Enhancing Separation and Constriction of Ion Mobility Distributions in Drift Tubes at Atmospheric Pressure Using Varying Fields.
Sign Up to like & getrecommendations! Published in 2022 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.2c00467
Abstract: A linearly decreasing electric field has been previously proven to be effective for diffusional correction of ions in a varying field drift tube (VFDT) system, leading to higher resolving powers compared to a conventional drift… read more here.
Keywords: atmospheric pressure; power; resolving power; drift tube ... See more keywords
FT-ICR Mass Spectrometry Imaging at Extreme Mass Resolving Power Using a Dynamically Harmonized ICR Cell with 1ω or 2ω Detection
Sign Up to like & getrecommendations! Published in 2022 at "Analytical Chemistry"
DOI: 10.1021/acs.analchem.2c00754
Abstract: MALDI mass spectrometry imaging (MALDI MSI) is a powerful analytical method for achieving 2D localization of compounds from thin sections of typically but not exclusively biological samples. The dynamically harmonized ICR cell (ParaCell) was recently… read more here.
Keywords: icr cell; icr; mass; resolving power ... See more keywords
Two-Dimensional FAIMS-IMS Characterization of Peptide Conformers with Resolution Exceeding 1000.
Sign Up to like & getrecommendations! Published in 2022 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.2c00805
Abstract: A high-performance field asymmetric waveform ion mobility spectrometry (FAIMS)-IMS-MS platform was developed and applied to explore the conformational diversity of the singly and doubly charged bradykinin (BK + H+)+ and (BK + 2H+)2+ ions. With… read more here.
Keywords: dimensional faims; two dimensional; ims characterization; faims ims ... See more keywords
How to Improve the Resolving Power of Compact Electrospray Ionization Ion Mobility Spectrometers
Sign Up to like & getrecommendations! Published in 2023 at "Analytical Chemistry"
DOI: 10.1021/acs.analchem.3c00471
Abstract: Every drift tube ion mobility spectrometer (IMS) has an optimum drift voltage to reach maximum resolving power. This optimum depends, among other things, on the temporal and spatial width of the injected ion packet and… read more here.
Keywords: electrospray ionization; resolving power; ion; ion mobility ... See more keywords
Generalization of an Open Dynamically Harmonized Cell for Ultrahigh FT ICR Resolution.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Society for Mass Spectrometry"
DOI: 10.1021/jasms.2c00133
Abstract: FT ICR mass spectrometry is the leader in resolving power among all mass spectrometry methods. Introduction of the dynamically harmonized measuring cell─a closed-cylindrical cell with specifically shaped electrodes─helps to reach the resolving power of more… read more here.
Keywords: magnetic field; dynamically harmonized; cell; resolving power ... See more keywords
Experimental Validation of the Digital Tandem Mass Filter.
Sign Up to like & getrecommendations! Published in 2023 at "Journal of the American Society for Mass Spectrometry"
DOI: 10.1021/jasms.2c00234
Abstract: This work presents the experimental evaluation of a digital tandem mass filter that is composed of two digitally operated low-resolution mass filters in series whose mass windows are shifted with respect to each other. The… read more here.
Keywords: tandem mass; digital tandem; mass; mass filter ... See more keywords
Laser post-ionisation combined with a high resolving power orbitrap mass spectrometer for enhanced MALDI-MS imaging of lipids.
Sign Up to like & getrecommendations! Published in 2017 at "Chemical communications"
DOI: 10.1039/c7cc02325a
Abstract: Coupling laser post-ionisation with a high resolving power MALDI Orbitrap mass spectrometer has realised an up to ∼100-fold increase in the sensitivity and enhanced the chemical coverage for MALDI-MS imaging of lipids relative to conventional… read more here.
Keywords: mass spectrometer; laser post; resolving power; post ionisation ... See more keywords
A Mid-Infrared Dual-Band Filter With Ultra-High Resolving Power
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2020.3006890
Abstract: A mid-infrared (mid-IR) dual-band filter with ultra-high resolving power is designed and numerically investigated. It is composed of an Al2O3 layer between a gold grating and a CaF2 substrate. Each unit cell of the grating… read more here.
Keywords: dual band; band filter; mid infrared; filter ... See more keywords
Resolving power of diffraction imaging with an objective: a numerical study.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.009628
Abstract: Diffraction imaging in the far-field can detect 3D morphological features of an object for its coherent nature. We describe methods for accurate calculation and analysis of diffraction images of scatterers of single and double spheres… read more here.
Keywords: power diffraction; study; diffraction imaging; diffraction ... See more keywords
Design and implementation of a Si3N4 three-stigmatic-point arrayed waveguide grating with a resolving power over 17,000.
Sign Up to like & getrecommendations! Published in 2023 at "Optics express"
DOI: 10.1364/oe.480823
Abstract: To provide a solution to the issue of the non-flat focal surface in traditional Rowland AWGs, we have designed and implemented a Si3N4 three-stigmatic-point arrayed waveguide grating (TSP AWG) with three inputs, and a spectral… read more here.
Keywords: si3n4 three; stigmatic point; point arrayed; power ... See more keywords