People » Karin Chumbimuni-Torres


  • Ultra-Sensitive Ion-Selective Sensors
  • Controllable Wireless Optical Sensors
  • Electrochemical Genotyping

Currently, Dr. Chumbimuni-Torres’s research interests focus on the understanding, characterization, and development of chemical sensors for biological applications. Analytes of interest are biological ions as well as biomolecules such as microRNAs, RNA, and DNA. In this direction, her lab’s aim is to integrate ultra-sensitive polymeric-based sensors into microchip platforms. Her group is also interested in studying the interactions at the interface of biomolecules and nanomaterials, the synthesis of nanoparticles and nanostructures, and the development of biocompatible materials for analytical devices. Her lab’s research interests have been extended to optical sensors where they use photoactive compounds to create sensors with the capability to be controlled using visible light for biomedical applications.

1. Patel, P., Chumbimuni-Torres, K. Y.* (2016) Visible light-induced ion-selective optodes based on a metastable photoacid for cation detection. Analyst, 141, 85-89.
2. Patel, P., Johns, V., Mills, D. M., Boone, J. E., Calvo-Marzal, P., Chumbimuni-Torres, K. Y.* (2015)
Karin Y. Chumbimuni-Torres 3
Tuning the Equilibrium Response Time of Meta-Stable Photoacids in Ion-Sensors by Appropriate Functionalization. Electroanalysis, 27, 677-683.
3. Johns, V., Patel, P., Hasset, S., Calvo-Marzal, P., Qin, Y. Chumbimuni-Torres, K. Y.* (2014) Visible Light Activated Ion-Sensing using a Photoacid Polymer for Calcium Detection. Anal. Chem. 86, 6184-6187.
4. Mensah, S., Gonzales, Y., Calvo-Marzal, P., Chumbimuni-Torres, K. Y.* (2014) Nanomolar detection limits of Cd2+, Ag+, and K+ using paper-strip-ion-selective electrodes. Anal. Chem. 86, 7269-7273.
5. Duarte, L. T.*, Romano, J. M. T., Jutten, S., Chumbimuni-Torres, K. Y., Kubota, L. T. (2014) Application of Blind Source Separation Methods to Ion-Selective Electrode Arrays in Flow-Injection Analysis. IEEE Sensors J 14 (7) 2228-2229.
6. Heider, E. C., Trieu, K., Diaz, V. M., Chumbimuni-Torres K. Y., Campiglia, A.*, D., Duranceau, S. J. (2013) An indium tin oxide electrode modified with gold nanorods for use in potential-controlled surface plasmon resonance studies. Microchim. Acta, 180, 1013-1020.
7. Chumbimuni-Torres, K., Coronado, R. E., Mfuh, A. M., Castro-Guerrero, C., Silva, M. F., Negrete, G. R., Bizios, R., Garcia, C. D.* (2011) Adsorption of Proteins to thin-films of PDMS and its effect on the adhesion of human endothelial cells. RSC Advances, 1, 706-714.
8. Chumbimuni-Torres, K. Y., Wu, J., Clawson, C., Galik. M., Walter, A., Flechsig, G. U., Bakker, E.*, Zhang, L., Wang, J.* (2010) Amplified potentiometric transduction of DNA hybridization using ion-loaded liposomes. Analyst, 135, 1618-1623.
9. Chumbimuni-Torres, K. Y., Thammakhet, Ch., Galik, M., Calvo-Marzal, P., Wu, J., Bakker E.*, Flechsig, G. U., Wang, J.* (2009) High-Temperature Potentiometry: Modulated Response of Ion-Selective Electrodes during Heat Pulses. Anal. Chem., 81, 10290-10294.
10. Wu, J., Chumbimuni-Torres, K. Y., Galik, M., Thammakhet, Ch., Haake, D., Wang, J.* (2009) Potentiometric Detection of DNA Hybridization using Enzyme-Induced Metallization and a Silver Ion Selective Electrode. Anal. Chem., 81, 10007-10012.
11. Chumbimuni-Torres, K. Y., Bakker, E.*, Wang, J.* (2009) Real-time probing of the growth dynamics of nanoparticles using potentiometric ion-selective electrodes. Electrochem. Commun., 11, 1964-1967.