Robert Withnall

Raman spectra of carotenoids in natural products

Robert Withnall, Babur Z. Chowdhry, Jack Silver et al. · Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy · 2003 · 283 citations

Carotenoid, Natural Sciences, Spectroscopy +4

The Effect of Particle Morphology and Crystallite Size on the Upconversion Luminescence Properties of Erbium and Ytterbium Co-doped Yttrium Oxide Phosphors

Jack Silver, M. I. Martinez‐Rubio, Terry G. Ireland et al. · The Journal of Physical Chemistry B · 2001 · 247 citations

Optical Materials, Upconversion Emissions, Engineering +19

Indigo, woad, and Tyrian Purple: important vat dyes from antiquity to the present

Robin J. H. Clark, Christopher J. Cooksey, Marcus A. M. Daniels et al. · Endeavour · 1993 · 165 citations

Pigment, Tyrian Purple, Important Vat Dyes

Non-destructive pigment analysis of artefacts by Raman microscopy

Stephen P. Best, Robin J. H. Clark, Robert Withnall · Endeavour · 1992 · 163 citations

Materials Science, Engineering, Microscopy +6

Synthesis, structural characterisation and Raman spectroscopy of the inorganic pigments lead tin yellow types I and II and lead antimonate yellow: their identification on medieval paintings and manuscripts

Robin J. H. Clark, Lucas Cridland, Benson M. Kariuki et al. · Journal of the Chemical Society Dalton Transactions · 1995 · 141 citations

Crystal Structure, Engineering, Solid-state Chemistry +17