properties of a planar photonic crystal structure fabricated in silicon nitride. High wavelength resolution and compact device sizes in these spectrometers are enabled by combining superprism effect, negative diffraction effect, and negative ref...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2003
E R Kieft J J A M van der Mullen G M W Kroesen V Banine

A pinhole camera, an extreme ultraviolet (EUV) spectrometer, a fast gatable multichannel plate EUV detector, and a digital camera have been installed on the ASML EUV laboratory setup to perform time-resolved pinhole imaging and EUV spectroscopy on a copy of the Philips EUV hollow cathode discharge plasma source. The main properties of the setup have been characterized. Time-resolved measurement...

Journal: :journal of nanostructures 2015
m. behpour m. mehrzad s. m. hosseinpour-mashkani

in this research, the thin films of n-s doped titanium dioxide (tio2) were successfully prepared by simple sol-gel method in the presence of tetrabutylorthotitanate as a starting reagent. furthermore, titanium dioxide (tio2) was functionalized with thiourea. furthermore, n-s doped titanium dioxides (nsto) were fixed on glass balls by glass balls fixed-bed reactor system. besides, the effect of ...

Journal: :journal of nanostructures 2016
y. mortazavi s. m. ghoreishi

in this work we synthesized of mesoporous silica nanoparticles and functionalized with 3-aminopropyltriethoxysilane to improve the loading and release of ibuprofen bonded to 3-aminopropyltriethoxysilane. sample were characterized by fourier transform infrared spectroscopy, scanning electron microscopy , x-ray diffraction, and ultraviolet-visible. the fourier transform infrared spectroscopy resu...

Journal: :Soil 2022

Abstract. Mining can cause severe disturbances to the soil, which underpins viability of terrestrial ecosystems. Post-mining rehabilitation relies on measuring soil properties that are critical indicators health. Soil visible–near-infrared (vis–NIR) spectroscopy is rapid, accurate, and cost-effective for estimating a range properties. Recent advances in infrared detectors microelectromechanical...

Journal: :The Analyst 2014
Bruno Bellina Jeffery M Brown Jakub Ujma Paul Murray Kevin Giles Michael Morris Isabelle Compagnon Perdita E Barran

An ion mobility mass spectrometer has been modified to allow optical interrogation of ions with different mass-to-charge (m/z) ratios and/or mobilities (K). An ion gating and trapping procedure has been developed which allows us to store ions for several seconds enabling UV photodissociation (UVPD).

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