Massachusetts Institute of Technology

Universidade Federal De Paraiba

HiongYap Gan

Jongyoon Han

Sung Jae Kim

Sung Hee Ko

Frederico Barbosa De Sousa

An electrochemical system with reduced limiting-current behavior is disclosed. The electrochemical system is useful for fuel cells and bio-sensors. In part, the invention relates a method of reducing or eliminating limiting-current behavior in the operation electrochemical systems, in particular those with ion-selective membrane or electrochemical electrodes, by spatially reducing the convection near the membrane or the electrode. The invention further relates to electrochemical systems in which micropores, microarrays or pillar arrays are used to reduce convection in comparison to conventional systems without microarrays, micropores or pillar arrays.

Method for enhancing current throughput in an electrochemical system

Methods and systems are provided for transporting a therapeutic or cosmetic substance into nanoporous mineralized tissue structures, such as teeth. The method may include contacting the nanoporous mineralized tissue structure with an ionic solution including the therapeutic or cosmetic substance; and simultaneously applying to the nanoporous mineralized tissue structure an electrical potential effective to transport the therapeutic or cosmetic substance into the nanopores of the nanoporous mineralized tissue structure. The system may include at least one pair of electrodes which includes a first electrode configured for contacting the nanoporous mineralized tissue structure and a second electrode; and a power source and control circuitry for generating an electrical potential between the first electrode and the second electrode effective to transport a therapeutic or cosmetic substance, in an ionic solution in contact with a surface of the nanoporous mineralized tissue structure, into the nanopores of the nanoporous mineralized tissue structure.

Growing community of inventors

Singapore, Singapore

HiongYap Gan