People » Karin Chumbimuni-Torres

Focus

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

Currently, our research interests focus on the understanding, characterization and development of chemical sensors for bioanalytical applications. Our main interest is to develop an electrochemical sensor for the detection of cancer biomarkers in ultra-low volume samples via nanoparticles as the label. In this direction our aim is to integrate ultra-sensitive polymeric-based sensors into microchip platforms. We are 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. Our research interests have been extended to optical sensors where we use photoactive compounds to create sensors with the capability to be controlled for biomedical applications.

CHM2040 Torres

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.

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