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    • 9. 发明授权
    • Electroactive apparatus and methods
    • 电动装置和方法
    • US06847155B2
    • 2005-01-25
    • US10108203
    • 2002-03-27
    • Robert W. SchwartzManoj Narayanan
    • Robert W. SchwartzManoj Narayanan
    • H01L41/053H01L41/09H01L41/08
    • H01L41/0926H01L41/0536Y10S310/80
    • High performance electromechanical devices suitable for a wide range of applications are described. The electroactive devices are capable of operating in a manner that offers enhanced mechanical displacement responses and increased load-bearing capabilities. In one embodiment, the device is capable of providing a significantly increased level of free displacement. The electroactive devices include an electroactive composite which includes at least one electroactive material that may comprise an electrostrictive or a piezoelectric material and a tensioning device which is adapted for inducing a mechanical pre-load to the electroactive composite structure. The tensioning device exerts a mechanical pre-load upon the electroactive material which alters stress profile, increases mechanical energy and increases stored elastic energy of the electroactive devices.
    • 描述适用于广泛应用的高性能机电装置。 电动装置能够以提供增强的机械位移响应和增加的承载能力的方式操作。 在一个实施例中,该装置能够提供显着增加的自由位移水平。 电活性器件包括电活性复合材料,其包括至少一种电活性材料,其可以包括电致伸缩或压电材料,以及张紧装置,其适于诱导电活性复合结构的机械预载。 张紧装置对电活性材料施加机械预载,其改变应力分布,增加机械能并增加电活性装置的储存的弹性能。