Pdms Device Fabrication
Pdms Device Fabrication - Related Videos
14:48
PDMS Device Fabrication and Surface Modification
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04:45
Non-plasma Bonding of PDMS for Inexpensive Fabrication of Microfluidic Devices
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In this video we demonstrate how to use the neuron microfluidic device without plasma bonding.
08:58
Double Emulsion Generation Using a Polydimethylsiloxane (PDMS) Co-axial Flow Focus Device
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Microfluidic double emulsions generation typically involves devices with patterned wettability or custom-fabricated glass components. Here we describe the fabrication and testing of an all polydimethylsiloxane (PDMS) double emulsion generator that does not require surface treatment or complicated fabrication processes, and is capable of producing double emulsions down to 14 µm.
11:52
Microbubble Fabrication of Concave-porosity PDMS Beads
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05:40
Fabricating Cotton Analytical Devices
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2016
To investigate simple fabrication approaches for multiple assay needs, we created a fluid-absorbing channel system made of cotton material. This device was used to establish a multiple detection platform, and solve contamination issues that commonly affect lateral flow-based biomedical devices, for clinical urinalysis of nitrite, total protein, and urobilinogen.
FAQs
Mixing PDMS with a curing agent initiates the conversion of the liquid polymer mixture into a solid elastomer. Thermal curing allows the cast material to retain the geometry transferred from the master mold. This step determines when the molded layer becomes sufficiently stable for subsequent bonding and use in microscale biomedical experiments.
The master mold provides the physical pattern that PDMS reproduces during casting. Its features become microscale channels or other structures capable of directing fluids, cells, or biochemical reagents. Consequently, the mold design establishes the spatial arrangement through which experiments can control samples and biological components inside the finished device.
Oxygen-plasma treatment is used before bonding a molded PDMS layer to glass or another PDMS layer. In the fabrication workflow, it prepares the contacting surfaces for assembly after thermal curing. This step is important when the device must combine a patterned layer with a supporting or enclosing surface.
Transparency and flexibility make PDMS suitable for biomedical research platforms that require observation and adaptable device formats. These properties support microfluidic diagnostics, cell culture systems, drug-testing platforms, and organ-on-chip models. In such settings, the material enables researchers to construct microscale experimental environments while maintaining direct visual access to the device.
A typical workflow begins by mixing PDMS with its curing agent, followed by casting the mixture against a patterned master mold. Thermal curing solidifies the molded layer, which is then bonded to glass or another PDMS layer, often using oxygen-plasma treatment. The completed structure can contain channels for controlled biomedical experiments.
Medical researchers use this fabrication approach for microfluidic diagnostics, drug testing, cell culture platforms, and organ-on-chip models. The resulting devices can manage small sample volumes while creating controlled, physiologically relevant conditions. These capabilities support experiments involving fluids, cells, or biochemical reagents in compact microscale environments.