scholarly journals Laser‐Heated Drawing of Syndiotactic Polystyrene Fiber

2015 ◽  
Vol 71 (10) ◽  
pp. 310-316 ◽  
Author(s):  
Tatsuya Himeno ◽  
Toshifumi Ikaga ◽  
Yutaka Ohkoshi ◽  
Kyoung Hou Kim ◽  
Takeharu Tajima ◽  
...  
Keyword(s):  
Syndiotactic Polystyrene ◽  
Laser Heated

scholarly journals Nanofiber and Nanofiber Powder of Syndiotactic Polystyrene Fabricated by Laser-Heated Drawing of Sea-Island-Type Conjugated-Spun Fiber

2018 ◽  
Vol 74 (8) ◽  
pp. 186-195
Author(s):  
Risa Yasoshima ◽  
Takeharu Tajima ◽  
Hideaki Yamaguchi ◽  
Toshifumi Ikaga ◽  
Yutaka Ohkoshi ◽  
...  
Keyword(s):  
Syndiotactic Polystyrene ◽  
Island Type ◽  
Spun Fiber ◽  
Laser Heated

scholarly journals Fiber Structure Development of Syndiotactic Polystyrene after Necking during the Laser-Heated Drawing Process

2017 ◽  
Vol 73 (7) ◽  
pp. 158-169 ◽  
Author(s):  
Gaku Matsuno ◽  
Toshifumi Ikaga ◽  
Kyoung-Hou Kim ◽  
Yutaka Ohkoshi ◽  
Takeharu Tajima ◽  
...  
Keyword(s):  
Syndiotactic Polystyrene ◽  
Drawing Process ◽  
Fiber Structure ◽  
Structure Development ◽  
Laser Heated

scholarly journals Study of multicharged heavy ion generation from CO2 laser-produced plasma

1996 ◽  
Vol 14 (3) ◽  
pp. 347-368 ◽  
Author(s):  
V.Yu. Baranov ◽  
K.N. Makarov ◽  
V.C. Roerich ◽  
Yu.A. Satov ◽  
A.N. Starostin ◽  
...  
Keyword(s):  
Hadron Collider ◽  
Laser System ◽  
Heavy Ion ◽  
Ion Source ◽  
Lead Ion ◽  
Ion Generation ◽  
Wavelength Radiation ◽  
Laser Heated ◽  
Work Done ◽  
Power Densities

The results of lead ion generation with charge state from Pb10+ to Pb35+ from laser-heated plasma are presented. CO2 lasers producing 10.6-μm wavelength radiation at power densities in the range 4.1011-6.1014 W/cm2 in TBKI and CERN were used. Results of detailed numerical simulations presented in the paper are in good agreement with the experimental data. Work done in collaboration with CERN, ITEP, and TBKI was aimed at the specification of requirements for a laser system that will be able to drive an ion source for the hadron collider (LHC) at CERN.

scholarly journals Laser Floating Zone Growth: Overview, Singular Materials, Broad Applications, and Future Perspectives

Crystals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 38
Author(s):  
Francisco Rey-García ◽  
Rafael Ibáñez ◽  
Luis Alberto Angurel ◽  
Florinda M. Costa ◽  
Germán F. de la Fuente
Keyword(s):  
Equilibrium Phase ◽  
Polycrystalline Materials ◽  
Floating Zone ◽  
High Crystalline Quality ◽  
Experimental Parameters ◽  
Phase Selectivity ◽  
Oriented Polycrystalline ◽  
Laser Heated ◽  
Lfz Technique ◽  
Zone Growth

The Laser Floating Zone (LFZ) technique, also known as Laser-Heated Pedestal Growth (LHPG), has been developed throughout the last several decades as a simple, fast, and crucible-free method for growing high-crystalline-quality materials, particularly when compared to the more conventional Verneuil, Bridgman–Stockbarger, and Czochralski methods. Multiple worldwide efforts have, over the years, enabled the growth of highly oriented polycrystalline and single-crystal high-melting materials. This work attempted to critically review the most representative advancements in LFZ apparatus and experimental parameters that enable the growth of high-quality polycrystalline materials and single crystals, along with the most commonly produced materials and their relevant physical properties. Emphasis will be given to materials for photonics and optics, as well as for electrical applications, particularly superconducting and thermoelectric materials, and to the growth of metastable phases. Concomitantly, an analysis was carried out on how LFZ may contribute to further understanding equilibrium vs. non-equilibrium phase selectivity, as well as its potential to achieve or contribute to future developments in the growth of crystals for emerging applications.

Anisotropic Guest Diffusion in the δ Crystalline Host Phase of Syndiotactic Polystyrene:  Transport Kinetics in Films with Three Different Uniplanar Orientations of the Host Phase

2006 ◽  
Vol 18 (9) ◽  
pp. 2205-2210 ◽  
Author(s):  
Vincenzo Venditto ◽  
Anna De Girolamo Del Mauro ◽  
Giuseppe Mensitieri ◽  
Giuseppe Milano ◽  
Pellegrino Musto ◽  
...  
Keyword(s):  
Transport Kinetics ◽  
Syndiotactic Polystyrene

Transient Temperature During the Vaporization of Liquid on a Pulsed Laser-Heated Solid Surface

1996 ◽  
Vol 118 (3) ◽  
pp. 702-708 ◽  
Author(s):  
H. K. Park ◽  
X. Zhang ◽  
C. P. Grigoropoulos ◽  
C. C. Poon ◽  
A. C. Tam
Keyword(s):  
Thin Film ◽  
Solid Surface ◽  
Elevated Temperatures ◽  
Bubble Nucleation ◽  
Transient Temperature ◽  
Specular Reflectance ◽  
Transient Temperature Field ◽  
Excimer Laser Pulse ◽  
Nanosecond Time Resolution ◽  
Laser Heated

The thermodynamics of the rapid vaporization of a liquid on a solid surface heated by an excimer laser pulse is studied experimentally. The transient temperature field is measured by monitoring the photothermal reflectance of an embedded thin film in nanosecond time resolution. The transient reflectivity is calibrated by considering a temperature gradient across the sample based on the static measurements of the thin film optical properties at elevated temperatures. The dynamics of bubble nucleation, growth, and collapse is detected by probing the optical specular reflectance. The metastability behavior of the liquid and the criterion for the onset of liquid–vapor phase transition in nanosecond time scale are obtained quantitatively for the first time.

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