Mems Fabrication
Mems Fabrication - Related Videos
08:01
Fabrication of 3D Carbon Microelectromechanical Systems (C-MEMS)
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Cited by 6 •
2017
Long and hollow glassy carbon microfibers were fabricated based on the pyrolysis of a natural product, human hair. The two fabrication steps of carbon microelectromechanical and carbon nanoelectromechanical systems, or C-MEMS and C-NEMS, are: (i) photolithography of a carbon-rich polymer precursor and (ii) pyrolysis of the patterned polymer precursor.
16:05
Using Micro-Electro-Mechanical Systems (MEMS) to Develop Diagnostic Tools
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Cited by 1 •
2007
10:28
Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
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Cited by 5 •
2016
We present a compact reflection digital holographic system (CDHM) for inspection and characterization of MEMS devices. A lens-less design using a diverging input wave providing natural geometrical magnification is demonstrated. Both static and dynamic studies are presented.
11:44
Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
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2014
The robust device design of fringing-field electrostatic MEMS actuators results in inherently low squeeze-film damping conditions and long settling times when performing switching operations using conventional step biasing. Real-time switching time improvement with DC-dynamic waveforms reduces the settling time of fringing-field MEMS actuators when transitioning between up-to-down and down-to-up states.
07:36
Fabricating Nanogaps by Nanoskiving
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Cited by 3 •
2013
The fabrication of electrically addressable, high-aspect-ratio (> 1000:1) metal nanowires separated by gaps of single nanometers using either sacrificial layers of aluminum and silver or self-assembled monolayers as templates is described. These nanogap structures are fabricated without a clean room or any photo- or electron-beam lithographic processes by a form of edge lithography known as nanoskiving.
FAQs
The sequence builds device features layer by layer. Photolithography defines patterned regions, deposition adds thin films, etching removes selected material, doping modifies silicon, and wafer bonding joins prepared layers. Coordinating these operations determines where mechanical structures, sensing elements, actuators, and electronic features are located, allowing engineers to form suspended components and other precisely arranged microscale geometries.
Deposition places thin films that can serve as structural or functional layers, while etching selectively removes substrate or film material to reveal patterns and create openings, gaps, or suspended regions. Their combination controls the geometry and composition of the device. Careful selection of these steps helps produce the dimensions and material arrangements required for specific microsystems.
Doping changes selected regions of the silicon substrate, helping establish functional material properties within the device. Wafer bonding joins separately prepared layers, which expands the structures that can be built beyond a single patterned surface. Together, these operations support multilayer architectures and the formation of integrated mechanical, sensing, actuating, and electronic features.
Feature dimensions, material selection, layer arrangement, and surface properties all influence how a microsystem behaves. These variables affect the formation of mechanical structures and the integration of sensors, actuators, or electronics. Fabrication therefore requires precise control of patterning and material-processing steps, because small changes in geometry or surface condition can alter the resulting device characteristics.
A typical workflow starts by selecting a silicon or other substrate, then patterns features with photolithography. Thin-film deposition, etching, and doping add or remove material and modify selected regions. Wafer bonding may join processed layers, completing more complex structures. The resulting sequence is tailored to create suspended elements and functional layers with controlled dimensions and surfaces.
Engineers choose this approach when a design benefits from integrating microscale mechanical structures with sensors, actuators, electronics, or fluidic and optical elements. The process supports devices such as accelerometers, pressure sensors, microphones, microfluidic components, and optical switches. It is especially relevant when compact size, precise feature control, sensitivity, or low-power operation matters.
MEMS fabrication supports engineering systems used in healthcare, communications, and environmental monitoring, as well as sensing and control applications. Accelerometers and pressure sensors provide examples of mechanical sensing, while microphones and optical switches illustrate acoustic and optical functions. Microfluidic components extend the approach to systems that manipulate or manage fluids at small scales.