公开(公告)号：US10792638B2

公开(公告)日：2020-10-06

申请号：US15763618

申请日：2016-10-07

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： David Conchouso Gonzalez ,  Armando Arpys Arevalo Carreno ,  Ian G. Foulds

IPC: B01L3/00 ,  B01L3/02 ,  B01J13/08 ,  B01F13/00 ,  B01F13/10 ,  B01F3/08

Abstract: Droplet generation devices and systems that parallelize droplet generation devices are provided. The droplet generation devices can include a symmetric block-and-break system and a tapered droplet generation zone. The symmetric block-and-break system can include a pair of break channels and a pair of bypass channels symmetrically arranged with respect to the dispersed-phase input channel and the output channel. The droplet generation devices can generate monodisperse droplets with a predefined volume over a range of flow rates, pressures, and fluid properties. The droplet generation devices are therefore capable of parallelization to achieve large-capacity droplet generation, e.g. greater than 1 L/hr, with small overall coefficients of variation.

公开(公告)号：US10575075B2

公开(公告)日：2020-02-25

申请号：US16400776

申请日：2019-05-01

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Armando Arpys Arevalo Carreno ,  David Conchouso Gonzalez ,  David Castro Signoret ,  Ian G. Foulds

IPC: H04R1/00 ,  H04R31/00 ,  H04R1/02 ,  H04R17/00

Abstract: Various examples are provided for digital sound reconstruction using piezoelectric array elements. In one example, a digital loudspeaker includes a fixed frame and an array of transducers disposed on the fixed frame. Individual transducers of the array of transducers can include a flexible membrane disposed on a piezoelectric actuation element positioned over a corresponding opening that extends through the fixed frame. In another example, a method includes forming a flexible membrane structure on a substrate and backetching the substrate opposite the flexible membrane structure. The flexible membrane structure can be formed by disposing a first electrode layer on a substrate, disposing a piezoelectric layer on the first electrode layer and disposing a second electrode layer on the piezoelectric layer. A flexible membrane layer (e.g., polyimide) can be disposed on the second electrode layer.

公开(公告)号：US10327052B2

公开(公告)日：2019-06-18

申请号：US15563829

申请日：2016-04-07

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Armando Arpys Arevalo Carreno ,  David Conchouso Gonzalez ,  David Castro Signoret ,  Ian G. Foulds

IPC: H04R1/00 ,  H04R1/02 ,  H04R17/00 ,  H04R31/00

Abstract: Various examples are provided for digital sound reconstruction using piezoelectric array elements. In one example, a digital loudspeaker includes a fixed frame and an array of transducers disposed on the fixed frame. Individual transducers of the array of transducers can include a flexible membrane disposed on a piezoelectric actuation element positioned over a corresponding opening that extends through the fixed frame. In another example, a method includes forming a flexible membrane structure on a substrate and backetching the substrate opposite the flexible membrane structure. The flexible membrane structure can be formed by disposing a first electrode layer on a substrate, disposing a piezoelectric layer on the first electrode layer and disposing a second electrode layer on the piezoelectric layer. A flexible membrane layer (e.g., polyimide) can be disposed on the second electrode layer.