NanoTechnology: Materials, Processes & Devices

Research that includes:

  • Development of nanostructure fabrication technology
  • Nanomagnetics, Microphotonics
  • CMOS Integrated Nanowires/Nanotubes (CMOS-Inn)

BPN487: QES: High-Resolution Direct Patterning of Nanoparticles and Polymers by a Template-Based Microfluidic Process

Michael T. Demko
2012

High-resolution patterns of nanoparticles and polymers are created on a variety of substrates using a template-based microfluidic process. A rigid, vapor-permeable polymer mold is created by polymerizing 4-methyl-2-pentyne and solvent casting the resulting polymer. The mold is pre-filled with solvent by pressing into a coated substrate, and then filled with nanoparticle or polymer ink by permeation pumping. This allows high resolution patterning with good control over the three-dimensional geometry in a completely additive process with no residual layer or etching required. This...

BPN598: Toward Silk-based Biomedical Devices

Brendan W. Turner
Frank B. Myers
2012

Although silk is commonly known as a fiber, dissolved silk protein has recently received significant attention for its use in creating biocompatible, biodegradable, and mechanically tough materials. We have discovered that reconstituted silk fibroin (RSF) is an excellent material for molding of nano- and micro-scale patterned features. RSF alleviates several problems seen with current polymers used for micromolding (e.g. PDMS), such as device collapse and feature rounding. We have fabricated stable silk nano- and microstructures with aspect ratios of ~10 (height to diameter) where...

BPN567: Compound Semiconductor on Insulator (XOI) FETs

Rehan R. Kapadia
Kuniharu Takei
Hui Fang
Steven Chuang
2012

Due to their high mobility, the integration of compound semiconductors on Si has been actively studied over the past several years. This integration, however, presents significant challenges. The conventional method of addressing this problem consists of growth of multiple epilayers of materials to address the lattice mismatch between Si and the desired semiconductor, leading to highly complex fabrication techniques. Here we demonstrate high performance compound semiconductor on insulator (XOI) field effect transistors (FET) consisting of ultra-thin InAs nanoribbons (NR) on insulator...

BPN554: TiO2 Nanoswords for Clean Energy Applications

Heather C. Chiamori
2012

The uniquely shaped titanium dioxide nanoswords are studied for energy and environmental applications. These nanostructures are synthesized using both induction heating and furnace-based methods.

Project end date: 08/16/12

BPN496: Chemomechanical Nanomachine for Artificial Biomolecular Signal Transduction and Drug Delivery

Gabriel J. Lavella
2012

We have developed a class of nanomachine that can rationally designed to chemomechanicaly respond to user specified antigenic biomolecules. Our long term goal is to demonstrate that these devices can be employed to achieve highly localized controlled of the cell signaling network.

Project end date: 08/16/12

BPN594: QES: Fast, High-Throughput Micro, Nanoparticle Printing with Tunable Resolution & Size

Sun Choi
2012

We report a novel technique to print micro, nanoparticle assembly with tunable resolution (from several micron to hundreds micron) by using porous silicon membrane-based printing head. Creating regular, repetitive and well-defined three-dimensional patterns of particle assembly in targeted area is a major bottleneck in various applications such as the fabrication of three-dimensional photonic crystals, printed electronics on flexible substrates, colloidal quantum-dot based devices for display, plasmonics and etc. In this presented work, micro, nanoparticles are printed via porous...

BPN636: Extremely Elastic Strain Gauges via Nanotube Percolation Poisson Capacitors

Daniel J. Cohen
2012

There is a growing need for stretchable electronics and sensors, and so we have developed a best-in-class stretchable strain gauge designed to meet this challenge. Our device works by measuring capacitive changes in parallel networks of carbon nanotubes separated by an elastomer. The device supports strains up to 100% with less than 3% variability over 3000 cycles, and does so at a materials cost of under 50 cents/sensor. The sensitivity is 0.99, while the theoretical maximum for a stretchable gauge is 1. By contrast, metal-foil gauges (the current standard) can only sustain strains...

BPN533: Nanomaterial-Based Artificial Skin Sensor

Kuniharu Takei
Toshitake Takahashi
Chuan Wang
2012

Flexible large-scale devices are of great interest for wearable human interface applications. We have developed a technique of "uniform nanomaterial patterning" for the integration of high- performance inorganic nanomaterials on user-defined substrates. This project is to realize large scale flexible multi-functional electronics by utilizing nanomaterials such as nanowires, nanotubes, and nanoparticles. As one of applications, we here demonstrate mechanically flexible large scale high sensitive multi-functional artificial skin by proposing different types of sensors such as a...

BPN490: QES: Microfluidic Reactors for Controlled Synthesis of Monodisperse Nanoparticles

E. Yegan Erdem
2013

The goal of this project is to design a microfluidic system to synthesize monodispersed nanoparticles. Two microreactors are designed for controlled synthesis of monodisperse nanoparticles. Our first microreactor works by mixing two reagents inside a droplet to synthesize nanoparticles whereas the second microreactor is designed to achieve monodispersity by having thermally isolated zones for nucleation and growth processes and incorporating a two phase flow system to assure uniform reaction conditions. This reactor is fabricated in silicon and it is capable of handling high...

BPN469: Ultra-Short Channel 1D-2D Compound Semiconductor on Insulator (XOI) FETs

Steven Chuang
Kuniharu Takei
2013

Recently, compound semiconductor on insulator(XOI)has risen as a promising platform for next generation high performance electronics, as it inherits advantages from both SOI and high mobility III-V materials. In order to test the performance limit of this platform, we plan on fabricating ultra-short channel XOI FETs. This project will involve various controlled experiments to better understand the underlying physics of XOI FETs, thus allowing us to progress towards the ultimate XOI FET.

Project end date: 08/16/13