Nanoimprint techniques

Chao, C. Y. Guo, L. J., Polymer micro ring resonators fabricated by nanoimprint technique,... 

Mold in nanoimprint technique plays the same role as photomask in photolithography. Both NIL and S-FIL utilize hard molds to replicate patterns, which distinguish... 

An alternative approach to fabricate a superhydrophobic surface on a device is to utilize the nanoimprint technique to create nanostructures on the chip surfaces, which are coated with a thin film of hydrophobic materials. The fabrication scheme for a superhydrophobic surface using nanoimprint is illustrated in Fig. 2. To conduct nanoimprint lithography, the first step is to fabricate the stamp for nanoimprint. Previously [24-26], we demonstrated a simple technique to fabricate nanoimprint stamp by nanosphere lithography. In this process, a monodispersed polystyrene dispersion with 400 nm diameter beads (Bangs Laboratories, Inc., Fishers, IN) was... 

A polymeric waveguide-type wavelength filter based on a Bragg grating has been fabricated using a simple nanoimprint technique by Ahn et al. [170] They obtained a maximum reflection of 25 dB at 1,569 nm and the bandwidth at 3 dB was about 0.8 nm for a device length of 1.5 cm. 

A major challenge of the nanoimprint technique is to perform a correct detachment of the mold from the cured resist. Its difficulty is inherent to the high density of nanoscale protrusions patterned on the mold surface, which effectively increases the total area in contact with the UV-cured resist. Therefore, sticking between imprinted polymeric structures and the mold surface can have the three following detrimental consequences ... 

Kim, W., Yoon, K., and Bae, B.J. (2005) Nanopatteming of photonic crystals with a photocurable silica titania organic-inorganic hybrid material by a UV-based nanoimprint technique. /. Mater. Chem.,... 

A disposable plastic SERS sensor capable of achieving a 10 Raman response enhancement was fabricated by Oo et al. (2013) using roll-to-roll and nanoimprint techniques. The geometry used was based on the industry standard Klarite and was subsequently optimized for better performance. The original substrate consisted of an array of gold-coated inverted square pyramidal pits that were altered to form rectangular cones as well as varying their pitch an 8-fold improvement of sensitivity was achieved. 

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