Patent ID: 9490113
Filing Date: 2016-11-08
CPC Classification: G01N,H01J,Y02E

Claim Text:
1. A laser desorption ionization mass spectrometry device, comprising: i) a silicon nanopost array configured to hold surface deposited sample molecules without a matrix, said silicon nanopost array having a plurality of tailored aspect ratio posts; ii) a pulsed laser configured to emit unpolarized radiation at said plurality of tailored aspect ratio posts and the sample molecules for desorption ionization; iii) focusing optics based on lenses, mirrors, or a sharpened optical fiber configured to direct the unpolarized laser radiation at the plurality of tailored aspect ratio posts and the sample molecules; and iv) a mass spectrometer configured to analyze and detect the ions that are directly desorbed from said plurality of tailored aspect ratio posts, with the proviso that the tailored aspect ratio posts are not laser induced posts.