NSF award 2608297 · University of Arizona

Collaborative Research: Ultralow-Loss Torsion Microbalances as New Physics Probes

Final report due

28 November 2028

in 772 days · The award ends on 31 July 2028.

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Decide about an extension2 Apr 2028in 532 days
award ending 2028-07-31 · Research.gov
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Extension request16 Jun 2028in 607 days
award ending 2028-07-31 · Research.gov
PAPPG 24-1: “at least 45 days prior to the end date”
No-cost extension notice21 Jul 2028in 642 days
award ending 2028-07-31 · Research.gov
PAPPG 24-1: “at least ten calendar days prior to the end date”
Final report due28 Nov 2028in 772 days
award ending 2028-07-31 · Research.gov
PAPPG 24-1: “no later than 120-days following the end date of the award”
Project outcomes report due28 Nov 2028in 772 days
award ending 2028-07-31 · Research.gov
PAPPG 24-1: “no later than 120 days following the end date”
Award is closed out28 Nov 2028in 772 days
award ending 2028-07-31 · Research.gov
PAPPG 24-1: “financially closed out 120 days after their expiration date”

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NSF lists this award's end date as 31 July 2028.
NSF rules say the final report is due no later than 120 days after that.
So the final report is due by 28 November 2028.

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Award card

Award number: 2608297
Period of support: 1 Aug 2026 – 31 Jul 2028
Amount: $200,000
Awardee: University of Arizona, Tucson, AZ
Program: Gravity Exp. & Data Analysis, Particle Astrophysics/Cosmic P
Directorate: MPS

Abstract

Torsion balances have played a key role in the history of precision measurement and continue to serve as powerful tools for exploring physics beyond the Standard Model. This project will apply a new class of ultralow-loss, milligram-scale torsion balances to two outstanding problems in fundamental physics: (1) searching for wavelike dark matter and (2) testing Newton's law of gravity at distances below 100 microns.…

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