Japan Science and Technology Agency

Kanagawa Academy of Science and Technology

The University of Tokyo

Jfe Engineering Corporation

Institute of Microchemical Technology Co., Ltd.

Kanagawa Institute of Industrial Science and Technology

Kazuma Mawatari

Takehiko Kitamori

Kenji Kitamura

Shigeki Yamazaki

Toshiyuki Tsuchiya

Takahiro Nagata

Yutaka Kazoe

Yuriy Pihosh

Katsuhiko Ohsaki

Masaharu Ueno

Arata Aota

Mari Sasaki

Osamu Tabata

Yoshikuni Kikutani

Yuko Kihira

A first proton-donating layer () is a layer having a proton-donative functional group on the surface, for example, a silicon oxide layer. A second proton-donating layer () is also a layer having a proton-donative functional group on the surface, for example, a silicon oxide layer. Negative surface charges are formed on the main surface section of a first base () and the main surface section of a second base (), and these negative charges increased the proton conductivity in an aqueous solution fed to a nano channel. Although, in the aqueous solution, proton migration through hopping between water molecules contributes to its diffusion, the negative charges formed on the main surfaces of the bases () attract protons in the aqueous solution, and the conduction of protons is efficiently achieved in 'high-speed transfer regions' formed in the vicinity of the proton-donating layers ().

Proton conductor and fuel cell

A functional device (and a functional device manufacturing method) includes a first substrate in which a groove is formed in one surface, a second substrate which is integrally disposed by bonding one surface of the second substrate to the one surface of the first substrate, and forms a flow path together with the groove of the first substrate, at least one modification object of a capture body which captures a target substance supplied into the flow path, an electrode which imparts an electrical or a chemical action to the target substance, and a catalyst, in which the modification object is disposed by being modified on a part of an inner surface of the flow path, a bonding portion between the one surface of the first substrate and the one surface of the second substrate is formed by bonding fluorine to silica.

Functional device and method of manufacturing the same

Provided is a microchip capable of integrating liquid evaporation as an operation on the microchip. In the microchiphaving a gas flow pathinside, liquid is dispersed by capillary action and pooled in a pool portionat a bottom of the gas flow path, and at least a part of the liquid pooled in the pool portionis evaporated. As the capillary action is used, the liquid can be dispersed and pooled in the pool portionat the bottom of the gas flow pathinside the microchip. Besides, the liquid pooled in the pool portionremains in the pool portion by a surface tension even if gas is made to flow in the gas flow pathor the gas flow path is evacuated for evaporation. This enables highly efficient evaporation inside the microchip

Microchip, microchip device, and evaporation operation method using the microchip

A microchannel chip having a microchannel formed in a substrate and a gas-liquid phase separation microchannel whose upper part is covered with a porous film, the gas-liquid phase separation microchannel being connected to the downstream end of the microchannel and having a depth of 10 &#x3bc;m to 100 &#x3bc;m. Also, a gas-liquid phase separation method which is a method for separating a liquid-phase flow from a two-phase flow flowing through a microchannel by removing a gas phase, the two-phase flow composed of the gas phase and the liquid phase, which liquid phase flows in the periphery of the above-described microchannel and which gas phase flows interiorly of the liquid-phase flow.

Microchannel chip and method for gas-liquid phase separation using same

Growing community of inventors

Tokyo, Japan

Kazuma Mawatari