|
University of California, San Diego
|
“Smart Dust” – Porous Silicon Photonic Crystals
|
|
|
SUMMARY: UCSD researchers have developed a new nanotechnology (“Smart Dust”) with state-of-the-art applications in almost every field of use, ranging from biological sensing and screening to communications technology. The invention u...
|
 |
|
|
|
|
University of California, Los Angeles
|
A Method to Design Symmetrical Nanomaterials using Self-assembling Proteins
|
|
|
The emerging field of nanotechnology has allowed the ability to design and fabricate novel small materials with sizes or length scales in the nanometer range that can serve complex functions. These materials fall into a variety of architectural classes, such as compact cluster, hollow shells, tubes, two-dimensional layers, and three-dimensional molecular networks. These materials can subsequently...
|
 |
|
|
|
|
|
|
|
|
University of California, Los Angeles
|
A Thin-film Nickel-Titanium Biomedical Implantable Valve: The "NiTi Valve"
|
|
|
Even in the modern era of device technology, prosthetic heart valves have many inherent problems and limitations as surrogates for defective human heart valves. While mechanical valves remain thrombogenic despite coumadin anticoagulation therapy, valves produced from animal tissue can calcify and suffer limited longevity. Furthermore, because currently available prosthetic heart valves are extrem...
|
 |
|
|
|
|
University of California, Los Angeles
|
A Thin-film Nickel-Titanium Biomedical Implantable Valve: The "NiTi Valve"
|
|
|
Even in the modern era of device technology, prosthetic heart valves have many inherent problems and limitations as surrogates for defective human heart valves. While mechanical valves remain thrombogenic despite coumadin anticoagulation therapy, valves produced from animal tissue can calcify and suffer limited longevity. Furthermore, because currently available prosthetic heart valves are extrem...
|
 |
|
|
|
|
Stanford University
|
Alignment of Nanotubes by Beam of Particles
|
|
|
This is a method to align carbon nanotubes and other similar thin nanostructures in a desired direction using a beam of particles. The nanostructures are aligned towards the source of the beam, which is used to determine the direction of alignment precisely. The major impact of this method will be in applications where nanotubes and similar nanostructures of a precise alignment are needed. Scannin...
|
 |
|
|
|
|
Stanford University
|
Application of Nano Carbons and Nano Carbon Tubes to Create Intravascular Devices
|
|
|
This invention provides applications for the use of nano carbon architectures, such as carbon nanotubes, as backbone structures for intravascular prothesis. These applications include the implantation of carbon nanotubes for the support, replacement, or bypass of compromised vascular tissues. In addition, this invention describes the use nanotubes as delivery vehicles for biological and non biolog...
|
 |
|
|
|
|
Stanford University
|
Biological Metallic Nanowires
|
|
|
There has been a growing interest in the field of nano-scale science and technology to efficiently and economically produce molecular sized components for use in new biological and electronics applications. This invention demonstrates the synthesis of metallic nanowires using a biological approach. ...
|
 |
|
|
|
|
Stanford University
|
Carbon Nanotubes as molecular transporters and carriers for drug, gene therapy and protein delivery
|
|
|
Single walled carbon nanotubes (SWNT) are covalently modified by acid treatment to allow subsequent attachment of small molecules and proteins. The SWNT-cargo conjugate is observed to undergo internalization into both adherent and non-adherent cell lines, most likely via endocytosis. We demonstrate here the internalization of a fluorescein moiety and of a labeled Streptavidin protein, after attach...
|
 |
|
|
|
|
Stanford University
|
Carbon Nanotubes as Sensors
|
|
|
This invention is the use of single-walled carbon nanotubes (SWNTs) as sensors. It was discovered that exposure to small concentrations of molecules changed the electrical resistance of a semiconducting SWNT by several orders of magnitude. The nanotube molecular sensors operate at room temperature with reversibility and exhibit high sensitivity and fast response. ...
|
 |
|
|
|
|
|
|
|
|
Stanford University
|
Clean Catalyst Delivery
|
|
|
Preparation of single-walled carbon nanotube (SWNT) in large quantity with high purity is very important issue because of their potential in future applications, such as molecular nanoelectrocnics, field emission display, bio- and gas sensor, etc. This invention involves a novel method for the preparation of catalytic nanoparticles for the synthesis of SWNTs with high purity and high yield. This i...
