نتایج جستجو برای: microwave spectroscopy

تعداد نتایج: 220219  

In this paper, polymer-based nanocomposites powder were applied on the surface of plain carbon steel by electrostatic device and then were cured by microwave. The effect of adding nanoparticles on the corrosion resistance properties of the coatings was investigated by Electrochemical Impedance Spectroscopy and immersion test in 3.5 NaCl solution. Coatings structure and morphology of nanoparticl...

2017
Kirill Prozument

I am developing a new program to use microwave and millimeter-wave rotational spectroscopy to probe stable and reactive species relevant to combustion chemistry, and to use this capability to study reaction dynamics and kinetics. Rotational spectroscopy is known for its unsurpassed resolution and precision in determining molecular structure. The program will be based on chirped-pulse Fourier tr...

This paper reports the synthesis and characterization of photocatalyst CdS nanoparticles for investigation of photocatalytic degradation of 2,4,6-trichlorophenol. CdS nanoparticles were synthesized by the microwave-assisted sol-gel method and characterized by various techniques such as X-ray diffraction, filed emission scanning electron microscopy, energy dispersive spectroscopy, Fourier transf...

2017
Daniela Nunes Ana Pimentel Lidia Santos Pedro Barquinha Elvira Fortunato Alberto Naldoni

In the present study, titanium dioxide nanostructures were synthesized through microwave irradiation. In a typical microwave synthesis, nanorod spheres in the powder form were simultaneously produced with nanorod arrays grown on polyethylene terephthalate (PET) substrates. The syntheses were performed in water or ethanol with limited temperature at 80 ◦C and 200 ◦C. A simple and low-cost approa...

2013
Ana P. de Moura Larissa H. de Oliveira Paula F. S. Pereira Ieda L. V. Rosa Máximo S. Li Elson Longo José A. Varela

A simple way to prepare and -CoMoO4 nanorods is reported in this paper. CoMoO4·xH2O nanorod precursors were obtained using the microwave-assisted hydrothermal (MAH) method. By annealing the as-prepared CoMoO4·xH2O precursor at 600 ̊C for 10 min in a domestic microwave oven, and -CoMoO4 nanorods were prepared. These powders were analyzed by X-ray diffraction (XRD), field emission scanning ele...

Journal: :Physical review letters 2004
K Afrousheh P Bohlouli-Zanjani D Vagale A Mugford M Fedorov J D D Martin

Resonant electric dipole-dipole interactions between cold Rydberg atoms were observed using microwave spectroscopy. Laser-cooled 85Rb atoms in a magneto-optical trap were optically excited to 45d(5/2) Rydberg states using a pulsed laser. A microwave pulse transferred a fraction of these Rydberg atoms to the 46p(3/2) state. A second microwave pulse then drove atoms in the 45d(5/2) state to the 4...

2004
Youngjae Yoo Geun-Hye Hong Kil-Yeong Choi Jae Heung Lee

As a peculiar and powerful energy source, microwave has been widely applied to optimize and accelerate the chemical reaction. As an alternative to conventional heating techniques, microwave irradiation provides an effective, selective and fast synthetic method by heating the molecules directly through the interaction between the microwave energy and molecular dipole moments of the monomers. Thi...

Journal: :The Review of scientific instruments 2012
Camillo Stefanucci Thejesh Bandi Francesco Merli Matthieu Pellaton Christoph Affolderbach Gaetano Mileti Anja K Skrivervik

The design, realization, and characterization of a compact magnetron-type microwave cavity operating with a TE(011)-like mode are presented. The resonator works at the rubidium hyperfine ground-state frequency (i.e., 6.835 GHz) by accommodating a glass cell of 25 mm diameter containing rubidium vapor. Its design analysis demonstrates the limitation of the loop-gap resonator lumped model when ta...

2011
Martina Leins Andreas Schulz Matthias Walker Uwe Schumacher Ulrich Stroth

Microwave plasma sources at atmospheric pressure have a variety of different applications and therefore are object of intense research. This paper covers the spectroscopic investigation of an atmospheric pressure microwave plasma torch and experiments concerning the abatement of the perfluorinated compounds CF4 and SF6. By means of optical emission spectroscopy the gas temperature of a humid ai...

2011
L.R. Schreiber F.R. Braakman T. Meunier V. Calado J. Danon J.M. Taylor W. Wegscheider L.M.K. Vandersypen

Artificial molecules containing just one or two electrons provide a powerful platform for studies of orbital and spin quantum dynamics in nanoscale devices. A well-known example of these dynamics is tunnelling of electrons between two coupled quantum dots triggered by microwave irradiation. So far, these tunnelling processes have b...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید