公开(公告)号：US11161125B2

公开(公告)日：2021-11-02

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

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.

公开(公告)号：US20210193105A1

公开(公告)日：2021-06-24

申请号：US17268782

申请日：2019-08-23

Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Meysam Sharifzadeh Mirshekarloo ,  Kui Yao ,  Mojtaba Rahimabady ,  Chin Yaw Tan

IPC: G10K11/178 ,  B06B1/06 ,  E06B5/20

Abstract: A noise management system for a window includes an active noise control (ANC) module and a passive sound absorbing module. The ANC module is disposed in or adjacent a ventilation channel of the window and configured to substantially cancel low-frequency noise entering the ventilation channel. The passive sound absorbing module is disposed in or adjacent to the ventilation channel and configured to absorb both high-frequency noise entering the channel and harmonic sounds generated by the ANC module.