|
 |
|
|
|
|
University of California, Davis
|
Consolidation of Nanocrystalline Materials with Minimal Grain Growth
|
|
|
A novel approach for the consolidation of nanocrystalline metallic powders using the Equal Channel Angular Pressing (ECAP) method has been developed by researchers at the University of California, Davis. Conventional consolidation methods currently available (i.e., HIP) have demonstrated their limitations or drawbacks. Usually, isotropic microstructures and properties are observed after HIP, which...
|
 |
|
|
|
|
Stanford University
|
Electric Field Directed Growth of Aligned Nanotubes
|
|
|
Electric fields are used to direct the growth of single-walled carbon nanotubes (SWNT). This approach enables the building of complex nanotube structures for molecular electronics. ...
|
 |
|
|
|
|
Stanford University
|
Electrically Wiring Up Carbon Nanotubes
|
|
|
Wiring up carbon nanotubes electrically is achieved in a non-invasive manner. Arrays of metal electrode pairs are first fabricated on a substrate, carbon nanotubes are then grown from electrodes to opposing electrodes to form bridges that electrically connect the electrodes. ...
|
 |
|
|
|
|
Stanford University
|
Electrochemical Metal Nano-Patterning for Erasable Memory Storage Using Ionic Conductors
|
|
|
Stanford researchers have invented a novel all solid-state nanopatterning technique that can perform under ambient conditions without involving a liquid vessel or probe-to-sample material transfer. Compared to some of the previous nanolithography processes, this novel technique offers intriguing operational simplicity and sub-100 nm feature size. Due to the swiftness of the process in generating p...
|
 |
|
|
|
|
University of California, Los Angeles
|
Electronics Integrated with Bio-Reactor Channel for Detection or Fabrication of Bio-Materials
|
|
|
Biosensors detect biological/chemical species with high selectivity on the basis of molecular recognition, rather than the physical properties of analytes. Many types of these biosensing devices have been developed in recent years, including enzyme electrodes, optical immunosensors, ligand-receptor amperometers, and evanescent-wave probes. Typical sensor-based methods for identifying biological a...
|
 |
|
|
|
|
University of California, Los Angeles
|
Electronics Integrated with Bio-Reactor Channel For Detection or Fabrication of Bio-Materials
|
|
|
Biosensors detect biological/chemical species with high selectivity on the basis of molecular recognition, rather than the physical properties of analytes. Many types of these biosensing devices have been developed in recent years, including enzyme electrodes, optical immunosensors, ligand-receptor amperometers, and evanescent-wave probes. Typical sensor-based methods for identifying biological a...
|
 |
|
|
|
|
University of California, Davis
|
Enzyme Catalyzed Metallic Nanoparticle Synthesis at Room Temperature
|
|
|
Metallic nanoparticles are a core component of modern nanotechnology, yet their production still suffers major limitations. The heart of this new approach lies in the precise control of the number of nucleation sites by placing the metal ions to be reduced at the active sites of enzymes that catalyze their reduction. Such nucleation control has been extremely difficult to achieve in typical soluti...
|
 |
|
|
|
|
Stanford University
|
Functionalization of Carbon Nanotubes for Biocompatibility and Biomolecular Recognition
|
|
|
This functionalization approach prevents non-specific binding on nanotubes and at the same time introduces selective protein binding sites on nanotubes. This functionalization enables nanotube-based electrical biosensors capable of detecting protein through highly specific binding with receptors or proteins immobilized on nanotube surfaces. ...
|
 |
|
|
|
|
Stanford University
|
Gravitational Reference Sensor
|
|
|
Dr. Ke-Xun Sun and Professor Byer at Stanford University have developed an all reflective grating based Gravitational Reference Sensor (GRS). This invention provides a method with higher precision distance measurement and timing compared to existing capacitive sensing method. The implementation of grating as beam splitter results in reducing the background signal and consequently increasing the pr...
|
 |
|
|
|
|
Stanford University
|
Harmonic Force Microscopy using Flexural Resonance
|
|
|
Harmonic cantilevers provide new contrast mechanism for imaging and characterizing surfaces on the nanoscale. When a harmonic cantilever is used as a replacement for a regular cantilever in tapping-mode Atomic Force Microscopy, energy is efficiently transferred from the fundamental vibration mode to a specific higher order mode of the harmonic cantilever. The vibrations of the higher mode, which c...
