Abstract: A microfluidic device including at least one microfabricated electrochemical flow cell and method of manufacturing such a device are disclosed herein. The electrochemical cell comprising at least a substrate, wherein the substrate has a front face and a back face; a channel wall bonded to the front face of the substrate without using a spacer, wherein the wall and the substrate define a microchannel having an inlet for receiving a fluid and an outlet for transmitting the fluid; a plurality of electrodes inside the microchannel, wherein said plurality of electrodes comprises one or more working electrodes and one or more counter electrodes, wherein the fluid flows over the surface of the plurality of electrodes and wherein optionally a length of the microchannel over the one or more working electrodes is greater than a height of the microchannel over the one or more working electrodes.

Abstract: An electrochemical flow cell comprises a substrate having an insulated surface, a polymer gasket integrally disposed on the surface, and a top cover disposed on the gasket. The components define a fluidic channel when assembled. An electrode(s) on the substrate surface provides for electrochemical detection of analytes in the fluid flowing over the electrode in the fluidic channel. The electrode(s) can be also integrated to the substrate. The assembly can be packaged. The flow cell inexpensive, versatile, and disposable. Small dimensions can facilitate good sensitivity and selectivity. Applications include environmental, life sciences, pharmaceuticals, and proteomics. The cell can be adapted for both detector and electrospray ionization applications.

Abstract: Systems and methods for monitoring analytes in real time using integrated chromatography systems and devices. Integrated microfluidic liquid chromatography devices and systems include multiple separation columns integrated into a single substrate. Using such a device, parallel analysis of multiple samples can be performed simultaneously and/or sequential analysis of a single sample can be performed simultaneously on a single chip or substrate. The devices and systems are well suited for use in high pressure liquid chromatography (HPLC) applications. HPLC chips and devices including embedded parylene channels can be fabricated using a single mask process.