US 12,077,698 B2
Luminescent nanoparticle tracers, and systems and methods for fabrication and use thereof
Lance R. Hubbard, Richland, WA (US); Ryan I. Sumner, Richland, WA (US); Nicolas E. Uhnak, Kennewick, WA (US); April J. Carman, Richland, WA (US); and Martin Liezers, Richland, WA (US)
Assigned to Battelle Memorial Institute, Richland, WA (US)
Filed by Battelle Memorial Institute, Richland, WA (US)
Filed on Jan. 20, 2021, as Appl. No. 17/153,178.
Claims priority of provisional application 62/964,250, filed on Jan. 22, 2020.
Prior Publication US 2021/0277304 A1, Sep. 9, 2021
Int. Cl. C09K 11/02 (2006.01); C09K 11/56 (2006.01); C09K 11/57 (2006.01); C09K 11/66 (2006.01); C09K 11/77 (2006.01); C09K 11/88 (2006.01); G01N 21/64 (2006.01); B82Y 15/00 (2011.01); B82Y 20/00 (2011.01); B82Y 40/00 (2011.01)
CPC C09K 11/025 (2013.01) [C09K 11/565 (2013.01); C09K 11/574 (2013.01); C09K 11/662 (2013.01); C09K 11/7745 (2013.01); C09K 11/883 (2013.01); G01N 21/6428 (2013.01); B82Y 15/00 (2013.01); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01); G01N 2021/6439 (2013.01); Y10T 428/2991 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A tracer, comprising:
a silicate suspension having therein a plurality of tracer particle complexes, each tracer particle complex comprising:
a photoluminescent substrate encapsulated by a first protective layer; and
a core coupled to the photoluminescent substrate and comprising one or more photoluminescent quantum dots encapsulated by a second protective layer.