|
 |
|
|
|
|
University of California, Los Angeles
|
Hexagonal Nanoporous Ge Thru Surfactant Driven Self Organization of Zintl Clusters
|
|
|
Surfactant templating is a method that has been successfully employed to produce complex periodic inorganic structures for a wide range of oxide-based material. These porous oxides are being explored for a range of applications that center around molecular size selection or the production of new optical materials. However, there are challenges to the production of non-oxide based semiconducting f...
|
 |
|
|
|
|
University of California, Davis
|
High Power Density Supercapacitors
|
|
|
Researchers at the University of California, Davis have developed high power density supercapacitors with significantly small equivalent series resistance (ESR). These devices have achieved a maximum specific power density of 30kW/kg and exhibited rectangular cyclic voltammograms even at a high scan rate of 1000 mV/s. The latest results show incredible frequency response: a knee frequency of about...
|
 |
|
|
|
|
University of California, Los Angeles
|
Interference Lithography by Using Resonant Surface Plasmons
|
|
|
Nanolithography has numerous potential applications in nanotechnology. Conventional optical lithography cannot work at the nanoscale due to the diffraction nature of light. The current state of the art is to use X-ray, E-beam, or focused ion beam lithography. To etch line widths of widths narrower that the working wavelength of frequency λ, two interfering laser beams can be used. Unfortun...
|
 |
|
|
|
|
Stanford University
|
Large Scale Synthesis of Single-Walled Nanotubes
|
|
|
This invention is a way to obtain high-quality single-walled carbon nanotubes. This technique further can confine growth of such nanotubes to specifically designated locations. ...
|
 |
|
|
|
|
University of Southern California
|
Layered Nanofabrication
|
|
|
This technology offers a new rapid prototyping and fabrication process that operates at the nanoscale. The process is capable of producing 3-D solid nanoscale objects with very general geometries, while other known nanofabrication methods are limited to 2-D....
|
 |
|
|
|
|
Stanford University
|
Low Temperature Growth of Single Wall Carbon Nanotube with PECVD
|
|
|
This invention introduces a novel technique for the growth of desired Carbon Nano Tube (CNT) using plasma Enhanced Chemical Vapor Deposition (PECVD). This lower temperature process compared to the existing Chemical Vapor Deposition process enhances the compatibility of CNT structure with CMOS circuits for potential hybrid electronics. The nature of the plasma process preferentially allows the form...
|
 |
|
|
|
|
Stanford University
|
Massive Arrays of Integrated Nanotubes for Electronic Noses and Biochips
|
|
|
Since the recent anthrax threats, Tokyo subway sarin attacks, and Desert Storm, the need for sensors that can rapidly detect a variety of chemical species is becoming critical. This invention introduces integrated nanotube sensor arrays that can act as "nano-electronic noses," capable of detecting various chemical and biological molecules. As opposed to current optical chips with their complex rea...
|
 |
|
|
|
|
|
|
|
|
|
|
|
|
University of California, Los Angeles
|
Method to Manufacture Structures and Devices in Carbon Nanotubes
|
|
|
Carbon nanotubes exhibit attractive properties that have potential applications in numerous scientific and engineering applications. However, the limitations of current fabrication methods have hindered the progress towards more complicated structures, thereby curbing the attractive mechanical and electrical properties of nanotubes. UCLA scientists have proposed a novel method of direct manufactu...
|
 |
|
|
|
|
Stanford University
|
Multiwall Carbon Nanotube Field-Effect Device
|
|
|
A field effect device is produced by subjecting a multiwall carbon nanotube to a gating electric field. The applied field modulates the energy gap of the nanotube and thereby changes the electrical conductivity and radiation absorption characteristics of the nanotube. This modulation mechanism has been investigated by tight binding and density functional theory simulations. ...
|
 |
|
|
|
|
University of California, Los Angeles
|
Nanoelectronic Devices Based On Nanowire Networks
|
|
|
Current, mature semiconductor technologies allow for altering of electrical conducting properties through doping. While state of the art techniques allow for precise doping, manufacturing requires large, expensive capital equipment, and resultant semiconductors are quite rigid and sensitive to defects. Previous attempts at creating nanowires have proved difficult, as doping and controlling their ...
