Sub-10nm Lithography

  1. Sub-10 nm Lithography   Since 1960s, the number of transistors in an integrated circuit has roughly doubled every two years, showing exponential growth in the capabilities of electronic devices. This tendency has been sustained over the past several decades on the basis of continuous advancements in manufacturing technologies including optical lithography. However, photolithography is reaching a physical limit in resolution and thus, alternative technologies such as extreme ultraviolet (EUV) lithography, nanoimprint lithography, interference lithography and directed...

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Sub-20nm Nanotransfer Printing

    1. Sub-20nm S-nTP ■ Sub-20-nm nanofabrication through novel nanotransfer printing Nanotransfer printing (nTP) technology offers outstanding simplicity and throughput in the fabrication of transistors, metamaterials, epidermal sensors, and other emerging devices. Nevertheless, the development of a large-area sub-50 nm nTP process has been hindered by fundamental reliability issues in the replication of high-resolution templates and in the release of generated nanostructures. Our group presented a solvent-assisted nanotransfer printing (S-nTP) technique based on high-fidelity...

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Surface Enhanced Raman Spectroscopy

    ■ Surface Enhanced Raman spectroscopy (SERS) Surface-enhanced Raman scattering (SERS) is one of the most practical analysis techniques for molecular structure characterization and trace-amount detection due to unique fingerprint signals and large signal enhancement ratio. By utilizing of SERS for detection applications, we can realize.. 1.Universal molecule detection 2.Non-invasive and safe detection 3.Trace molecule detection even at single molecule level.     1. Fabrication of sub-20 nm nanopattern for SERS To maximize SERS signal intensity, fabrication of...

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Quantum Dot Photovoltaics

  Energy and environmental problems have now become major issues to be solved. There is an urgent need for renewable and environmentally-friendly energy generation system. Solar energy is enormous renewable and environmentally-friendly energy source which has potential to substitute fossil fuels. For an hour, solar energy is illuminated to Earth more than the energy consumed by humans for a year. Because of its infinite energy source, solar cell has great potential to become next-generation energy generation system. There are lots of efforts to commercialize the solar cell. The global...

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2D materials

 1. Graphene Nanostructures   Graphene, a single-atomic layer of carbon network, has been highlighted as a novel two dimensional material with their unique properties and potential applications in electronics. Due to two dimensional sp2 network of carbon in graphene, the electron shows a massless behavior which is described by the Dirac equation. This gives graphene its unique zero band gap property. However, it is possible to engender electronic band gap in graphene via fabricating graphene nanostructures such as graphene quantum dot, graphene nanoribbon and graphene nanomesh. Numerous...

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