公开(公告)号：US10439519B2

公开(公告)日：2019-10-08

申请号：US15803708

申请日：2017-11-03

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Myung-Suk Chun ,  Byoungjin Chun ,  Ji-Young Lee ,  Heesoo Jeon

IPC: H02N1/00 ,  H02N3/00 ,  H02N1/08

Abstract: Disclosed herein is a method and an apparatus using microfluidic channel array for converting mechanical energy into electric energy by streaming potential and streaming current caused when the electrolyte liquid flows in a charged surface due to a pressure drop. The present invention relates to a method and an apparatus for designing channels with hierarchical structure in which a primary multi-channel is provided by radially arranging one or more unit channels, and each of the unit channels includes an inflow channel, an outflow channel, and a secondary multi-channel provided by arranging one or more channels in parallel, thereby improving output power and flow stability.

公开(公告)号：US09291172B2

公开(公告)日：2016-03-22

申请号：US14090781

申请日：2013-11-26

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Myung-Suk Chun ,  Kwang Seok Kim ,  Hyoung-Juhn Kim ,  Young Tae Byun

IPC: F04B17/00 ,  F04F7/00 ,  F04D11/00

CPC classification number: F04F7/00 ,  F04D11/00 ,  Y10T137/0318 ,  Y10T137/85978

Abstract: An apparatus for generating pulsatile flows includes a liquid vessel capable of containing a liquid, a plurality of revolving mechanisms associated with each other, and a microchannel supplied with a liquid from the liquid vessel. As the plurality of revolving mechanisms rotate, a periodically changing pressure difference occurs between the liquid vessel and the microchannel, thereby implementing a pulsatile flow having a wave functional form in the microchannel. By applying the hydraulic head difference and controlling revolution of the revolving mechanisms based on Fourier cosine series, a minute and precise pulsatile flow of a wave functional form may be implemented by means of simple configuration and fabrication, which may not easily obtained by a conventional pump.

Abstract translation: 用于产生脉冲流的装置包括能够容纳液体的液体容器，与其相关联的多个旋转机构和从液体容器供应液体的微通道。 当多个旋转机构旋转时，在液体容器和微通道之间出现周期性变化的压差，从而在微通道中实现具有波函数形式的脉动流。 通过应用基于傅立叶余弦系列的旋转机构的液压头差和控制旋转，可以通过简单的构造和制造实现波函数形式的微小和精确的脉动流，这可能不容易由常规泵 。

公开(公告)号：US20140144513A1

公开(公告)日：2014-05-29

申请号：US14090781

申请日：2013-11-26

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Myung-Suk Chun ,  Kwang Seok Kim ,  Hyoung-Juhn Kim ,  Young Tae Byun

IPC: F04B41/00

CPC classification number: F04F7/00 ,  F04D11/00 ,  Y10T137/0318 ,  Y10T137/85978

Abstract: An apparatus for generating pulsatile flows includes a liquid vessel capable of containing a liquid, a plurality of revolving mechanisms associated with each other, and a microchannel supplied with a liquid from the liquid vessel. As the plurality of revolving mechanisms rotate, a periodically changing pressure difference occurs between the liquid vessel and the microchannel, thereby implementing a pulsatile flow having a wave functional form in the microchannel. By applying the hydraulic head difference and controlling revolution of the revolving mechanisms based on Fourier cosine series, a minute and precise pulsatile flow of a wave functional form may be implemented by means of simple configuration and fabrication, which may not easily obtained by a conventional pump.

Abstract translation: 用于产生脉冲流的装置包括能够容纳液体的液体容器，与其相关联的多个旋转机构和从液体容器供应液体的微通道。 当多个旋转机构旋转时，在液体容器和微通道之间出现周期性变化的压差，从而在微通道中实现具有波函数形式的脉动流。 通过应用基于傅立叶余弦系列的旋转机构的液压头差和控制旋转，可以通过简单的构造和制造实现波函数形式的微小和精确的脉动流，这可能不容易由常规泵 。

公开(公告)号：US12228496B2

公开(公告)日：2025-02-18

申请号：US17083299

申请日：2020-10-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Myung-Suk Chun ,  Sun Mi Lee ,  Jae Hun Kim ,  Chansung Park

IPC: G01N15/14 ,  B01L3/00 ,  G01N21/64

Abstract: Provided is an apparatus for cell particle sorting based on microfluidic-chip flow, by using a design in which Dean flow focusing occurring in a spiral channel and hydrodynamic filtration are coupled. The apparatus comprises a first substrate including a spiral channel having an inner surface and an outer surface based on a radius of curvature, a sample solution inlet, a medium inlet, and a spiral inner-outlet and a spiral outer-outlet both for discharging the particles, and a second substrate including a main channel in which the sample solution discharged from the first substrate and passing through an inter-substrate way flows and a cut-off width WC is set, a side channel allowing a medium introduced into the medium inlet to flow to focus the sample solution on a sidewall of the main channel, a plurality of branch channels connected to the sidewall of main channel and configured to receive the particles from the main channel, a main channel outlet, and at least one branch channel outlet.