|
 |
|
|
|
|
University of California, Los Angeles
|
Nanoscale Electromolecular Lithography (NEL)
|
|
|
Current lithographic solution face difficult challenges as features sizes are reduced to nanoscale dimensions. A current approach is to use imprints and molds. However, yield and defect problems occur from the interaction between the old and the polymer resist during this process. Dip pen nanolithography is limited by the tip diameter, the width of the meniscus and the submicron scale of the prob...
|
 |
|
|
|
|
Stanford University
|
Nanotubes for Drug Delivery and Selective Cancer Cell Destruction
|
|
|
This invention introduces a new method for drug delivery and cancer therapy using single wall nanotubes. Specifically, the transport and delivery capabilities of carbon nanotubes can be applied for various biological cargoes. The intrinsic optical property of SWNT can be tuned to trigger cargo release or cell killing. Functionalization of the nanotubes with tumor markers can lead to the applicatio...
|
 |
|
|
|
|
University of California, Los Angeles
|
Noncovalent Side-Wall Functionalization of Nanotubes
|
|
|
SWNTs, despite their useful potential, have not been integrated into applications, in part because of the lack of controlled solubility in solvents. Covalent functionalization of the sidewalls for the SWNTs provides soluble samples but at the cost of damaging the sidewalls, thereby diminishing the mechanical and electronic properties of the SWNT....
|
 |
|
|
|
|
University of California, Los Angeles
|
Organic Thin Film Memory Device
|
|
|
Due to recent advances in materials technology, organic electronic devices are proven for applications such as light emitting diodes, solar cells and active electronics devices. This invention extends prior work (UCLA Case 2003-262) regarding electrical bistability of organic thin films for nonvolatile memory applications....
|
 |
|
|
|
|
Stanford University
|
Pattern Growth of Nanotubes
|
|
|
Patterned growth of massive arrays of carbon nanotubes is achieved at the wafer scale. Growth by chemical vapor deposition of methane (CH4) is found to be sensitive to the amount of H2 co-flow, undergoing pyrolysis, growth, and inactive reaction regimes with increased H2 addition. Understanding of the chemistry enables synthesis scaleability to wafer-level for molecular electronics. ...
|
 |
|
|
|
|
University of California, Davis
|
Preparation and Use of Gold Glyconanoparticles
|
|
|
Researchers at the University of California, Davis, have created novel glyconanoparticles for the biological evaluation of recombinant gp120 interactions.Viral adhesion and infection are often mediated through polyvalent interactions involving viral proteins and cellular receptors. To date, there has been minimal understanding of the molecular basis of polyvalent interactions. However, recent deve...
|
 |
|
|
|
|
Stanford University
|
Quantum Design of Nanotube Chemical Sensors
|
|
|
In addition to their extraordinary chemical, electrical, and mechanical properties, carbon nanotubes have recently proved effective as chemical sensors, able to detect small concentrations of molecules, such as NO2 and NH3, with high precision and rapid response times. However, current methods are still unable to detect many other pollutant molecules. This invention introduces a new variant of the...
|
 |
|
|
|
|
Stanford University
|
Reversible Nanotube-based Chemical Sensors
|
|
|
This novel invention exploits the photo-physical and chemical properties of nanotubes in photo-detectors to create a highly reversible miniature chemical sensor. Different molecules can be adsorbed onto single-walled carbon nanotubes (SWNTs). These molecules photo-desorb under illumination causing the electrical properties of the nanotubes to change. The nanotubes are highly sensitive and allow fo...
|
 |
|
|
|
|
University of California, Berkeley
|
Room Temperature Bonding Technique for MEMS
|
|
|
A new adhesive bonding process for multi-wafer fabrication has been developed and tested. The process overcomes the disadvantages of the traditional MEMS wafer bonding processes that have been borrowed from the IC industry. The salient features of the new bonding technique include: (i) low/room temperature; (ii) multi material compatibility; (iii) reversibility; and (iv) biocompatibility. The proc...
|
 |
|
|
|
|
University of California, Berkeley
|
Room Temperature Bonding Technique for MEMS
|
|
|
A new adhesive bonding process for multi-wafer fabrication has been developed and tested. The process overcomes the disadvantages of the traditional MEMS wafer bonding processes that have been borrowed from the IC industry. The salient features of the new bonding technique include: (i) low/room temperature; (ii) multi material compatibility; (iii) reversibility; and (iv) biocompatibility. The proc...
