<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Wearable microfluidic sweat collection platform with a calorimetric flow rate sensor for realtime and long-term sweat rate measurements"^^ . "This work presents the design and fabrication of a wearable microfluidic patch-based system for sweat collection with a calorimetric flow rate sensor based on heat convection for measuring sweat rate (SR). The effects were predicted using a 3D multi-physics simulator and were verified on a fabricated patch made of polyimide layers. The sensor can detect surface temperature gradients of 302-312 K caused by fluid flowing thru the microfluidic channels at a rate of 0.5-23 µg s�1 that fall within the physiological range of SR. Meanwhile, the relation between flow rate and temperature gradient is highly linear (Pearson r2 = 0.999) and repeatable. This work also demonstrates a low-cost method for patterning microfluidic channels on flexible substrates which can be used for mass production of wearable patches. © 2024 IOP Publishing Ltd."^^ . "2024" . . "34" . "3" . . "Journal of Micromechanics and Microengineering"^^ . . . . . . . . . . . . . . . . . "E.T.W."^^ . "Ho"^^ . "E.T.W. Ho"^^ . . "J."^^ . "Ang"^^ . "J. Ang"^^ . . "K."^^ . "Esguerra"^^ . "K. Esguerra"^^ . . "A.A."^^ . "Silverio"^^ . "A.A. Silverio"^^ . . . . . "HTML Summary of #19844 \n\nWearable microfluidic sweat collection platform with a calorimetric flow rate sensor for realtime and long-term sweat rate measurements\n\n" . "text/html" . .