Interfacing multiplexed microfluidics to MALDI-MS by high-throughput robotic spotting

C. W. Tsao, T. Song, C. F. Chen, J. Liu, C. C. Chang, D. L. Devoe

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Direct and automated spotting of analyte from multichannel microfluidic chips is demonstrated as a simple, robust, and high-throughput method for interfacing arrays of parallel microchannels with matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS). Using cyclic olefin copolymer (COC) chips containing 8 parallel 100 µm x 46 µm channels connected to a single input port, excellent spotting volume repeatability and MALDI-MS signal uniformity are achieved for a panel of sample peptides. Using the robotic spotting approach, chip-based reversed-phase liquid chromatography (RPLC) separations are interfaced with nanofilament silicon LDI-MS, demonstrating the potential for this approach towards high-throughput on-chip bioanalysis coupled seamlessly with back-end mass spectrometry.

Original languageEnglish
Title of host publication2008 Solid-State Sensors, Actuators, and Microsystems Workshop
EditorsKimberly L. Turner, Leland Spangler
PublisherTransducer Research Foundation
Pages110-113
Number of pages4
ISBN (Electronic)0964002477, 9780964002470
DOIs
StatePublished - 2008
Event2008 Solid-State Sensors, Actuators, and Microsystems Workshop - Hilton Head Island, United States
Duration: 1 Jun 20085 Jun 2008

Publication series

NameTechnical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop

Conference

Conference2008 Solid-State Sensors, Actuators, and Microsystems Workshop
Country/TerritoryUnited States
CityHilton Head Island
Period1/06/085/06/08

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