In situ colorimetric detection and mixing of glucose–enzyme droplets in an open-surface platform via Marangoni effect

American Diabetes Association (2013) Economic costs of diabetes in the US in 2012. Diabetes Care 36(4):1033–1046

Ballard D, Brown C (1982) Computer vision. Prentice-Hall, Englewood Cliffs

Banerjee A, Noh JH, Liu Y, Rack PD, Papautsky I (2015) Programmable electrowetting with channels and droplets. Micromachines 6(2):172–185

Bhatia SN, Ingber DE (2014) Microfluidic organs-on-chips. Nat Biotechnol 32(8):760–772

Cameron BD, Li Y (2007) Polarization-based diffuse reflectance imaging for noninvasive measurement of glucose. J Diabetes Sci Technol 1(6):873–878

Chen C, Xie Q, Yang D, Xiao H, Fu Y, Tan Y, Yao S (2013) Recent advances in electrochemical glucose biosensors: a review. RSC Adv 3:4473

Davanlou A (2014) Integration of fiber optic sensors in measuring machines. Measurement 57:25–32

Davanlou A (2015) Thermally induced motion, collision and mixing of levitated droplets. Ph.D. dissertation, University of Central Florida

Davanlou A, Kumar R (2015a) Counter-current motion of a droplet levitated on a liquid film undergoing Marangoni convection. Int J Heat Mass Transf 89:345–352

Davanlou A, Kumar R (2015b) Thermally induced collision of droplets in an immiscible outer fluid. Sci Rep 5:9531

Davanlou A, Kumar R (2015c) Passive mixing enhancement of microliter droplets in a thermocapillary environment. Microfluid Nanofluid 19:1507–1513

Davanlou A, Kumar R (2015d) On the lifetime of non-coalescent levitated droplets. In: ASME 13th international conference on nanochannels, microchannels, and minichannels, San Francisco, California, pp V001T04A047. doi: 10.1115/ICNMM2015-48826

Dutta AK, Maji SW, Mondal A, Karmakar B, Biswas P, Adhikary B (2012) Iron selenide thin film: peroxidase-like behavior, glucose detection and amperometric sensing of hydrogen peroxide. Sens Actuators B Chem 173:724–731

Glucose Colorimetric Assay Kit Booklet (2015) Cayman chemical. Accessed Apr 2015

Huang XY, Jiao ZJ, Nguyen NT, Abgrall P (2008) Thermocapillary actuation of droplet in a planar microchannel. Microfluid Nanofluid 5:205–214

Jain A (1989) Fundamentals of digital image processing. Prentice-Hall, Englewood Cliffs

Kim N-Y, Adhikari KK, Dhakal R, Chuluunbaatar Z, Wang C, Kim E-S (2015) Rapid, sensitive, and reusable detection of glucose by a robust radiofrequency integrated passive device biosensor chip. Sci Rep 5:7807

Kottmann J, Rey JM, Luginbuehl J, Reichmann E, Sigrist MW (2012) Glucose sensing in human epidermis using mid-infrared photoacoustic detection. Biomed Opt Express 3:667–680

Lyandres O, Yuen JM, Shah NC, VanDuyne RP, Walsh JT, Glucksberg R (2008) Progress toward an in vivo surface-enhanced Raman spectroscopy glucose sensor. Diabetes Technol Ther 10(4):257–265

Miralles V, Huerre A, Williams H, Fournié B, Jullien M-C (2015) A versatile technology for droplet-based microfluidics: thermomechanical actuation. Lab Chip 15:2133–2139

National Diabetes Statistics Report (2014) Released 10 June 2014

Nguyen NT, Mousavi Shaegh SA, Kashaninejad N, Phan DT (2013) Design, fabrication and characterization of drug delivery systems based on lab-on-a-chip technology. Adv Drug Deliv Rev 65:1403–1419

Nichols GA, Hillier TA, Brown JB (2008) Normal fasting plasma glucose and risk of type 2 diabetes diagnosis. Am J Med 121(6):519–524

Nichols SP, Koh A, Storm WL, Shin JH, Schoenfisch MH (2013) Biocompatible materials for continuous glucose monitoring devices. Chem Rev 113:2528–2549

Pollack MG, Shenderov AD, Fair RB (2002) Electrowetting-based actuation of droplets for integrated microfluidics. Lab Chip 2(2):96–101

Riahi R, Tamayol A, Mousavi Shaegh SA, Ghaemmaghami AM, Dokmerci MR, Khademhosseini A (2015) Microfluidics for advanced drug delivery systems. Curr Opin Chem Eng 7:101–112

Selimović S, Hasan A, Dokmeci MR, Khademhosseini A (2012) Research highlights. Lab Chip 12:4003–4005

Srinivasan V, Pamula VK, Fair RB (2004) An integrated digital microfluidic lab-on-a-chip for clinical diagnostics on human physiological fluids. Lab Chip 4(4):310–315

Steiner M-S, Duerkop A, Wolfbeis OS (2011) Optical methods for sensing glucose. Chem Soc Rev 40:4805–4839

Su L, Feng J, Zhou X, Ren C, Li H, Chen X (2012) Colorimetric detection of urine glucose based ZnFe2O4 magnetic nanoparticles. Anal Chem 84:5733–5758

Vaddiraju S, Tomazos I, Burgess DJ, Jain FC, Papadimitrakopoulos F (2010) Emerging synergy between nanotechnology and implantable biosensors: a review. Biosens Bioelectron 25:1553–1565

Veiseh O, Tang BC, Whitehead KA, Anderson DG, Langer R (2015) Managing diabetes with nanomedicine: challenges and opportunities. Nat Rev Drug Discov 14(1):45–57

Ward WK (2007) How to design a biosensor. J Diabetes Sci Technol 1(2):201–204

Xing S, Harake RS, Pan T (2011) Droplet-driven transports on superhydrophobic-patterned surface microfluidics. Lab Chip 11:3642

Yakshi-Tafti E, Cho HJ, Kumar R (2010) Droplet actuation on a liquid layer due to thermocapillary motion: shape effect. Appl Phys Lett 96:264101

Yang X, Zhang AY, Wheeler DA, Bond TC, Gu C, Li Y (2012) Direct molecule-specific glucose detection by Raman spectroscopy based on photonic crystal fiber. Anal Bioanal Chem 402:687–691

Yeh SI, Sheen HJ, Yang JT (2015) Chemical reaction and mixing inside a coalesced droplet after a head-on collision. Microfluid Nanofluid 18(5):1355–1363

Zambon A, Zoso A, Gagliano O, Magrofuoco E, Fadini GP, Avogaro A, Foletto M, Quake S, Elvassore N (2015) High temporal resolution detection of patient-specific glucose uptake from human ex vivo adipose tissue on-chip. Anal Chem 87(13):6535–6543

Zhang Y, Tadigadapa S (2004) Calorimetric biosensors with integrated microfluidic channels. Biosens Bioelectron 19:1733–1743