Recently, TiO2 nanowires synthesised from a Ti plate by the hydrothermal process have been used as a solid matrix for laser desorption/ionisation time-of-flight (LDI-TOF) mass spectrometry (MS). In this work, the influence of the surface condition of the Ti plate according to its level of polishing on the ionisation of samples in laser desorption/ionisation (LDI) MS has been estimated. The surface morphology and roughness were analysed with scanning electron microscopy (SEM) and atomic force microscopy (AFM), respectively. Subsequently, TiO2 nanowires synthesised from Ti plates polished to different levels were applied to LDI MS for the analysis of amino acids and the optimal surface condition of the Ti plate was estimated.
Bibliographical noteFunding Information:
This work was supported by the Nano-Convergence Foundation [(Grant number: R201602210)] funded by the Ministry of Science, ICT, and Future Planning (MSIP, South Korea) and the Ministry of Trade, Industry, and Energy (MOTIE, South Korea), the Industry Technology Development Program [(Grant number: 10063335)] funded by the Ministry of Trade, Industry and Energy (MOTIE, South Korea), and the National Research Foundation of Korea [(Grant numbers: NRF-2017R1A2B4004077, NRF-2017R1A2B2004398)].
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry