Magneto-optical properties of an optically pumped medium

1968 ◽  
Vol 46 (16) ◽  
pp. 1753-1761 ◽  
Author(s):  
M. Verschueren
Keyword(s):  
Optical Properties ◽  
Radio Frequency ◽  
Optical Radiation ◽  
Index Of Refraction ◽  
Optically Pumped ◽  
Frequency Shifts ◽  
Radio Frequency Radiation ◽  
Resonance Frequencies ◽  
Frequency Radiation ◽  
Complex Index Of Refraction

The magneto-optical properties of a system subject to an optical and a radio-frequency radiation are calculated. The frequency of both radiations is close to the resonance frequencies of the system and as such they have a strong effect on its properties. The frequency shifts induced by optical radiation are obtained. Relations between the complex index of refraction and the frequency shifts are discussed.

Health Risks of Electromagnetic Fields. Part II: Evaluation and Assessment of Radio Frequency Radiation

2003 ◽  
Vol 31 (3) ◽  
pp. 197-254 ◽  
Author(s):  
Riadh W. Y. Habash ◽  
Lynn M. Brodsky ◽  
William Leiss ◽  
Daniel Krewski ◽  
Michael Repacholi
Keyword(s):  
Radio Frequency ◽  
Electromagnetic Fields ◽  
Health Risks ◽  
Radio Frequency Radiation ◽  
Frequency Radiation ◽  
Evaluation And Assessment

Nonmonotonic superconducting transitions in mesoscopic Al structures induced by radio-frequency radiation

1996 ◽  
Vol 53 (17) ◽  
pp. 11332-11335 ◽  
Author(s):  
C. Strunk ◽  
V. Bruyndoncx ◽  
C. Van Haesendonck ◽  
V. V. Moshchalkov ◽  
Y. Bruynseraede ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Radiation ◽  
Frequency Radiation ◽  
Superconducting Transitions

scholarly journals Analysis of the Cellular Stress Response in MCF10A Cells Exposed to Combined Radio Frequency Radiation

2012 ◽  
Vol 53 (2) ◽  
pp. 176-183 ◽  
Author(s):  
Han-Na KIM ◽  
Na-Kyung HAN ◽  
Mi-Na HONG ◽  
Sung-Gil CHI ◽  
Yun-Sil LEE ◽  
...  
Keyword(s):  
Stress Response ◽  
Radio Frequency ◽  
Cellular Stress ◽  
Cellular Stress Response ◽  
Radio Frequency Radiation ◽  
Mcf10a Cells ◽  
Frequency Radiation

Optical properties of amorphous hydrogenated carbon films: A spectroscopic ellipsometry study

1987 ◽  
Vol 2 (5) ◽  
pp. 645-647 ◽  
Author(s):  
Shuhan Lin ◽  
Shuguang Chen
Keyword(s):  
Optical Properties ◽  
Spectroscopic Ellipsometry ◽  
Carbon Films ◽  
Index Of Refraction ◽  
The Real ◽  
Complex Index ◽  
Tentative Explanation ◽  
Amorphous Hydrogenated Carbon ◽  
Ellipsometry Data ◽  
Complex Index Of Refraction

Optical properties of plasma-deposited amorphous hydrogenated carbon films were studied by spectroscopic ellipsometry. From the ellipsometry data, the real and imaginary parts, n and k, of the complex index of refraction of the film have been deduced for photon energies between 2.0 and 4.0 eV for as-grown as well as for thermally annealed films. Here n and k showed considerable variation with subsequent annealing, even under 400°C. A tentative explanation of the results is proposed.

Volumetric fusion of graphite-doped nylon 12 powder with radio frequency radiation

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Jared Allison ◽  
John Pearce ◽  
Joseph Beaman ◽  
Carolyn Seepersad
Keyword(s):  
Radio Frequency ◽  
Rf Heating ◽  
Thermoplastic Polymers ◽  
Content Type ◽  
Plate Electrode ◽  
Radio Frequency Radiation ◽  
Powder Bed ◽  
Nylon 12 ◽  
Electrode Chamber ◽  
Frequency Radiation

Purpose Additive manufacturing (AM) of thermoplastic polymers for powder bed fusion processes typically requires each layer to be fused before the next can be deposited. The purpose of this paper is to present a volumetric AM method in the form of deeply penetrating radio frequency (RF) radiation to improve the speed of the process and the mechanical properties of the polymer parts. Design/methodology/approach The focus of this study was to demonstrate the volumetric fusion of composite mixtures containing polyamide (nylon) 12 and graphite powders using RF radiation as the sole energy source to establish the feasibility of a volumetric AM process for thermoplastic polymers. Impedance spectroscopy was used to measure the dielectric properties of the mixtures as a function of increasing graphite content and identify the percolation limit. The mixtures were then tested in a parallel plate electrode chamber connected to an RF generator to measure the heating effectiveness of different graphite concentrations. During the experiments, the surface temperature of the doped mixtures was monitored. Findings Nylon 12 mixtures containing between 10% and 60% graphite by weight were created, and the loss tangent reached a maximum of 35%. Selective RF heating was shown through the formation of fused composite parts within the powder beds. Originality/value The feasibility of a novel volumetric AM process for thermoplastic polymers was demonstrated in this study, in which RF radiation was used to achieve fusion in graphite-doped nylon powders.

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