Nanoimprint lithography and physical vapor deposition were combined to fabricate large-area homogeneously patterned SERS-active substrates with tunable surface plasmon resonances. The plasmon shift observed was connected to the surface nanotopography since (a) the SERS-active nanoparticles on all the substrates investigated were shown to be chemically and structurally similar and (b) the SERS spectra of the analyte investigated were essentially identical for all samples. In addition, the tunability of surface nanotopography was shown to boost the SERS effect via optimal coupling between the substrate's SPR and the incident laser line.

Nanoscale batteries with anode-Li4Ti5O12 (LTO) and cathode-LiFePO4 (LFP) have shown a significant potential to develop long-life and high-rate Li-ion batteries.

We developed a hybrid nanoimprint-soft lithography technique with sub-15 nm resolution. It is capable of patterning both flat and curved substrates. The key component of the technology is the mold, which consists of rigid features on an elastic poly(dimethylsiloxane) (PDMS) support. The mold was fabricated by imprinting a reverse image onto the PDMS substrate using a UV-curable low-viscosity prepolymer film. Patterns with sub-15-nm resolution were faithfully duplicated on a flat substrate without applying external pressure. Gratings at 200 nm pitch were also successfully imprinted onto the cylindrical surface of a single mode optical fiber with a 125 µm diameter.