Keyword: Nanomaterials

Briefs: Materials
Catalysts for Efficient Production of Carbon Nanotubes

Several metal alloys have shown promise as improved catalysts for catalytic thermal decomposition of hydrocarbon gases to produce carbon nanotubes (CNTs). Heretofore almost every experiment on the production of carbon nanotubes by this method has involved the use of iron, nickel, or cobalt...

Articles: Manufacturing & Prototyping
Universal Proprietary Water Purifying/ Conditioning Multimedia

Jim Jablonsky J&M Associates Hatfield, PA

This inexpensive and easily operated filter system removes heavy metals, arsenic, mercury,...

Articles: Nanotechnology

The 2007 NASA Tech Briefs National Nano Engineering Conference (NNEC), to be held November 14-15 at the Boston Marriott Copley Place, is produced for design engineers who want to know what’s...

Briefs: Materials
Nanorod-Based Fast-Response Pressure-Sensitive Paints

A proposed program of research and development would be devoted to exploitation of nanomaterials in pressuresensitive paints (PSPs), which are used on wind-tunnel models for mapping surface pressures associated with flow fields. Heretofore, some success has been achieved in measuring...

Briefs: Nanotechnology

Nanotechnology breakthroughs are happening every day. NASA Tech Briefs' Nano 2005 nano engineering conference, November 10-11 at the Marriott Boston Newton, will help you keep pace with the engineering...

Briefs: Materials
More About Arc-Welding Process for Making Carbon Nanotubes

A report presents additional information about the process reported in "Manufacturing High-Quality Carbon Nanotubes at Lower Cost"; (GSC-14601) NASA Tech Briefs, Vol. 28, No. 9 (September 2004), page 62. To recapitulate: High-quality batches of carbon nanotubes are produced at...

Briefs: Electronics & Computers

Thin, transparent layers comprising mats of carbon nanotubes have been proposed for providing lateral (that is, inplane) electrical conductivities for collecting electric currents...

Articles: Photonics/Optics

Nano-optics is a valuably novel class of technology that takes advantage of light’s unique interaction with subwavelength, nano-scale patterned materials, and nanotechnology-enabled fabrication methods to create a broadly...

Briefs: Manufacturing & Prototyping
Manufacturing High-Quality Carbon Nanotubes at Lower Cost

A modified electric-arc welding process has been developed for manufacturing high-quality batches of carbon nanotubes at relatively low cost. Unlike in some other processes for making carbon nanotubes, metal catalysts are not used and, consequently, it is not necessary to perform...

Briefs: Manufacturing & Prototyping

A low-temperature plasma process has been devised for attaching specified molecular groups to carbon nanotubes in order to impart desired chemical and/or physical properties to the...

Briefs: Manufacturing & Prototyping
Automatic Control of Arc Process for Making Carbon Nanotubes

An automatic-control system has been devised for a process in which carbon nanotubes are produced in an arc between a catalyst-filled carbon anode and a graphite cathode. The control system includes a motor-driven screw that adjusts the distance between the electrodes. The system also...

Briefs: Photonics/Optics

Electromechanical resonators of a proposed type would comprise single carbon nanotubes suspended between electrodes (see Figure 1). Depending on the nanotube length, diameter, and...

Briefs: Electronics & Computers

Capacitors in which the main dielectric layers are made from sintered nanocrystalline BaTiO3 have been fabricated and tested in an initially successful and continuing...

Briefs: Electronics & Computers

A class of developmental asymmetric electrochemical capacitors is based on (1) nonpolarizing positive electrode made of nanotructured γ-MnO2, (2) aqueous electrolyte ,...

Briefs: Electronics & Computers
Carbon Nanotubes as Anodes in Rechargeable Lithium-Ion Cells

Carbon nanotubes (also known as "bucky tubes") have shown promise for use as anode materials in rechargeable lithium-ion power cells. In comparison with graphite and other forms of carbon used under identical conditions, bucky tubes exhibit greater specific discharge capacity and...

Briefs: Robotics, Automation & Control

Small, lightweight sensors that exploit the unique characteristics of nanoceramics are being developed for use in measuring air/fuel ratios in the exhaust gas flows of advanced aircraft...

Briefs: Energy

Early experiments in a continuing research program have demonstrated that thermal batteries made from powdered solid electrode and electrolyte materials can be improved by use of smaller...

Briefs: Nanotechnology

A rapid densification technology uses nanostructured powders to produce ceramic devices and components. This technology provides ceramic monoliths and composites that can be used in the...

Trending Stories

INSIDER: Robotics, Automation & Control

Gripper Robot Can Grasp Objects from Very Fine to Large

Articles: Electronics & Computers

Z-RAM