Journal
JOURNAL OF MASS SPECTROMETRY
Volume 46, Issue 9, Pages 859-864Publisher
WILEY-BLACKWELL
DOI: 10.1002/jms.1961
Keywords
mass spectrometry; surface plasmon; nanospike; soft nanolithography
Funding
- National Science Foundation [0904445]
- Air Force Office of Scientific Research [FA9550-10-C-0124]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0904445] Funding Source: National Science Foundation
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Surface-assisted laser desorption/ionization (SALDI) substrates have been fabricated using nanospiked polyurethane (PU) substrates that are replicated by a low-cost soft nanolithography method from silicon nanospike structures formed with femtosecond laser irradiations. The strongest mass spectrometry (MS) signal of Angiotensin II was obtained on 45-nm Au-coated nanospiked PU substrates. The effective ionization appears to be due to surface plasmon excitation. Such low-cost and identical SALDI substrates can be used for MS analysis of various molecules with high reproducibility. Copyright (C) 2011 John Wiley & Sons, Ltd.
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