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We show that ultrafast surface science studies using the laser-assisted photoelectric effect can benefit from longer-wavelength infrared dressing beams. We compare soft-x-ray photoemission from a Pt 111 surface dressed by 1300 and 780 nm light. Using 1300 nm light, the amplitude of the laser-assisted photoelectric signal is enhanced sevenfold compared with 780 nm. This allows lower dressing las...
Differences in Gene Expression between Wild Type and Hoxa1 Knockout Embryonic Stem Cells after Retinoic Acid Treatment or LIF Removal* Eduardo Martinez-Ceballos¶, Pierre Chambon‡, and Lorraine J. Gudas¶§ From the ¶Department of Pharmacology, Weill Medical College of Cornell University, 1300 York Ave., New York, NY 10021. and ‡Institut de Genetique et de Biologie Moleculaire et Cellulaire, CNRS/...
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