In technology, soft lithography is a family of techniques for fabricating or replicating structures using "elastomeric stamps, molds, and conformable photomasks".[1] It is called "soft" because it uses elastomeric materials, most notably PDMS.
Soft lithography is generally used to construct features measured on the micrometer to nanometer scale. According to Rogers and Nuzzo (2005), development of soft lithography expanded rapidly from 1995 to 2005. Soft lithography tools are now commercially available.[2]
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Video 27: Soft Lithography Case Study
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Mod-01 Lec-16 Soft Lithography - I
Transcription
Types
- PDMS stamp
- Microcontact printing
- Multilayer soft lithography
- Nanosphere lithography
- Patterning by etching at the nanoscale
Advantages
Soft lithography has some unique advantages over other forms of lithography (such as photolithography and electron beam lithography). They include the following:
- Lower cost than traditional photolithography in mass production
- Well-suited for applications in biotechnology
- Well-suited for applications in plastic electronics
- Well-suited for applications involving large or nonplanar (nonflat) surfaces
- More pattern-transferring methods than traditional lithography techniques (more "ink" options)
- Does not need a photo-reactive surface to create a nanostructure
- Smaller details than photolithography in laboratory settings (~30 nm vs ~100 nm). The resolution depends on the mask used and can reach 6 nm.[3]
See also
References
- ^ In the words of Rogers and Nuzzo, p. 50, as cited in "Further reading"
- ^ "Research Micro Stamps: Commercially available micro stamps on tv". RMS. Retrieved 2017-01-17.
- ^ Waldner, Jean-Baptiste (2008). Nanocomputers and Swarm Intelligence. London: ISTE John Wiley & Sons. p. 93. ISBN 978-1-84704-002-2.
Further reading
- Xia, Y.; Whitesides, G. M. (1998). "Soft Lithography". Angew. Chem. Int. Ed. Engl. 37 (5): 551–575. doi:10.1002/(SICI)1521-3773(19980316)37:5<550::AID-ANIE550>3.0.CO;2-G. PMID 29711088. Archived from the original on 2011-08-12.
- Xia, Y.; Whitesides, G. M. (1998). "Soft Lithography. In". Annu. Rev. Mater. Sci. 28: 153–184. Bibcode:1998AnRMS..28..153X. doi:10.1146/annurev.matsci.28.1.153.
- Quake, S. R.; Scherer, A. (2000). "From micro- to nanofabrication with soft materials". Science. 290 (5496): 1536–1540. Bibcode:2000Sci...290.1536Q. doi:10.1126/science.290.5496.1536. PMID 11090344. S2CID 1386132.
- Rogers, J. A.; Nuzzo, R. G. (2005). "February). Recent progress in soft lithography. In". Materials Today. 8 (2): 50–56. doi:10.1016/S1369-7021(05)00702-9.
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This page was last edited on 13 February 2024, at 21:30