Journal ArticleDOI
Diffractive Transmission Grating Tuned by Dielectric Elastomer Actuator
Reads0
Chats0
TLDR
In this paper, a transmission grating (TG) is used to continuously adjust the properties of diffractive optical elements, achieving high transmission, low optical distortion, and polarization independent.Abstract:
A technology for the implementation of electrically tunable optical elements is presented. We illustrate, on the example of a transmission grating (TG), that dielectric elastomer actuators can be used to continuously adjust the properties of diffractive optical elements. The demonstrated TG operates with high transmission, low optical distortion ( 93 kW/cm2), is polarization-independent, and achieves a very large tuning range (7.5% grating period compression). Extending the presented technology to other optical elements, including lenses, phase shifters, or intensity filters, is expected to result in a wide range of electrically tunable optical devices.read more
Citations
More filters
Journal ArticleDOI
Multi-functional dielectric elastomer artificial muscles for soft and smart machines
TL;DR: The octopus arm is an example of a soft actuator with a virtually infinite number of degrees of freedom (DOF) as discussed by the authors, which utilizes neural ganglia to process sensory data at the local “arm” level and perform complex tasks.
Journal ArticleDOI
New Silicone Composites for Dielectric Elastomer Actuator Applications In Competition with Acrylic Foil
Dorina M. Opris,Martin Molberg,Christian Walder,Yee Song Ko,Yee Song Ko,Beatrice Fischer,Frank Nüesch +6 more
TL;DR: Several polydimethylsiloxane elastomers were developed and investigated regarding their potential use as materials in dielectric elastomer actuators (DEA) as mentioned in this paper, and the silicone showing the best actuation at the lowest electric field was further used as matrix and compounded with encapsulated conductive polyaniline particles.
Journal ArticleDOI
Synthesizing a new dielectric elastomer exhibiting large actuation strain and suppressed electromechanical instability without prestretching
TL;DR: In this article, Zhao et al. reported the synthesis of an acrylic elastomer capable of achieving high actuation performance without pre-strain by suppressing electromechanical instability.
Journal ArticleDOI
Synergistic Improvement of Actuation Properties with Compatibilized High Permittivity Filler
TL;DR: In this paper, a macromolecular plasticizing filler molecule with a combination of high dipole moment and compatibilizer moieties was synthesized to simultaneously ensure improvement of electromechanical properties and compatibility with the host matrix.
Journal ArticleDOI
Mechanics of dielectric elastomer structures: A review
Tongqing Lu,Cheng Ma,Tiejun Wang +2 more
TL;DR: In this paper, a review of the recent advances in the theory of dielectric elastomer and demonstrates some examples of using theory to design DE transducers is presented, from the simplest homogeneous deformation of a flat membrane to the highly complex bifurcations of a tube.
References
More filters
Journal ArticleDOI
High-Speed Electrically Actuated Elastomers with Strain Greater Than 100%
TL;DR: It is shown that prestraining the film further improves the performance of electrical actuators made from films of dielectric elastomers coated on both sides with compliant electrode material.
Journal ArticleDOI
Acoustic diffraction of light in anisotropic media
TL;DR: In this paper, the Bragg formalism was generalized to include diffraction in anisotropic media, and experiments were conducted using optical diffraction from longitudinal and transverse acoustic waves in crystal quartz and in sapphire.
Journal ArticleDOI
Deformable grating optical modulator.
TL;DR: A new type of lightmodulator, the deformable grating modulator, based on electrically controlling the amplitude of a micromachined phase grating is described, which allows the use of structures with high mechanical resonance frequencies.
Journal ArticleDOI
High-efficiency liquid-crystal optical phased-array beam steering
TL;DR: Efficient, electrically tunable, agile, inertialess, near-diffraction-limited one-dimensional optical beam steering is demonstrated at the infrared wavelength of 10.6 microm with a liquid-crystal phased array.