Comparative study of in-situ temperature measurement during microwave-assisted compression-molding and conventionally compression-molding process

2021 ◽  
Vol 35 ◽  
pp. 336-345
Author(s):  
Nishant Verma ◽  
Manoj Kumar Singh ◽  
Sunny Zafar ◽  
Himanshu Pathak
Keyword(s):  
Comparative Study ◽  
Temperature Measurement ◽  
Compression Molding ◽  
Molding Process ◽  
Microwave Assisted

Automation of Fluorescence In Situ Hybridization Pretreatment: A Comparative Study of Different Sample Types

2000 ◽  
Vol 5 (3) ◽  
pp. 209-220 ◽  
Author(s):  
KRISTINE JACOBSON ◽  
ANTHONY THOMPSON ◽  
GERRY BROWNE ◽  
CHRISTINA SHASSERRE ◽  
STEVEN A. SEELIG ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Comparative Study ◽  
Fluorescence In Situ Hybridization

scholarly journals Simultaneously controlling heat conduction and infrared absorption with a textured dielectric film to enhance the performance of thermopiles

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Yunqian He ◽  
Yuelin Wang ◽  
Tie Li
Keyword(s):  
Heat Conduction ◽  
Infrared Absorption ◽  
High Performance ◽  
Performance Enhancement ◽  
Dielectric Film ◽  
Great Influence ◽  
Thermal Conductance ◽  
Molding Process ◽  
Absorption Properties

AbstractThe heat conduction and infrared absorption properties of the dielectric film have a great influence on the thermopile performance. Thinning the dielectric film, reducing its contact area with the silicon substrate, or adding high-absorptivity nanomaterials has been proven to be effective in improving thermopiles. However, these methods may result in a decrease in the structural mechanical strength and increases in the fabrication complexity and cost. In this work, a new performance-enhancement strategy for thermopiles by simultaneously controlling the heat conduction and infrared absorption with a TExtured DIelectric (TEDI) film is developed and presented. The TEDI film is formed in situ by a simple hard-molding process that is compatible with the fabrication of traditional thermopiles. Compared to the control FLat DIelectric (FLDI) film, the intrinsic thermal conductance of the TEDI film can be reduced by ~18–30%, while the infrared absorption can be increased by ~7–13%. Correspondingly, the responsivity and detectivity of the fabricated TEDI film-based thermopile can be significantly enhanced by ~38–64%. An optimized TEDI film-based thermopile has achieved a responsivity of 156.89 V·W−1 and a detectivity of 2.16 × 108 cm·Hz1/2·W−1, while the response time constant can remain <12 ms. These results exhibit the great potential of using this strategy to develop high-performance thermopiles and enhance other sensors with heat transfer and/or infrared absorption mechanisms.

Comparative study of MoS2 and Co/MoS2 catalysts prepared by ex situ/in situ activation of ammonium and tetraalkylammonium thiomolybdates

2004 ◽  
Vol 210 (1-2) ◽  
pp. 105-117 ◽  
Author(s):  
L. Alvarez ◽  
J. Espino ◽  
C. Ornelas ◽  
J.L. Rico ◽  
M.T. Cortez ◽  
...  
Keyword(s):  
Comparative Study ◽  
Ex Situ ◽  
In Situ Activation ◽  
Mos2 Catalysts

scholarly journals Interaction of Poly L-Lactide and Tungsten Disulfide Nanotubes Studied by in Situ X-ray Scattering during Expansion of PLLA/WS2NT Nanocomposite Tubes

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1764
Author(s):  
Lison Rocher ◽  
Andrew S. Ylitalo ◽  
Tiziana Di Luccio ◽  
Riccardo Miscioscia ◽  
Giovanni De Filippo ◽  
...  
Keyword(s):  
Extrusion Direction ◽  
Tungsten Disulfide ◽  
Molding Process ◽  
X Ray ◽  
X Ray Scattering ◽  
Polymer Crystals ◽  
Neat Plla ◽  
Tube Expansion ◽  
Ray Scattering

In situ synchrotron X-ray scattering was used to reveal the transient microstructure of poly(L-lactide) (PLLA)/tungsten disulfide inorganic nanotubes (WS2NTs) nanocomposites. This microstructure is formed during the blow molding process (“tube expansion”) of an extruded polymer tube, an important step in the manufacturing of PLLA-based bioresorbable vascular scaffolds (BVS). A fundamental understanding of how such a microstructure develops during processing is relevant to two unmet needs in PLLA-based BVS: increasing strength to enable thinner devices and improving radiopacity to enable imaging during implantation. Here, we focus on how the flow generated during tube expansion affects the orientation of the WS2NTs and the formation of polymer crystals by comparing neat PLLA and nanocomposite tubes under different expansion conditions. Surprisingly, the WS2NTs remain oriented along the extrusion direction despite significant strain in the transverse direction while the PLLA crystals (c-axis) form along the circumferential direction of the tube. Although WS2NTs promote the nucleation of PLLA crystals in nanocomposite tubes, crystallization proceeds with largely the same orientation as in neat PLLA tubes. We suggest that the reason for the unusual independence of the orientations of the nanotubes and polymer crystals stems from the favorable interaction between PLLA and WS2NTs. This favorable interaction leads WS2NTs to disperse well in PLLA and strongly orient along the axis of the PLLA tube during extrusion. As a consequence, the nanotubes are aligned orthogonally to the circumferential stretching direction, which appears to decouple the orientations of PLLA crystals and WS2NTs.

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