Parylene Lift-off
Parylene Lift-off - Related Videos
01:23
Lift
0 Views •
2025
Lift is a fundamental aerodynamic force that acts perpendicular to the direction of airflow. It plays a central role in achieving and sustaining flight and in stabilizing various vehicles. Lift primarily originates from pressure differences created across surfaces, such as an airfoil. A lower pressure region forms above the wing, while a higher pressure region forms below it, generating an upward force. This differential results from the shape and orientation of the airfoil, enabling the wing...
09:18
Clark Y-14 Wing Performance: Deployment of High-lift Devices (Flaps and Slats)
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2023
Source: David Guo, College of Engineering, Technology, and Aeronautics (CETA), Southern New Hampshire University (SNHU), Manchester, New Hampshire A wing is the major lift-generating apparatus in an airplane. Wing performance can be further enhanced by deploying high-lift devices, such as flaps (at the trailing edge) and slats (at the leading edge) during takeoff or landing. In this experiment, a wind tunnel is utilized to generate certain airspeeds, and a Clark Y-14 wing with a flap and slat...
07:19
Cell Patterning on Photolithographically Defined Parylene-C: SiO2 Substrates
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Cited by 9 •
2014
This protocol describes a microfabrication-compatible method for cell patterning on SiO2. A predefined parylene-C design is photolithographically printed on SiO2 wafers. Following incubation with serum (or other activation solution) cells adhere specifically to (and grow according to the conformity of) underlying parylene-C, whilst being repulsed by SiO2 regions.
07:29
A Mechanical Construction to Enhance the Stability and Safety of Lifting and Thrusting Manipulation of Acupuncture
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2025
This protocol designs a cannula that can be used to control the range of motion for the lifting and thrusting manipulation in acupuncture, thereby improving stability and safety. It can thus serve both the clinical application and scientific research of acupuncture treatment.
14:02
Flat-floored Air-lifted Platform: A New Method for Combining Behavior with Microscopy or Electrophysiology on Awake Freely Moving Rodents
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Cited by 63 •
2014
This method creates a tangible, familiar environment for the mouse to navigate and explore during microscopic imaging or single-cell electrophysiological recordings, which require firm fixation of the animal’s head.
FAQs
During Parylene lift-off, the sacrificial layer acts as a temporary support and pattern-defining element beneath the parylene. After vapor-phase polymerization, dissolving this layer removes the underlying support and allows the selected parylene film to separate from the substrate. Its patterned arrangement therefore influences whether a feature is transferred onto the surface or remains suspended as a membrane.
Vapor-phase polymerization produces thin, conformal parylene coverage over the patterned sacrificial material. This combination allows the polymer to form features that follow the underlying microscale arrangement while retaining a thin-film structure. Such conformal coverage is important when integrating parylene with complex microscale devices and surface-compatible manufacturing workflows.
Parylene lift-off creates the desired pattern by removing a temporary material beneath the deposited polymer, rather than relying on conventional etching to remove exposed parylene. The distinction shifts pattern formation from subtracting the polymer itself to dissolving the supporting layer. This approach enables thin, conformal structures, including films that separate from the substrate or remain suspended.
The workflow begins by depositing a sacrificial material on the substrate and patterning that layer to establish the intended structure. Parylene is then applied through vapor-phase polymerization, coating the patterned surface. The final stage dissolves the sacrificial material, allowing the selected parylene film to separate or remain suspended according to the fabricated pattern.
Parylene lift-off supports fabrication of flexible membranes, microfluidic components, insulation layers, and microelectromechanical systems. These applications use the process to place thin polymer structures into microscale device layouts without conventional etching. The resulting patterns can serve as structural, fluid-handling, insulating, or mechanically integrated elements within broader engineering systems.
The chemical resistance of parylene helps its patterned structures remain compatible with demanding microscale device environments, while its electrical insulation supports separation of conducting or functional regions. Together, these properties broaden the engineering role of lift-off-fabricated films beyond mechanical patterning. They help integrate parylene into complex devices and surface-compatible manufacturing workflows.