Publications de Yauhen Sheima | EPFL Graph Search

Synthesis of polysiloxane elastomers modified with sulfonyl side groups and their electromechanical response

Dielectric elastomer transducers are elastic capacitors that respond to mechanical or electrical stress. They can be used in applications such as millimeter-sized soft robots and harvesters of the energy contained in ocean waves. The dielectric component o ...

Royal Society of Chemistry2023

Slot-Die Coating of an On-the-Shelf Polymer with Increased Dielectric Permittivity for Stack Actuators

Yauhen Sheima

Nitrile-butadiene rubbers (NBR) have been extensively used as dielectric materials due to their commercial availability, excellent mechanical properties, glass transition temperature below 0 degrees C, and increased dielectric permittivity owing to the pre ...

AMER CHEMICAL SOC2022

Transient Elastomers with High Dielectric Permittivity for Actuators, Sensors, and Beyond

Holger Frauenrath, Yauhen Sheima

Dielectric elastomers (DEs) are key materials in actuators, sensors, energy harvesters, and stretchable electronics. These devices find applications in important emerging fields such as personalized medicine, renewable energy, and soft robotics. However, e ...

AMER CHEMICAL SOC2022

High Permittivity Siloxanes as Promising Materials for Dielectric Elastomer Transducers: From Synthesis to Application

Yauhen Sheima

The speed of change in the modern world is impressive. Within the last 50 years, many devices and technologies have significantly transformed their appearance, intrinsic characteristics and improved their performance. Computers have changed from the size o ...

EPFL2022

Polysiloxanes Modified with Different Types and Contents of Polar Groups: Synthesis, Structure, and Thermal and Dielectric Properties

Holger Frauenrath, Yulia Yuts, Yauhen Sheima

Polymers with high dielectric permittivity are promising for the construction of next-generation transducers and energy storage devices with improved energy density. Here, we report the synthesis, glass-transition temperature (T-g), and dielectric properti ...

American Chemical Society2021

A highly elastic polysiloxane-based polymer electrolyte for all-solid-state lithium metal batteries

Yauhen Sheima

Replacing the flammable liquid electrolyte currently used in most rechargeable lithium-ion batteries with a solid polymer electrolyte promises improved operational safety and increased energy density, e.g. by enabling lithium metal anodes. Polymer electrol ...

Royal Society of Chemistry2021

Artificial Muscles: Dielectric Elastomers Responsive to Low Voltages

Yauhen Sheima

The lack of soft high-dielectric-permittivity elastomers responsive to a low voltage has been a long-standing obstacle for the industrialization of dielectric elastomer actuators (DEA) technology. Here, elastomers that not only possess a high dielectric pe ...

WILEY-V C H VERLAG GMBH2019

Salt-induced thermochromism of a conjugated polyelectrolyte

Laurent Alexis Clément Vannay, Anne-Clémence Corminboeuf, Natalie Renuka Banerji, Yauhen Sheima

We report here the photophysical properties of a water-soluble conjugated polythiophene with cationic side-chains. When dissolved in aqueous buffer solution (PBS, phosphate buffered saline), there is ordering of the polymer chains due to the presence of th ...

Royal Soc Chemistry2017