University of Central Florida – Page 3

An integrated NMR/nanosensor system for sensitive detection of environmental toxins and harmful microbes

Perez J.M., Fries D.P., Hickman J.J., University of Central Florida, US

The use of nanoparticles and NMR detection technologies has lead to significant improvements in sensitivity. Nanoparticles have many useful optical and electronic properties derived from their small size. When coupled to affinity ligands, these materials [...]

Quantum Dots for Multimodal Bioimaging and Sensing Applications

Santra S., Yang H., Sabui S.K., Sharma P., Holloway P.H., Walter G.A., Moudgil B.M., Scott E., University of Central Florida, US

Fluorescent quantum dots (Qdots) have demonstrated their potential in diagnostic bioimaging applications in vitro. For in vivo bioimaging applications, however, the embodiment of additional properties such as paramagnetism onto the same fluorescent probes is highly [...]

Compact Modeling of Spiral Inductors for RF Applications

Chen J., Liou J.J., University of Central Florida, US

Recent growth in RF applications has increased the use of spiral inductors and thus demanded a more accurate model for such devices. In this paper, we develop a compact model for spiral inductors with symmetrical [...]

Effect of Surface Hydration and Interfusion of Suspended Silica Nanoparticles on Heat Transfer

Milanova D., Wu X., Kumar R., University of Central Florida, US

Nanofluid suspensions enhance thermal conductivity and the heat transfer. The authors have previously shown that the Critical Heat Flux (CHF) of NiChrome wire in a silica nanofluid can be increased by 200% compared to conventional [...]

A Behavior of Protein Adsorption on Poly(Ethylene Glycol)-Modified Surfaces under Flow Conditions at Relatively Low Concentrations for Microfluidics Systems

Chun C-J, Lenghaus K., Riedel L., Bhalkikar A., Hickman J.J., University of Central Florida, US

Microfabrication technology has been used to create new microfluidics systems for bioanalytical and medical device applications in the last decade. The handling of relatively small amounts of analytes, at significantly lower concentrations, combined with the [...]

Reflex-arc on a chip: An in silico cell culture analogue

Wilson K.A., Das M., Molnar P., Hickman J.J., University of Central Florida, US

To overcome the shortcomings of in vitro and animal models we are developing a microscopic cell culture analogue (microCCA) of the spinal reflex-arc. The present work draws on advances in a wide variety of technical [...]

Compact Modeling of Four-Terminal Junction Field-Effect Transistors

Liou J., University of Central Florida, US

This paper presents a physics -based compact model for a four terminal (independent top and bottom gates) junction field-effect transistor (JFET). The model describes the JFET’s dc and ac characteristics with a high degree of [...]

Development of Self-Assembled Robust Microvalves with Electroform Fabricated Nano-Structured Nickel

Li B., Chen Q., University of Central Florida, US

The microvalve for the hydraulic actuatora need large flow rate (>10 cc/second, displacement related), high-pressure support ability (>10 MPa) and a high operational frequency (>10 kHz) [1, 2]. Microvalves can match the piezoelectric material’s frequency, [...]

Micromachined Nanocrystalline Silver Doped Tin Oxide Hydrogen Sulfide Sensor

Gong J., Chen Q., Lian M-R, Liu N-C, University of Central Florida, US

We report here an ultra high sensitive micromachined hydrogen sulfide gas sensor with nanocrystalline thin (100nm) silver doped SnO2 film. A polymeric sol-gel process has been successfully developed in fabricating the thin SnO2 nanofilm as [...]