[time-nuts] Mini Magnetic Sensor May Have Biomedical, Security Applications

Robert Lutwak RLutwak at Comcast.net
Sat Nov 10 15:27:15 EST 2007


NIST is making it small, which is new, but the technology is 
well-established.  See, for example:

http://www.geometrics.com/magnetometers/magnetometers.html

-RL

-----------------------
Robert Lutwak
Symmetricom - Technology Realization Center
RLutwak at Symmetricom.com        (Business)
Lutwak at Alum.mit.edu                   (Personal)
(978) 232-1461                              (Desk)
(339) 927-7896                              (Mobile)
(978) 927-4099                              (Facsimile)

----- Original Message ----- 
From: "Brooke Clarke" <brooke at pacific.net>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Saturday, November 10, 2007 2:23 PM
Subject: [time-nuts] Mini Magnetic Sensor May Have Biomedical,Security 
Applications


> Hi:
>
> NIST has come up with a new magnetic sensor that's in the 3 to 40 fT 
> range.
> It's based on a Rb cell's sensivity to magnetic fields.  It's based on the 
> work
> done for the Chip-Scale Atomic Clock.  See:
> http://www.nist.gov/public_affairs/techbeat/tb2007_1108.htm#magnetometer
> http://patapsco.nist.gov/ImageGallery/details.cfm?imageid=45 <- image of 
> sensor
> http://www.nist.gov/public_affairs/releases/CSMagnetometer.htm <- 
> pressrelease
> http://www.nist.gov/public_affairs/releases/miniclock.htm
>
> Is this something that could be done using the Rb cell from a frequency 
> standard?
>
> -- 
> Have Fun,
>
> Brooke Clarke
> http://www.PRC68.com
> http://www.precisionclock.com
> http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Cam
>
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