|
 |
|
|
|
|
University of California, Berkeley
|
Room Temperature Bonding Technique for MEMS
|
|
|
A new adhesive bonding process for multi-wafer fabrication has been developed and tested. The process overcomes the disadvantages of the traditional MEMS wafer bonding processes that have been borrowed from the IC industry. The salient features of the new bonding technique include: (i) low/room temperature; (ii) multi material compatibility; (iii) reversibility; and (iv) biocompatibility. The proc...
|
 |
|
|
|
|
Stanford University
|
Self-oriented Regular Arrays of Carbon Nanotubes
|
|
|
This invention is a way to create large-scale regular arrays of carbon nanotubes that are self-oriented on silicon substrates. The nanotubes are up to hundreds of microns long and self-align normal to the substrate. They are directly synthesized and their scale-up is entirely compatible with existing processes of semiconductor technology. ...
|
 |
|
|
|
|
University of California, Los Angeles
|
Shape Encoded Particles (SEPS) for Use in Solution Arrays and Decoding Software
|
|
|
Microarrays are widely used as a high throughput analysis of gene expression. However, the ability of these tests for use in multiplex reactions remains limited, while the costs are relatively high. Solution arrays using encoded substrate particles offer a cheaper and more flexible alternative to traditional microarrays....
|
 |
|
|
|
|
University of California, Davis
|
Silicon-Cobalt Nanostructures and Nanowires
|
|
|
University of California, Davis researchers have developed a method to synthesize novel self-aligned nanostructures (SANs) of single-crystalline cobalt silicide composition. The method can be used to produce metallic and semiconducting nanostrips of extremely small width and height dimensions (e.g., 3 nm by 20 nm) and with lengths of various sizes (e.g., 40 to 8000 nm). Under appropriate temperatu...
|
 |
|
|
|
|
Stanford University
|
Single-walled Carbon Nanotubes as Biological and Chemical Sensors
|
|
|
This invention involves a novel method of creating and using functionalized single-walled carbon nanotubes (SWNTs) as a biosensor. This is achieved by the non-covalent functionalization of the sidewalls of SWNTs and subsequent immobilization of various biological molecules onto these nanotubes with a high degree of control and specificity. SWNTs are molecular wires that exhibit interesting structu...
|
 |
|
|
|
|
University of California, Los Angeles
|
Superlattice Nanopattern (SNAP) of Wires and Complex Patterns
|
|
|
Similar devices to what is discussed herein are currently fabricated using photolithography and related processes often employed by the semiconductor industry. Such devices currently have features on the order of tenths of micrometers. Many companies are currently trying to reduce the sizes of wires to keep up with Moore's Law. Current alternatives include the use of X-rays, electrons, ions, or s...
|
 |
|
|
|
|
Stanford University
|
Synthesis and Scale-Up of Single-Walled Carbon Nanotube Tips
|
|
|
This invention is a method for growing a single-walled carbon nanotube onto a silicon pyramid. This is most useful when the silicon pyramid is integrated with a cantilever of a scanning probe instrument such as an Atomic Force Microscope. ...
|
 |
|
|
|
|
Stanford University
|
System for Manufacturing Carbon Nanotubes
|
|
|
This invention introduces a novel system for manufacturing of carbon nanotubes. The configured system is arranged to grow carbon nanotube device via catalyst islands. Manufactured carbon nanotube devices are useful in a variety of implementations and applications, such as in an atomic force microscope (AFM), in resonators and in electronic circuits. This method is particularly useful in the high-y...
|
 |
|
|
|
|
Stanford University
|
Trapping Nanoscale Objects in Solution
|
|
|
Professor William Moerner, and Graduate Student Adam Cohen at Stanford have developed a novel device, the "Anti-Brownian ELectrophoretic (ABEL) Trap" that allows a user to trap a single nanoscale object, such as an individual biomolecule in solution at ambient temperature, and then to position the trapped object with nanoscale resolution. This novel device works by monitoring the Brownian motion o...
|
 |
|
|
|
|
Stanford University
|
Wafer Scale Fabrication of Carbon Nanotube AFM Tips
|
|
|
Synthesis of single-walled carbon nanotubes (SWNTs) is achieved at the wafer scale. A simple patterning technique is used to selectively place catalyst on tips. Chemical vapor deposition on the wafer scale is used to grow SWNTs protruding from the tips. The nanotubes are then shortened to obtain mechanically rigid probe tips. ...
|
 |
|