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Front cover: Performance of laterally elongated pillar array columns in capillary electrochromatography mode
Author(s) -
Baca Martyna,
Kryj Agata,
Naghdi Elahe,
Gelin Pierre,
Sukas Sertan,
Laha Priya,
Terryn Herman,
Ottevaere Heidi,
De Malsche Wim
Publication year - 2020
Publication title -
electrophoresis
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.202070081
Subject(s) - capillary electrochromatography , materials science , pillar , capillary action , aspect ratio (aeronautics) , electrochromatography , monolith , substrate (aquarium) , dispersion (optics) , optics , analytical chemistry (journal) , chromatography , optoelectronics , composite material , chemistry , physics , oceanography , structural engineering , engineering , geology , biochemistry , catalysis
DOI: 10.1002/elps.2021 The cover picture shows a radially elongated pillar array column fabricated in a glass substrate wherein capillary electrochromatography has been performed to separate small molecules (coumarins). By increasing the aspect ratio from 1 (cylinders) to 4 (rectangles), it could be demonstrated that the attainable performance limit (unretained conditions) has been shifted from N = 2.7 × 10 5 plates to N = 5.7 × 10 5 plates. This performance gain can be mainly attributed to hindered axial diffusion and concomitant B‐term dispersion reduction in the large aspect ratio structures.