NASA/Ames Research Center, JA:M/S 241-1, Moffett Field, CA 94035-1000

66 -- SCANNING TUNNELING MICROSCOPE SOL RFQ2-36883 DUE 091698 POC Rhonda O. Baker, Contract Specialist, Phone (650) 604-5631, Fax (650) 604-4646, Email rbaker@mail.arc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/ARC/date.html#RFQ2-36883. E-MAIL: Rhonda O. Baker, rbaker@mail.arc.nasa.gov. THIS NOTICE CONSTITUTES AMENDMENT NO. 01 TO THE COMBINED SYNOPSIS/RFQ FOR a Scanning Tunneling Microscope (STM). Companies shall acknowledge all amendment(s) in their quote. This notice serves as the official amendment to subject synopsis/RFQ and a written amendment will not be issued. The purpose of this amendment is to provide additional information regarding the specifications for the Scanning Tunneling Microscope (STM). The following questions were submitted by parties interested in RFQ2-36883. Question #1: Which is required for the STM, an Ultra High Vaccuum (UHV) or Ultra Vaccuum (UV)? Answer #1: UHV is not required. The STM must have the capability to operate in vaccuum or exchange gas. Question #2: What is the range for cooling and heating for the STM? Answer #2: The operating temperature capability should be below 2 degrees Kelvin. Question #3: What is the required maximum scanned area? Answer #3: The maximum scanning area is in the 3 to 15 micron range and able to take 6 differential inputs. Question #4: What is the range for the atomic resolution? Answer #4: The atomic resolution should be in the 1 to 2 Angstrom range. Question #5: What is the required sample size? Answer #5: The required sample size is 5x7x3 mm. The due date for receipt of offers is not extended. Companies shall provide the information stated in the synopsis/RFQ posted on the NASA Acquisition Internet Service (NAIS) on September 16, 1998. Documents related to this procurement are available over the Internet and are in Microsoft Office Suite (Word 6.0, Excel 5.0, or PowerPoint 4.0) format and reside on the World Wide Web (WWW) server which may be accessed using a WWW browser application. The WWW address or URL of the NASA/ARC Business Opportunities home page is http://procurement.nasa.gov/EPS/ARC/class.html. Posted 09/11/98 (D-SN248882). (0254)

Loren Data Corp. http://www.ld.com (SYN# 0339 19980915\66-0013.SOL)