scholarly journals Electrospraying and ultraviolet light curing of nanometer-thin polydimethylsiloxane membranes for low-voltage dielectric elastomer transducers

2017 ◽  
Author(s):  
Bekim Osmani ◽  
Tino Töpper ◽  
Matej Siketanc ◽  
Gabor Kovacs ◽  
Bert Müller
Keyword(s):  
Ultraviolet Light ◽  
Low Voltage ◽  
Dielectric Elastomer ◽  
Light Curing

Time-Resolved Plasmonics used to On-Line Monitor Metal/Elastomer Deposition for Low-Voltage Dielectric Elastomer Transducers

2017 ◽  
Vol 3 (8) ◽  
pp. 1700073 ◽  
Author(s):  
Tino Töpper ◽  
Samuel Lörcher ◽  
Hans Deyhle ◽  
Bekim Osmani ◽  
Vanessa Leung ◽  
...  
Keyword(s):  
Low Voltage ◽  
Dielectric Elastomer ◽  
Time Resolved ◽  
On Line

Low temperature flash light curing of spray coated zirconium oxide gate dielectric for flexible, fully patterned and low voltage operated organic thin film transistor

MRS Advances ◽  
2017 ◽  
Vol 2 (23) ◽  
pp. 1273-1278
Author(s):  
Sudipta K. Sarkar ◽  
Dipti Gupta
Keyword(s):  
Thin Film ◽  
Low Temperature ◽  
Zirconium Oxide ◽  
Gate Dielectric ◽  
Low Voltage ◽  
Flexible Substrate ◽  
Shadow Mask ◽  
Zirconium Complex ◽  
Organic Thin Film ◽  
Light Curing

ABSTRACTIn this work, we present low temperature flash light based curing of spray coated high-k zirconium oxide (ZrOx) thin film to realize low voltage operated flexible and fully patterned organic thin film transistors (OTFTs). A simple sol-gel technique was followed to prepare ZrOx from a zirconium complex. By spraying the precursor solution onto substrate through shadow mask, a patterned film was obtained. On the other hand subsequent flash light curing of the coated film not only reduced processing time but also allowed us to fabricate device on polymeric flexible substrate. Spectroscopic analysis confirmed formation of ZrOx film from the solution of zirconium complex. Finally as prepared ZrOx was used as gate dielectric layer in OTFT structure to keep operating voltage as low as -3V. Flexible polyethylenetrephthalate (PET) sheet was used as flexible substrate and pentacene was used as organic active layer. Each and every layer was deposited through metal made shadow mask to develop fully patterned OTFT. Field effect mobility and ON/OFF ratio of as fabricated transistor was found to be as high as 1.2 cm2V-1S-1 and 105 respectively.

scholarly journals Printing low-voltage dielectric elastomer actuators

2015 ◽  
Vol 107 (24) ◽  
pp. 244104 ◽  
Author(s):  
Alexandre Poulin ◽  
Samuel Rosset ◽  
Herbert R. Shea
Keyword(s):  
Low Voltage ◽  
Dielectric Elastomer ◽  
Dielectric Elastomer Actuators

High Lift Micro‐Aerial‐Robot Powered by Low Voltage and Long Endurance Dielectric Elastomer Actuators

2021 ◽  
pp. 2106757
Author(s):  
Zhijian Ren ◽  
Suhan Kim ◽  
Xiang Ji ◽  
Weikun Zhu ◽  
Farnaz Niroui ◽  
...  
Keyword(s):  
Low Voltage ◽  
Dielectric Elastomer ◽  
High Lift ◽  
Dielectric Elastomer Actuators ◽  
Aerial Robot ◽  
Long Endurance

Modeling of Inhomogeneous Deformation in a Dielectric Elastomer Generator for Energy Harvesting

2010 ◽  
Author(s):  
Tiefeng Li ◽  
Christoph Keplinger ◽  
Liwu Liu ◽  
Richard Baumgartner ◽  
Shaoxing Qu
Keyword(s):  
Energy Harvesting ◽  
Low Voltage ◽  
High Energy ◽  
Dielectric Elastomer ◽  
Optimal Operation ◽  
High Energy Density ◽  
Chamber Pressure ◽  
Inhomogeneous Deformation ◽  
Air Chamber ◽  
Compliant Electrodes

Dielectric elastomer transducers promise to combine high energy density at low cost and lightweight when used as actuators or for energy harvesting generators. A cornucopia of possible applications have been demonstrated over the last years including soft matter based actuators for robotics, tunable optics, medical devices, space robotics and energy harvesters. Prestretch effects and the electromechanical instability have been shown to highly influence the performance of dielectric elastomer transducers. Nevertheless only sparse research has been done on instability and prestretch effects of dielectric elastomer membranes under inhomogeneous deformation. Dielectric elastomer transducers consist of an elastomer membrane sandwiched between a pair of compliant electrodes and can be considered as deformable capacitors with variable capacitance. Here we focus on a specific experimental setup well suited to study the performance of dielectric elastomer materials for energy harvesting. In this setup an elastomer membrane is equibiaxially prestretched and fixed on top of an air chamber which is connected to a compressed air reservoir, the source of mechanical energy for thegenerator. From the electrical point of view the compliant electrodes on the elastomer membrane can be connected to both a high and low voltage charge reservoir. Thus the change in capacitance during deformation can be used to boost charges from the low voltage reservoir to the high voltage reservoir. Experimentally, different constant voltages are applied to the elastomer membrane during inflation and the air chamber pressure is recorded together with the shape and the volume of the balloon for different initial prestretches. The usual instability in the pressure-volume curves of ballon inflation experiments are shown to be influenced by applied voltage and prestretch. Theoretically, the setup is modeled as a thermodynamic system, with static electric and mechanical load where quasi-static equilibrium states can be achieved. To describe the inhomogeneous deformation and to correctly account for the hyperelastic behavior of the material over the whole deformation range an asymmetric model is built based on the Arruda-Boyce material model. The results of the numerical simulation are fitted to the experimental data to obtain significant material parameters in order to predict the optimal operation regime of the dielectric elastomer generator. The experimental results accompanied by the theoretical analysis may be used as a benchmark for the applicability of dielectric elastomer generators and pave ways for understanding the dielectric elastomer behavior under inhomogeneous deformation.

High-speed low-voltage ultraviolet light source

1984 ◽  
Vol 23 (18) ◽  
pp. 3196 ◽  
Author(s):  
L. Huang ◽  
S. C. Hsu ◽  
H. S. Kwok
Keyword(s):  
Light Source ◽  
Ultraviolet Light ◽  
High Speed ◽  
Low Voltage
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