公开(公告)号：US20250108369A1

公开(公告)日：2025-04-03

申请号：US18833271

申请日：2022-11-18

Applicant: ENPLAS CORPORATION

Inventor： Seiichiro SUZUKI ,  Koichi ONO ,  Yuichi SUZUKI

IPC: B01L3/00

Abstract: Provided is a fluid handling device in which a fluid can fill not only a specific flow path but also a connection flow path branching from the specific flow path. The fluid handling device includes a main flow path, a first flow path, and a first connection flow path connecting the main flow path to the first flow path. The main flow path is a flow path into which a fluid A is introduced to fill the main flow path and the first connection flow path, and when the fluid A introduced into the main flow path flows from the main flow path into the first connection flow path, a Laplace pressure PL1 acting at an interface between the fluid A and a fluid B filling the first connection flow path in advance satisfies Condition 1. Condition 1 is PC>PL1, where PC is the internal pressure in a branching portion of the main flow path branching to the connection flow path, and PL1 is the Laplace pressure when the dynamic contact angle θ of the fluid A introduced from the main flow path into the connection flow path relative to an inner wall of the connection flow path is set to a value less than π.