QD's have been contemplated 'downhole' for this ap
Post# of 22455
....as has been previously stated by QMC: http://www.qmcdots.com/press/press57.php
Conveniently, our Dr.Wong also holds patents on related downhole apps as I recall: https://patents.justia.com/patent/9377449 ...&... https://patents.justia.com/patent/9068109 ...&... https://patents.justia.com/patent/20150050741