Liu H. – Page 2 – TechConnect Briefs

Wafer Scale Fabrication of Nano Probes for Atomic Force Microscopy

Ye Q.L., Liu H., Cassell A.M., Chao K-J, Han J., NASA Ames Research Center, US

The key hurdle in nanoscience and nanotechnology is the large-scale integration of nanoscale materials with micron-scale electronics/structures to form functional devices. We report an innovative bottom-up wafer-scale fabrication approach that combines nanopatterning and nanomaterials synthesis [...]

Noncovalent Engineering of Carbon Nanotube Surfaces

Chen J., Ramasubramaniam R., Liu H., Zyvex Corporation, US

Single-walled carbon nanotubes (SWNTs), due to their novel structural, thermal, electrical, mechanical and optical properties, are expected to find applications in many fields. Pristine SWNTs are generally insoluble in common solvents, and difficult to functionalize [...]

A Low Cost Polymer Based Piezo-Actuated Micropump for Drug Delivery System

Liu H., Tay A.A.O., Wan S.Y.M., Lim G.C., Institute of Materials Research & Engineering, SG

This paper presents the design, realization and simulation of a novel polymer based check-valve micropump actuated by piezoelectric disc. Comparing with silicon substrate, polymer materials have such advantages as flexibility, chemical and biological compatibility, 3D [...]

CFD-Based PEM Fuel Cell Models and Applications

Liu H., Zhou T., University of Miami, US

In recent years, various fuel cell models based on computational fluid dynamics (CFD) have been developed at the Fuel Cell Laboratory, University of Miami. These 2-or 3-dimensional models account for all the major transport phenomena [...]

Photoluminescence and Photoluminescence Excitation Measurements of Eu-Doped Nano-Si/SiO2 Thin Films

Nery G.A., Fonseca L.F., Liu H., Resto O., Weisz S.Z., University of Puerto Rico at Rio Piedras, PR

Europium (Eu) ions are already used in significant visual technological applications. We attempted to determine if a silicon nanoparticle (nano-Si) / Europium interaction could occur. The energy transfer from nano-Si to rare earth ions has [...]