Time filter

Source Type

Torrance, CA, United States

Agency: Department of Defense | Branch: Defense Advanced Research Projects Agency | Program: SBIR | Phase: Phase II | Award Amount: 749.78K | Year: 2010

Our Phase II SBIR project will aim to develop a manufacturing path for a printed integrated circuit (PICs) platform based on thin film transistors (TFT) constructed using carbon nanotube (CNT) fabrics. The Phase II project will continue this development towards a complete TFT CNT printing platform via the demonstration of TFT devices and circuits such as a CNT complementary transistor pair (n- and p-type), inverter circuits, ring oscillator circuits and RF (radio frequency) transistors. These developments will lead towards the pathway in prototyping ink-jet printed biosensors for hormone detection. Essential technical challenges that will be addressed within Phase II include scaling the purification of semiconducting CNT inks for manufacturing, development of stable n-type doping methods, the development of a TFT gate stack and the optimization of TFT device and circuit printing. Our ultimate goal is to develop a simple and low-cost CNT ink-jet printing platform where one can simply print devices, sensors or circuits with a push of a button.

Agency: Department of Defense | Branch: Army | Program: STTR | Phase: Phase I | Award Amount: 99.98K | Year: 2011

We aim to undertake a Phase I study of multiferroic heterostructure thin film composite materials (CoFeB / PMN-PT) and their applications in high frequency (>10GHz) microwave passive circuit building blocks. In this Phase I investigation, Aneeve Nanotechnologies together with Prof Charles Ahn (Yale University) and Dr. Pedram Khalili (UCLA) will develop multiferroic heterostructure systems to demonstrate magneto-electrically tunable RF isolators. The project will consist of material sputter deposition (CoFeB/PMN-PT), material characterization (MOKE, SQUID, SEM, AFM), device design / fabrication (metallization, etching) and device RF testing (GHz range). Within Phase 1 we envisage to fabricate 2 batches of 20 devices focusing on key figures of merit.

Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase II | Award Amount: 769.86K | Year: 2012

ABSTRACT: Our Phase II project on"Carbon Nanotube (CNT) Based Electronic Components for Unmanned Aircraft Systems (UAS)"will aim to model, design, fabricate, optimize and characterize RF CNT devices and circuits that are critical for RF transceiver applications in radar, communications and a variety of military systems within Unmanned Aircraft Systems. The goal of Phase II will be to develop our CNT RF FET T-gate device into a manufacturable prototype with improved capabilities beyond the state of the art with respect to linearity and power dissipation. Within Phase I our team fabricated T-gate based RF devices/circuits achieving device cut-off frequencies of 20GHz with unity power gain of 10GHz which is the highest reported extrinsic performance of CNT RF device report in the public domain. In Phase II, we will improve our large signal device model to include linearity and noise components. This will allow optimization of CNT FET design, leading to CNT FET RF circuit design and implementations. Our fabrication approach consists of fabricating supporting/peripheral CMOS passives and integrating our"in-house"CNT as a post-CMOS process. Our characterization will obtain linearity results such as IIP3, OIP3, as well as noise performance. BENEFIT: A key driver of this project aims at improving unmanned aircraft electronics systems. Given the use of high powered RF systems that includes various data links, command and control communications, RF sensors, radar and line of sight and beyond line of sight sensors and communications, much improvement in increased battery life and increased flight time can be obtained by use of CNT RF FET devices. Furthermore, such motivational factors are relevant for all military mobile communication and"electronic heavy"equipment units such as the soldier (lighter communication handheld devices) and naval equipment (lighter & more mobile). Advances from this proposal have the potential to revolutionize the $60 billion analog and mixed signal semiconductor markets. In particular, this technology will directly impact critical RF front end components used in state-of-the-art transceiver architectures. Superior low power and highly linear device will impact the following market segments: Low-Noise Amplifiers (LNAs) RF amplifiers primarily used in communication systems to amplify weak signals captured by an antenna. Broadband Amplifiers RF amplifiers with a flat response over a wide range of frequencies. RF Power Amplifiers RF amplifiers that convert a low-power radio frequency signal into a larger signal for driving the antenna of a transmitter. RF & Microwave Amplifiers Used for high-power amplification at low microwave frequencies. Other opportunities include mixer circuits and VCOs.

A process for the cleaning of carbon nanostructure and similar materials and structures for removal of surfactant chemicals. The process includes washing the carbon nanostructures with concentrated acetic acid which may be glacial acetic acid. The cleaning process is also considered in carbon nanostructure film preparation with deposition of carbon nanostructures in solution with surfactant chemicals before the washing. Possible surfactants include sodium cholate (SC) and sodium dodecyl sulfate (SDS). Carbon nanostructure deposition on a substrate may be by various printing methods.

Agency: NSF | Branch: Standard Grant | Program: | Phase: | Award Amount: 142.95K | Year: 2012

This Small Business Innovation Research Phase I project aims to undertake a feasibility study of printing ultra-pure semiconducting and metallic single-walled carbon nanotube (SWCNT) inks as channel materials and electrodes of thin-film-transistors, and to fabricate all-SWCNT circuits such as inverters (< 5 V) and ring oscillators (> 1 kHz) in two-dimensional (2-D) and three-dimensional (3-D) architectures. The current trend of increasing electronic function per area, offering optical transparency, flexibility and lower cost, is driving products to be produced using printed electronics. This project will leverage existing inkjet printing technologies to implement all-SWCNT thin-film transistors and integrated circuits. To increase areal functional density and overcome interconnect parasitics, this project will aim to develop all-SWCNT printed devices in a 3-D architecture interconnected with metallic SWCNTs that will enable complete circuit transparency of the printed electronics for optoelectronic and display applications. Areal functional density will be increased, and functionalities such as signal delay and power consumption will be improved as a result. Printed integrated circuits based on transistors constructed and interconnected using single-walled carbon nanotubes (SWCNTs) are highly desirable for low cost, vacuum-less, scalable, and flexible applications such as backplane displays, radio frequency identification tags, electronic paper and disposable electronics.

The broader impact/commercial potential of this project is all-SWCNT thin-film transistors (TFTs) and circuits of fully-transparent, flexible, dense materials. Creation of these devices will enable products in backplane displays and solar equipment, non-volatile memories, disposable electronics, and semiconductor manufacturing and will impact a plethora of low-cost consumer electronics products. Using metal electrodes compromises a circuits transparency, flexibility, and mechanical strength. Our all-SWNCT devices will overcome these limitations, as no solid, opaque materials will be employed. This project has the potential to greatly augment the printed electronic industry that is expected to grow to $24 billion in 2015, with an astonishing current growth rate of over 30% per year.

Discover hidden collaborations