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Designing a new material for improved ultrasound(课题组在Nature Materials期刊上发表研究论文)


2018-03-19

 

Piezoelectricity is the material property at the heart of medical ultrasound, sonar, active vibration control and many sensors and actuators. A piezoelectric material has the ability to mechanically deform when an electric voltage is applied or to generate electric charge when a mechanical force is applied.

Adding small amounts of a carefully selected rare earth material, samarium, to a high-performance piezoelectric ceramic called lead magnesium niobate-lead titanate (PMN-PT) dramatically increases its piezo performance, the researchers report in Nature Materials this week. This materials-by-design strategy will be useful in designing materials for other applications as well, the team believes.

https://www.nature.com/articles/s41563-018-0034-4    

https://www.nature.com/articles/s41563-018-0046-0

https://phys.org/news/2018-03-material-ultrasound.html



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