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Tip-based femtosecond multiphoton spectroscopy with radiative heating

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-SC0018461
Agency Tracking Number: 0000234310
Amount: $149,999.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: 10a
Solicitation Number: DE-FOA-0001770
Solicitation Year: 2018
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-04-09
Award End Date (Contract End Date): 2019-01-08
Small Business Information
PO Box 24803
San Jose, CA 95154-4803
United States
DUNS: 078645584
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Costas Grigoropoulos
 (510) 642-2525
Business Contact
 Hee Park
Phone: (408) 386-1980
Research Institution
 The Regents of the University of California, Berkeley
 Costas P Grigoropoulos
2150 Shattuck Avenue Suite 300
Berkeley, CA 94704-5940
United States

 (510) 642-2525
 Nonprofit College or University

One of grand challenges in nanoscience and nanotechnology is to achieve fundamental under- standing of the dynamic evolution of materials in actual operating environment, non-equilibrium conditions, or undergoing chemical reactions at the nanoscale. This requires forefront advances in imaging and analysis techniques that combine nanometer-scale spatial resolution, optical excitation and spectroscopic detection for direct in-situ observation of the fundamental processes. The proposed innovation is in-situ nanoscale imaging method by integrating tip-based near-field scanning optical microscopy with femtosecond multiphoton spectroscopy, and by expanding its operational temperature beyond conventional range. First, the laser-heated stage enables high temperature operation up to 1000K since radiative heating can be precisely controlled and con- fined to a small volume at a short period of time. Second, design concepts and fabrication methods of near-field optical probe that is compatible with such extreme temperature are proposed, which is based on transparent, heat-resistant, and durable materials. Third, in-situ probe cleaning is applied to prolong the lifetime of optical probe and enhance the usability and reliability in harsh operating conditions.

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