公开(公告)号：US20180193849A1

公开(公告)日：2018-07-12

申请号：US15739695

申请日：2016-06-22

Applicant: AGENCY FOR SCIENCE. TECHNOLOGY AND RESEARCH

Inventor： Meysam SHARIFZADEH MIRSHEKARLOO ,  Kui YAO ,  Szu Cheng LAI ,  Chee Kiang Ivan TAN ,  Lei ZHANG

IPC: B05B1/08 ,  H01L41/083 ,  H01L41/187 ,  H02N2/04 ,  H02N2/06

CPC classification number: B05B1/083 ,  H01L41/083 ,  H01L41/1875 ,  H02N2/043 ,  H02N2/067

Abstract: A fluid jet dispenser using at least two multilayer piezoelectric actuators is provided. The fluid jet dispenser includes a dispensing head and an electrical driver. The dispensing head includes at least two d31-mode multilayer piezoelectric actuators, a displacement magnifying element mechanically coupled to the d31-mode multilayer piezoelectric actuators, a piston, and a nozzle. More preferably, the two d31-mode multilayer piezoelectric actuators operate in an anti-phase condition. The electrical driver is electrically coupled to the d31-mode multilayer piezoelectric actuators for displacing the actuators in directions substantially perpendicular to polarization of piezoelectric layers in the d31-mode multilayer piezoelectric actuators in response to charging and discharging of the actuators by the electrical driver, to generate a fast movement of the piston to jet a pressurized fluid out of the nozzle of the dispensing head.