PDMS Bonding & Microfluidics

PDMS_Bonding_&_Microfluidics

An important field for the application of low pressure plasma is the bonding of microfluidic devices from polydimethylsiloxane, (PDMS). PDMS is important in the manufacturing of microfluidic components when activated with oxygen plasma. When a PDMS component and a silicon containing structure are plasma activated they are able to bond together without an adhesive. This method of bonding without an adhesive enables production of smaller features versus using an adhesive.

PDMS Bonding & Microfluidics Functional Principles

PDMS is a castable inert silicone that is used to take on the shape or form of the microfluidic channels and structures of the mold it is cast into. These casted structures are formed from raised shapes produced in the bottom of a mold. When the PDMS is cast in the mold and removed, the shapes in the bottom of the mold are transferred into the casted part.

These casted parts are then placed in oxygen plasma with the glass or silicon containing mating parts. When the parts are activated with oxygen plasma and then placed together with precision these parts will bond. The bond characteristics are covalent, meaning the PDMS part and the mating part share electrons producing a very strong bond.

When bonding PDMS devices it is important to determine if you require equipment for a simple proof of ability or tooling to optimize and repeat the process in volume. A wide range of products are available to bond PDMS. Understanding the subtle differences is important to ensure your application of plasma treatment is successful.

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Plasma Etching and Cleaning Strategy for Better Product Quality

PDMS Bonding & Microfluidics Industries & Uses

The application of producing microfluidic devices is relatively new technology with applications in industries performing process evaluation of fluid chemistries. The ability to reduce the size of the fluid testing hardware and the volume of the fluid required to test through the application of microfluidics are the key criteria driving the industry. These key variables determine the need of the medical industry, biotech and others to continually apply these design aspects to their individual needs.

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Popular PDMS Bonding & Microfluidics Systems

{id=1, name='Femto', order=0}

Femto Version 1

Control Cabinet:
W 310 mm H 330 mm D 420 mm

Chamber:
Ø 3.9 in, L 10.9 in

Chamber Volume:
2

Gas Supply:
1 gas channel via needle valve

Generator:
1 pc. with 40 kHz
(optional: 13.56 MHz or 2.45 GHz)

Control:
Semi-Automatic

{id=1, name='Femto', order=0}

Femto Version 5

Control Cabinet:
W 310 mm H 330 mm D 420 mm

Chamber:
Ø 3.9 in, L 10.9 in

Chamber Volume:
2

Gas Supply:
Mass flow controllers

Generator:
1 pc. with 40 kHz
(optional: 13.56 MHz or 2.45 GHz)

Control:
Touch Screen

{id=3, name='Nano', order=2}

Nano Version 5

Control Cabinet:
W 600 mm H 1700 mm D 800 mm

Chamber:
Ø 10.5 in, L 16.5 in

Chamber Volume:
24

Gas Supply:
2 gas channel via needle valve

Generator:
1 pc. with 40 kHz
(optional: 13.56 MHz or 2.45 GHz)

Control:
Semi-Automatic

{id=3, name='Nano', order=2}

Nano Version 6

Control Cabinet:
W 600 mm H 1700 mm D 800 mm

Chamber:
Ø 10.5 in, L 16.5 in

Chamber Volume:
24

Gas Supply:
Mass flow controllers

Generator:
1 pc. with 40 kHz
(optional: 13.56 MHz or 2.45 GHz)

Control:
PC

{id=7, name='Zepto', order=6}

Zepto Version 3

Control Cabinet:
W 425 mm H 185 mm D 450 mm

Chamber:
Ø 4.1 in, L 11.8 in

Chamber Volume:
2.6

Gas Supply:
Mass flow controllers

Generator:
1 pc. with 40 kHz
(optional: 13.56 MHz)

Control:
Touch Screen

{id=8, name='Atto', order=7}

Atto Version 3

Control Cabinet:
W 425 mm H 275 mm D 450 mm

Chamber:
Ø 8.3 in, L 11.8 in

Chamber Volume:
10.5

Gas Supply:
Mass flow controllers

Generator:
1 pc. with 40 kHz
(optional: 13.56 MHz)

Control:
Touch Screen

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