Loren Data's SAM Daily™

FBO DAILY ISSUE OF JUNE 09, 2006 FBO #1656
MODIFICATION

66 -- Vacuum Compatible Piezo Stage

Notice Date

6/7/2006
 

Notice Type

Modification
 

NAICS

339111 — Laboratory Apparatus and Furniture Manufacturing
 

Contracting Office

Department of Commerce, National Institute of Standards and Technology (NIST), Acquisition Management Division, 100 Bureau Drive, Building 301, Room B129, Mail Stop 1640, Gaithersburg, MD, 20899-1640
 

ZIP Code

20899-1640
 

Solicitation Number

SB1341-06-Q-0342
 

Response Due

6/9/2006
 

Archive Date

6/24/2006
 

Description

The above referenced solicitation is hereby amended to respond to technical questions submitted. The due date for quotations, Friday, June 9, 2006, at 3:30 PM local time, remains unchanged. QUESTION 1: We generally use RMS for our measurements of noise, but the solicitation does not specifically state whether this criterion of 1nm (Requirement #3) is RMS or peak-to-peak. RESPONSE #1: RMS is acceptable. QUESTION #2: In order to assess the need for heat sinking in the nanopositioning system (to draw heat away from the piezo actuator in a vacuum environment), it would be helpful to understand the intended duty cycle and the general operating frequencies to be used in that duty cycle. RESPONSE #2: The intended use is quasi-static. The primary use of the actuator will be to perform step and hold motions. For instance, traversing a total distance of 2 microns by ramping 200 nm's at a time, where each ramp is followed by a hold of several seconds. Continuous cycling of the actuator through the full range of motion is not expected. We may have applications where we employ dither signals of up to 100 Hz with an amplitude of a few nanometers. QUESTION #3: What communication protocol does the end user want to use to send the target position to the controller? If they are going to use an analog-in line, we need to know the voltage range of that input signal. We also need to know if the end user would prefer a GUI on a PC that can be used to set scan parameters. RESPONSE #3: We are willing to work with vendors standard protocols. We can provide an analog signal of plus or minus 10 Volts. We can also work with GPIB. QUESTION #4: A point of clarification regarding first natural frequency ... We assume that the requirement is intended to mean that the first translational natural frequency on the output shall be at least 2000 Hz, i.e. the transfer function of the actuator will have a first resonance greater than 2000 Hz. Is this a correct understanding of the requirement? RESPONSE #4: That is correct. QUESTION #5: Regarding the requirement for vacuum compatibility ... Please explain the intended requirements for cleaning and packaging of the system prior to delivery. We ask this because it has often been our experience that despite our efforts to provide a "clean" system, the end user will frequently handle the components in a non-clean fashion prior to inserting the stage into the vacuum chamber. Our standard process for vacuum-compatible stage systems is to completely wipe down the components with iso-propyl alcohol to remove most contaminants that would outgas in vacuum. However, the final bake-in to burn off organic contaminants prior to use in vacuum has always been (in past systems we have delivered) the responsibility of the end user. Please define the expectations in this regard. RESPONSE #5: We expect to receive a clean stage (all surfaces: an alcohol rub down is not usually sufficient to clean tapped holes) manufactured using materials compatible with operation in an environment of 1 micro Torr. The stage should arrive in a sealed bag to prevent contamination. Baking of components is not necessary at this level of vacuum. Thorough cleaning using ultrasonic techniques and a combination of organic and inorganic solvents is sufficient.
 

Place of Performance

Address: 100 Bureau Drive, Gaithersburg, MD, Mailstop 1640

Zip Code: 20899-1640

Country: USA
 

Record

SN01063943-W 20060609/060607220804 (fbodaily.com)
 

Source

FedBizOpps Link to This Notice
(may not be valid after Archive Date)

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