Nanoscale Channel Fabrication
Nanoscale Channel Fabrication - Related Videos
16:00
Fabrication of the Thermoplastic Microfluidic Channels
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2008
Here we demonstrate how to fabricate thermoplastic microfluidic chips using hot embossing and heat sealing. Then we demonstrate how to use in situ light directed surface grafting and polymerization through the sealed chip to form the composite solid phase columns.
10:32
Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding
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Cited by 2 •
2014
A method for permanently bonding two silicon wafers so as to realize a uniform enclosure is described. This includes wafer preparation, cleaning, RT bonding, and annealing processes. The resulting bonded wafers (cells) have uniformity of enclosure ~1%1,2. The resulting geometry allows for measurements of confined liquids and gasses.
07:15
A Novel Method for In Situ Electromechanical Characterization of Nanoscale Specimens
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Cited by 2 •
2017
Isolating electrical and thermal effects on electrically assisted deformation (EAD) is very difficult using macroscopic samples. Metallic sample micro- and nanostructures together with a custom test procedure have been developed to evaluate the impact of applied current on the formation without joule heating and evolution of dislocations on these samples.
05:41
Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
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Cited by 18 •
2017
This paper describes a novel method for the rapid manufacture of high quality bioinspired nanoscale hydroxyapatite. This biomaterial is of great significance in the manufacture of a wide range of innovative medical devices for clinical applications in orthopedics, craniofacial surgery and dentistry.
11:00
High-throughput Detection of Respiratory Pathogens in Animal Specimens by Nanoscale PCR
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Cited by 11 •
2016
High-throughput testing of DNA and RNA based pathogens by nanoscale PCR is described using a syndromic canine and equine respiratory PCR panel.
FAQs
As channel dimensions shrink, surface forces and electrostatic interactions can become more influential than effects that dominate in larger channels. These interactions affect how fluids, ions, and molecules move through the confined space, while diffusion also becomes especially important. Consequently, channel behavior cannot always be predicted by simply scaling down a conventional microchannel design.
Geometry determines the confined pathway available for fluids, ions, molecules, or electrical signals, so fabrication must control dimensions and pattern placement precisely. Sealing then converts the patterned structure into a usable enclosed channel. Together, these steps preserve the intended transport path and help ensure that the finished device performs according to its engineered design.
Nanoscale channels can exhibit transport dominated by surface forces, electrostatic interactions, and diffusion, rather than by the same balance of effects found in larger channels. This difference changes how engineers interpret fluid, ion, and molecular movement. Designs intended for miniaturized devices therefore require attention to confinement-related behavior instead of relying only on larger-scale channel assumptions.
Electron-beam lithography and imprinting are among the patterning methods used to define nanoscale channel layouts. Patterning establishes the intended geometry, while material removal or deposition helps create the physical structure. A subsequent bonding step can seal the patterned region. Combining these operations allows engineers to translate a designed pathway into an integrated nanofluidic structure.
A typical workflow begins by defining the channel pattern, using a method such as electron-beam lithography or imprinting. Engineers then use material removal, deposition, or related structural operations to establish the channel features. Finally, bonding seals the structure. The sequence links design, material processing, and enclosure so the resulting device can support controlled transport.
These channels are useful when an application requires controlled handling of fluids, ions, molecules, or electrical signals at very small scales. Supported uses include chemical separations, single-molecule analysis, biosensing, ion transport studies, and miniaturized lab-on-a-chip devices. Their engineering value comes from combining confined transport with a fabricated structure that can be integrated into compact analytical systems.