Search Results - nanotechnology

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Solution-Based Synthesis of Functional Graphene

PSU researchers have developed techniques to covalently attach single and multiple layers of graphene sheets on substrates. The graphene can subsequently be functionalized for use in nanobiosensor applications. Procedures are being developed for the solution-based synthesis and functionalization of graphene sheets from graphite in a way that is straightforward,...

Published: 7/29/2009 | Updated: 7/20/2009 | Inventor(s): Mingdi Yan, Li Liu

Keywords(s): Chemistry, Nanotechnology

Category(s): Chemistry

Nitrogen Dioxide Gas Sensor

PSU researchers have developed a new chemical gas sensor capable of detecting nitrogen dioxide (NO2) at levels less than 100ppb (two orders of magnitude more sensitive than current chemiluminescent based NOx sensors), having a dynamic linear range of parts per million to parts per billion, and a speed of detection of 60-120 seconds. Unlike existing...

Published: 7/24/2009 | Updated: 7/20/2009 | Inventor(s): Shalini Prasad, Linda George, Divakara Meka

Keywords(s): Electronics, Nanotechnology, Sensors

Category(s): Chemistry

Mono-Layer and Multi-Layer Nanowire Networks

The fabrication of nanoscale materials (by both bottom-up and top-down routes) has been driven by miniaturization of devices and the limitations of Si COMS technology. Research using one-dimensional nano-wires and nanotubes to fabricate nanodevices has demonstrated their potential applications, including field effect transistors, nano-biosensors, solar...

Published: 7/24/2009 | Updated: 7/20/2009 | Inventor(s): Jun Jiao, Haiyan Li

Keywords(s): Nanotechnology, Physics

Category(s): Nanoscience & Microtechnologies

Nanoporous Membrane Protein Biomarker Detectors

Disease assessment can be based on one or many biomarkers – a specific gene, protein, or other biological substance – that can be used to assess disease progress and aid in determining treatment. Unfortunately, biomarker-based measurements are often slow, expensive or otherwise impractical. PSU researchers have fabricated biomarker detectors with...

Published: 7/20/2009 | Updated: 7/20/2009 | Inventor(s): Shalini Prasad, Ravi Kiran Kondama Reddy

Keywords(s): Electrical & Computer Engineering, Nanotechnology

Category(s): Nanoscience & Microtechnologies

Synthesis of Nanoscale Structures in Defined Locations

Since their discovery in 1991 by microscopist Sumio Iijima, carbon nanotubes have intrigued researchers with their structures and the applications enabled by their unique physical properties. Nanotubes exhibit high chemical resistance and mechanical strength, among other desirable physical properties. However, one ongoing challenge to exploiting these...

Published: 7/24/2009 | Updated: 7/20/2009 | Inventor(s): Jun Jiao, Lifeng Dong, Sean Foxley, David Tuggle

Keywords(s): Nanotechnology, Physics

Category(s): Nanoscience & Microtechnologies

Immobilizing Polymers on Materials

Ultrathin polymer films are of great interest and utility for their tremendous technological importance in adhesion, chemical sensors, molecular electronics, optical surfaces, and tissue engineering. Many efforts have been focused on the fabrication of uniform, ultrathin polymer films of solid substrates using non-covalent methods such as spin coating,...

Published: 7/30/2009 | Updated: 7/20/2009 | Inventor(s): Mingdi Yan

Keywords(s): Chemistry, Nanotechnology

Category(s): Nanoscience & Microtechnologies

Biosensors Through Impedance Spectroscopy

Biosensors are analytical devices that combine biologically sensitive elements with optical, chemical, or mechanical transducers for selectively and quantitatively detecting biomolecules. PSU researchers have developed a novel biosensor technology, utilizing nano-particles, that can simultaneously detect and quantify both antigens and antibodies within...

Published: 7/20/2009 | Updated: 7/20/2009 | Inventor(s): Rajendra Solanki

Keywords(s): Nanotechnology, Physics

Category(s): Diagnostics

Scanning Probe Microscope Calibration

This project involves methods for calibrating scanning probe microscopes by evaluating the two dimensional symmetry of images taken of two dimensional periodic calibration standards. Initial work on this innovation has resulted in proof of concept, and a PSU patent on this method is being filed currently. The prototype of this project is a tool that...

Published: 7/20/2009 | Updated: 7/20/2009 | Inventor(s): Peter Moeck

Keywords(s): Nanotechnology, Physics

Category(s): Diagnostics

Shear-Force Ultrasonic Near-Field Microscope

The Shear-Force Ultrasonic Near-Field Microscope (SUNM) is a nanometrology tool for surface and subsurface materials characterization, including the dynamic behavior of fluid-like mesoscopic films confined between two sliding solid boundaries. By mechanically exciting the film and detecting the resulting sound emitted, the elastic properties of the...

Published: 7/30/2009 | Updated: 6/3/2009 | Inventor(s): Andres Larosa, Richard Nordstrom

Keywords(s): Mechanical & Materials Engineering, Microscopy, Nanotechnology, Physics

Category(s): Physical Science

Carbon Nanotube Multiplexers

Miniaturization of electronic and mechanical devices has permitted complex and sophisticated products to be realized inexpensively in compact packages. Such miniaturization has developed based primarily on advances in silicon wafer processing for circuit fabrication or micro-electromechanical systems. Unfortunately, at this point in time the incremental...

Published: 7/16/2009 | Updated: 5/26/2009 | Inventor(s): Anas AL-Rabadi

Keywords(s): Electrical & Computer Engineering, Nanoelectronics, Nanotechnology

Category(s): Nanoscience & Microtechnologies