Microfabrication Protocols
Microfabrication Protocols - Related Videos
07:44
Microfabrication via Photolithography
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2023
The fabrication of BioMEM devices is often done using a microfabrication technique called photolithography. This widely used method utilizes light to transfer a pattern onto a silicon wafer, and provides the basis for the fabrication of many types of BioMEM devices. This video presents the photolithography technique, shows how the process is performed in the cleanroom, and introduces some applications of the process.
09:36
Study of Cell Migration in Microfabricated Channels
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Cited by 43 •
2014
A quantitative method to study spontaneous migration of cells in a one-dimensional confined microenvironment is described. This method takes advantage of microfabricated channels and can be used to study migration of large number of cells under different conditions in single experiments.
13:02
Microfabrication of Nanoporous Gold Patterns for Cell-material Interaction Studies
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Cited by 16 •
2013
We report on techniques to micropattern nanoporous gold thin films via stencil printing and photolithography, as well as methods to culture cells on the microfabricated patterns. In addition, we describe image analysis methods to characterize morphology of the material and the cultured cells using scanning electron and fluorescence microscopy techniques.
15:21
Microfabricated Platforms for Mechanically Dynamic Cell Culture
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Cited by 3 •
2010
In this protocol, we demonstrate the fabrication of a microactuator array of vertically displaced posts on which the technology is based, and how this base technology can be modified to conduct high-throughput mechanically dynamic cell culture in both two-dimensional and three-dimensional culture paradigms.
09:37
Microfabrication of Chip-sized Scaffolds for Three-dimensional Cell cultivation
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Cited by 11 •
2008
We present two processes for the microfabrication of porous polymer chips for three-dimensional cell cultivation. The first one is hot embossing combined with a solvent vapour welding process. The second one uses a recently developed microthermoforming process combined with ion track technology leading to a significant simplification of manufacture.
FAQs
Each process contributes a different type of control. Photolithography defines selected patterns, deposition adds material, etching removes material to shape features, and molding can reproduce structures such as channels. Surface treatment then modifies the patterned substrate for its intended biological use. Combining these operations allows researchers to coordinate geometry, fluid movement, chemical gradients, and cell organization within one engineered platform.
Micrometer-scale precision lets researchers position features and boundaries consistently across a device or experiment. Reproducibility makes it easier to compare how cells respond to defined fluid paths, chemical gradients, or neighboring structures rather than to uncontrolled variation in the substrate. These qualities are especially valuable when microfabricated platforms are used to study cellular behavior, screen drugs, or construct tissue engineering scaffolds.
Surface treatment adjusts the properties of the substrate after its physical features have been formed. In biological systems, that step helps prepare the engineered surface for applications involving cell patterning, tissue engineering, or controlled cellular interactions. Its importance is functional as well as structural: a precisely shaped device still needs an appropriate surface environment to support the biological behavior being investigated.
Patterned substrates and molded microfluidic channels provide defined paths and spaces through which fluids can be controlled. Their geometry helps establish where flow occurs and how chemical conditions vary across the device. Researchers can therefore create engineered microenvironments in which cells experience selected spatial relationships and gradients, supporting studies of cellular behavior, developmental processes, and interactions relevant to tissue formation.
A protocol commonly begins by defining a pattern, followed by deposition or removal of material to build the desired structure. Molding may then be used to form or reproduce microfluidic channels, while surface treatment prepares the finished feature for biological use. The exact sequence depends on whether the goal is a patterned substrate, a channel system, a cell platform, or a tissue engineering scaffold.
The source material identifies patterned substrates, microfluidic channels, cell-patterning platforms, and tissue engineering scaffolds as major outcomes. These structures can be designed to organize cells, direct fluid movement, or create controlled microenvironments. Selecting among them depends on the experimental objective, such as examining cellular behavior, testing drug responses, studying development, or supporting regenerative medicine research.
They are useful when an experiment benefits from controlled microscale conditions rather than an unconstrained biological environment. Microfabricated platforms can organize cells, regulate fluid flow, and establish chemical gradients in ways that support systematic testing. In diagnostics and drug screening, these features help create reproducible assay environments and provide a structured setting for evaluating biological responses under engineered conditions.
In developmental biology, engineered features can help researchers examine how cells behave within controlled spatial arrangements, fluid conditions, and chemical gradients. For regenerative medicine, patterned substrates and tissue engineering scaffolds provide structures for organizing biological components in defined environments. These applications connect fabrication accuracy with questions about cell organization, tissue formation, and the design of systems intended to support regeneration.