Skip Navigation


Doug Barrick
Professor, Biophysics


Vincent J. Hilser
Professor, Biology


Katherine Tripp, Ph.D.
Center Manager

Johns Hopkins University
3400 N. Charles Street
Baltimore, MD 21218
(410) 516-3598 office
(410) 516-4118 fax

Circular Dichorism




Circular dichroism (CD) is the property of chiral molecules to absorb the right and left components of circularly polarised light to a different extent.  CD spectroscopy measures this differential absorbance.  Nearly all biological macromolecules are chiral and lend themselves to CD experiments.  The Aviv Circular Dichroism Spectrometer records CD as a function of wavelength, time and temperature.



CD start up

CD sample preparation

CD spectra analysis


© The Johns Hopkins University. All rights reserved.