DEVELOPMENTS AT NIST POC: Marcia Salkeld (301) 975-4188. Researchers at the National Institute of Standards and Technology (NIST) have developed a number of new devices and methods involving a variety of technologies. In certain cases other parties have participated in the development of these technologies. Anyone interested in the further development of any of these technologies or in applying for a license to commercialize these technologies should send a written request for further information, referencing the NIST Docket Number and Title, to: Marcia Salkeld, National Institute of Standards and Technology, Technology Development and Small Business Program, Building 221, Room B256, Gaithersburg, Maryland 20899; Telecopy: 301-869-2751. This is not an announcement of a contract action or a grant. NIST Docket Number: 93-051; Title: Process For The Chemical Preparation of Bismuth Telluride and Bismuth Telluride Composite Thermoelectric Materials; Description: An aqueous chemical route to a bismuth telluride precursor is described. Bismuth telluride is readily generated from the precursor by hydrogen reduction at 275 deg C, and exhibits a particle size of about 100nm. The process provides fine-particle, polycrystalline bismuth telluride from commonly available chemicals in yields exceeding 90%. NIST Docket Number: 93-059; Title: Strut Structure and Rigid Joint Therefor; Description: This NIST invention is a system of mechanical joints and clamps for assembling lightweight struts into a rigid structure. The system is designed to hold several large objects, such as telescope mirrors, in precise and stable positions relative to each other. NIST Docket Number: 93-061; Title: Method and Apparatus for Monitoring Resin Crystallization and Shrinkage During Polymer Molding; Description: This device is an optical fiber sensor which can be inserted into the mold cavity of an injection molding machine. The sensor can ``view'' a polymer resin during the mold filling and resin cooling phases of the process cycle. By detecting light reflections from the polymer and back surface of the mold, it is possible to monitor crystallization and shrinkage of the resin. NIST Docket Number: 93-062; Title: Electrochemical Detection of Carcinogens by DNA Intercalation; Description: Polyaromatic compounds can be detected electrochemically by displacement of an electroactive DNA intercalated agent through competition with the compound under investigation. Electroactive DNA intercalating agents can be sequestered into double stranded DNA, where they become unavailable for electrochemical detection. Addition of a competing agent will displace the electroactive species such that it can be detected at an electrode surface amperometrically. Technology available for commercial use without a license. NIST Docket Number: 94-004; Title: Electromagnetic Acoustic Transducer and Methods of Determining Physical Properties of Cylindrical Bodies Using an Electromagnetic Acoustic Transducer; Description: An encircling electromagnetic-acoustic transducer provides a means of exciting and detecting specified types of ultrasonic resonant vibrations in cylindrical metallic objects. This device is useful for a variety of sensing applications where material properties or external parameters must be determined.

Loren Data Corp. http://www.ld.com (SYN# 0707 19950517\SP-0002.MSC)