Microfabrication of high aspect ratio BST pillar arrays by epoxy gel casting from aqueous suspensions with added water soluble epoxy resin

2014 ◽  
Vol 60 ◽  
pp. 830-837 ◽  
Author(s):  
S.M. Olhero ◽  
A. Kaushal ◽  
P. Antunes ◽  
J.M.F. Ferreira
Keyword(s):  
Aspect Ratio ◽  
Epoxy Resin ◽  
High Aspect Ratio ◽  
Water Soluble ◽  
Aqueous Suspensions ◽  
Gel Casting ◽  
Pillar Arrays ◽  
Added Water

Radiolytic Synthesis of Bimetallic Nanoparticles with High Aspect Ratio

2002 ◽  
Vol 740 ◽  
Author(s):  
C. M. Doudna ◽  
M. F. Bertino ◽  
S. Pillalamarri ◽  
F. D. Blum ◽  
A. T. Tokuhiro ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Bimetallic Nanoparticles ◽  
Water Soluble ◽  
Face Centered Cubic ◽  
Radiation Dose Rate ◽  
Water Soluble Polymer ◽  
Transmission Electron ◽  
Counter Ions ◽  
Face Centered

ABSTRACTWe present a technique to synthesize high aspect ratio metallic nanostructures based on the radiolysis method. In our experiments, we use gamma rays to irradiate aqueous solutions containing Ag and Pt ions and a water-soluble polymer. The aspect ratio of the nanoparticles is controlled by varying the radiation dose rate, the type of polymer, and the type of counter ions. Transmission electron microscopy shows that wire-like structures composed of grains with a face centered cubic (fcc) structure can be formed with a length of up to 3.5μm and typical diameters between 5 and 12nm. X-Ray absorption spectroscopy shows that Ag and Pt do not form an alloy, but remain segregated.

scholarly journals Microfabrication of High-Aspect Ratio KNN Lead-Free Piezoceramic Pillar Arrays by Aqueous Gelcasting

Ceramics ◽  
2020 ◽  
Vol 3 (3) ◽  
pp. 287-296
Author(s):  
Cailing Wu ◽  
Benke Li ◽  
Xiaofeng Wang ◽  
Feng Ji ◽  
Dou Zhang ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Lead Free ◽  
Solid Loading ◽  
High Mechanical Strength ◽  
Pillar Array ◽  
Novel Approach ◽  
Pillar Arrays ◽  
Gelcasting Process

The present paper reported a novel approach for the fabrication of a high-aspect ratio (K, Na)NbO3 (KNN) piezoelectric micropillar array via epoxy gelcasting, which involves the in situ consolidation of aqueous KNN suspensions with added hydantoin epoxy resin on a polydimethylsiloxane (PDMS) soft micromold. KNN suspensions with solid loadings of up to 45.0 vol.% have rheological behavior, which was suitable for the gelcasting process. The uniform green KNN bodies derived from the optimized suspension of 42.0 vol.% solid loading and 15.0 wt.% resin had exceptionally high mechanical strength (9.14 MPa), which was responsible for the integrity of the piezoceramic micropattern structure. The square-shaped KNN piezoelectric pillar array with lateral dimensions of up to 5 μm and an aspect ratio of up to five was successfully fabricated.

High-aspect ratio polymeric pillar arrays formed via electrohydrodynamic patterning

2007 ◽  
Vol 43 (1) ◽  
pp. 117-122 ◽  
Author(s):  
Michael D. Dickey ◽  
Allen Raines ◽  
Elizabeth Collister ◽  
Roger T. Bonnecaze ◽  
S. V. Sreenivasan ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Pillar Arrays ◽  
Electrohydrodynamic Patterning

scholarly journals Gel casting of sialon ceramics based on water soluble epoxy resin

2015 ◽  
Vol 41 (9) ◽  
pp. 11534-11538 ◽  
Author(s):  
Gang Liu ◽  
Moataz M. Attallah ◽  
Mike Loretto ◽  
Emilie Herny ◽  
Yun Jiang ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Water Soluble ◽  
Gel Casting
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