ACOUSTIC DETECTION MODULES implementing custom quartz tuning forks, realized in collaboration with PolySenSe Lab have been recently started to be commercialized by THORLABS
https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=11241 
ACOUSTIC DETECTION MODULES implementing custom quartz tuning forks, realized in collaboration with PolySenSe Lab have been recently started to be commercialized by THORLABS
https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=11241