We Continue the Work of Those
Who Were the First.

  • Electrotechnics
  • Electrical Engineering
  • Light & Lighting
  • Power Engineering
  • Transportation
  • Automation
  • Communication
  • Smart Buildings
  • Industry
  • Innovation

Current issue

ELEKTRO 10/2019 was released on November 2nd 2019. Its digital version will be available immediately.

Topic: Topic: Electroenergetics, Devices for transmission and distribution of electricity

Main Article
Problematics of measurement on inverter welding sources

SVĚTLO (Light) 5/2019 was released on September 16th 2019. Its digital version will be available immediately.

Professional organizations activities
International conference LIGHT (SVĚTLO) 2019 – 6th announcement
We participated in International commission on illumination CIE 2019 congress in Washington
Technical colloquium SLOVALUX 2019

Fairs and exhibitions
Inspire with boho styl and design of Far East at autumn fair FOR INTERIOR

Flexible, highly efficient multimodal energy harvesting

24.05.2018 | Penn State University | www.psu.edu

A 10-fold increase in the ability to harvest mechanical and thermal energy over standard piezoelectric composites may be possible using a piezoelectric ceramic foam supported by a flexible polymer support, according to Penn State researchers.

Almost three decades ago, the late Penn State materials scientist Bob Newnham came up with the concept that the connectivity of the piezo filler determined the efficiency of the piezoelectric effect. A three-dimensional material would be more efficient than what he classified as zero-dimensional nanoparticles, one-dimensional nanowires or two-dimensional films, because the mechanical energy would be transported directly through the three-dimensional material instead of dissipating into the polymer matrix.

Flexible energy harvesting

The secret ingredient to solve the mystery of achieving the 3-D structure with a well-defined microstructure turned out to be a cheap polyurethane foam dusting sheet that can be purchased at any home improvement store.


Read more at Penn State University

Image Credit: Wang Lab/Penn State

-jk-