Lithography Electroplating Imprint Transfer
Lithography Electroplating Imprint Transfer - Related Videos
07:58
Electroplating of Thin Films
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2023
Source: Logan G. Kiefer, Andrew R. Falkowski, and Taylor D. Sparks, Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT Electroplating is a process that uses electric current to reduce dissolved metal cations so that they form a thin coating on an electrode. Other thin film deposition techniques include chemical vapor deposition (CVD), spin coating, dip coating, and sputter deposition among others. CVD uses a gas-phase precursor of the element to be...
07:53
Soft Lithography
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2023
Many BioMEM devices, such as microfluidic channels, are fabricated using the soft lithography technique. Here, a microscale pattern is replicated by curing an elastomeric polymer over the 3D structure. These polymeric structures are then used to create a wide range of devices, ranging from microfluidic channels for biosensing applications to microscale bioreactors for the visualization of micro-colonies. This video introduces photolithography and demonstrates the technique in the laboratory.
01:22
Imprinting
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2019
Behavioral imprinting is observed in some newborn animals and occurs when they develop strong and specific attachments to another animal (usually a parent) following brief, early-life exposures. Offspring imprint onto parents within a brief period after birth or hatching; this time window is called the critical period. Once imprinting occurs, the bond established between the parents and their offspring is usually long-lasting. Survival Mother sheep imprint onto the scent of their lambs within...
02:30
Genomic Imprinting and Inheritance
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2020
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes. The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
10:09
Capillary Force Lithography for Cardiac Tissue Engineering
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Cited by 27 •
2014
In this protocol, we demonstrate the fabrication of biomimetic cardiac cell culture substrata made from two distinct polymeric materials using capillary force lithography. The described methods provide a scalable, cost-effective technique to engineer the structure and function of macroscopic cardiac tissues for in vitro and in vivo applications.
FAQs
During electroplating, the applied electric field drives metal-ion reduction at the conductive substrate. Material therefore accumulates in exposed patterned regions rather than being deposited indiscriminately across the entire surface. This mechanism links the electrical driving condition and the exposed geometry to the resulting metallic structure, making control of feature placement and dimensions central to the workflow.
Imprint transfer depends on mechanical contact between a mold and a deformable layer. The relief geometry is replicated as the layer is solidified or subsequently etched, so the transferred structure reflects both the mold pattern and that conversion step. This is especially important when small features must retain their shape, spacing, and intended height.
Lithography and imprint transfer contribute different forms of pattern control. Lithography establishes a mask or resist pattern, whereas imprinting reproduces relief directly from a mold into a deformable layer. Using both can connect an initially defined pattern with a replicated physical structure, while electroplating adds metallic material where the patterned surface exposes the substrate.
A combined workflow begins by forming a lithographic mask or resist pattern, followed by electroplating at the conductive substrate. Imprint transfer then uses a mold pressed into a deformable layer, which is solidified or etched to preserve the relief. Together, these stages provide separate controls for defining, building, and reproducing the intended microstructure.
Key components include a patterned mask or resist, a conductive substrate, metal ions, an applied electric field, a relief mold, and a deformable layer. Each has a distinct role: the pattern selects exposed regions, conductivity enables electroplating, ions supply build material, and the mold and layer carry relief geometry into the transferred structure.
In physics-oriented microfabrication, the workflow is useful when devices require repeatable control of feature size, height, and fidelity. Supported applications include metallic microstructures, molds, sensors, and microelectromechanical systems. Its value lies in linking patterned geometry with material buildup or relief replication, enabling scalable production of components with controlled dimensions and reproduced features.