Here is a good one for microfluidics (it is becoming more applications-focused rather than theory-focused): https://cbmsociety.org/conferences/microtas2019/
I agree with Melinda, undoubtedly MicroTAS is an excellent conference for microfluidics. For science and technology, researchers and companies. This year will be held in Basel, Switzerland but it moves to Asia and America
I have a conference interested in nanotechnology it is held in the UAE
3rd World Congress & Expo on Nanotechnology and Materials Science during September 02-03, 2019 Dubai, UAE.
Benefits of Attending
· All accepted abstracts will be published in the respective Journals
· Each abstract will receive a DOI provided by CrossRef
· Chance of B2B meeting
· Opportunity to organize Workshop/Symposium
For more details of scientific sessions and submission of abstract, please visit the below link http://biocoreconferences.com/nanotechnology-congress/abstract_submission.php