Progress made in search for lead-free ferropiezoelectrics
Researchers at Instituto de Ciencia de Materiales de Madrid (ICMM) and CIMAV (Chihuahua, Mexico) have carried out a synchrotron powder diffraction experiment, designed to shed light on the controversial problem of the crystal structure of
The investigated material is a key component of the current international search for lead-free ferropiezoelectrics.
Read the full paper
NIST announes center to advance materials by design - see MRS Bulletin January 2014 for more information.
Development of a Thick Film PZT Foil Sensor for Use in Structural Health Monitoring Applications
Acoustic Emission (AE) monitoring is a technique of growing interest in the field of non-destructive testing (NDT). The use of AE devices to monitor the health of structural components is currently limited by the cost of AE equipment, which prohibits the permanent placement of AE devices on structures for the purposes of continuous monitoring and the monitoring of areas with limited access. Micro-electromechanical systems (MEMS) can provide solutions to these issues. The manufacture of a lead zirconate titanate (PZT) film 4.4μm thick on a 110μm thick titanium foil substrate for use as an AE sensor is presented. The thick film sensor is benchmarked against commercially available AE sensors in static and dynamic monitoring applications. The thick film AE device is found to perform well in the detection of AE in static applications. A low signal to noise ratio is found to prohibit the detection of AE in a dynamic application. Read the full paper
Ferroelectrics features on Nature front cover
The cover image of Nature (503:7477), published 28 November 2013, shows an oxide crystal generating electric current from incoming light. The image relates to a paper authored by scientists from the University of Pennsylvania and Drexel University, USA, concerning the use of ferroelectric materials in photovoltaic solar cells. Read the full paper
Cover image reprinted by permission from Macmillan Publishers Ltd: Nature Volume 503 Number 7477 copyright 2013
Material of the month: Lead zirconate titanate
The Institute of Materials, Minerals and Mining have highlighted PZT as material of the month!
EC publishes draft work programmes
In advance of the official call, the European Commission has published the draft work programmes. These papers are being made public just before the adoption process of the work programmes to provide potential participants with the currently expected main lines of the work programmes 2014-2015. They are working documents not yet endorsed by the Commission and their contents do not in any way prejudge the final decision of the Commission.
Smart materials develop into genius materials
Apparently NASA are developing genius materials on-board the International Space Station. They describe them as self-assembling smart materials. However, they describe smart materials as engineered rather than those adapted from nature. (From Smart Materials Group).
Lead-free Ba0.9Ca0.1Ti0.9Zr0.1O3 piezoelectric ceramics processed below 1300 °C
The Instituto de Ciencia de Materiales de Madrid (ICMM) in collaboration with partners from Mexico have processed lead-free ceramics with high piezoelectric sensitivity at temperatures below 1300 ºC. This low thermal budget processing will facilitate commercialisation of the lead-free piezoelectrics.
Measurement techniques for piezoelectric nanogenerators
Ferroelectric Materials Combined with Graphene Could Lead to Faster Computers
Using 3D microdroplet printing scientists build synthetic cells and tissues
Piezo-resistive fibers enable "blood pressure watch" with continuous monitoring
NXP and Cherry team up to make an energy-harvesting wireless light switch
Piezo-MEMS enables wireless sensor networks
DRV2667 piezo haptic driver overview
MicroGen's Piezo-MEMS Vibration Energy Harvesters Enable Linear Technology SmartMesh™ IP Wireless Sensor Network
Teen builds flashlight powered by body warmth