Measuring Molecules

Measuring orbitals and bonding in atoms, molecules, and solids

A sensitive technique for measuring hydroxyl radicals, atmospheric cleansing molecules.

For the last 20 years the National Health Service Central Register (NHSCR) has been used as the principal source of follow-up for mortality, and often for cancer incidence, in many cohort and clinical follow-up studies in England and Wales. Completeness of notification of childhood cancer registrations and deaths from the NHSCR was investigated by comparison between cancers and deaths notified ...

Measuring the folding transition time of single RNA molecules.

We describe a new, time-apertured photon correlation method for resolving the transition time between two states of RNA in folding--i.e., the time of the transition between states rather than the time spent in each state. Single molecule fluorescence resonance energy transfer and fluorescence correlation spectroscopy are used to obtain these measurements. Individual RNA molecules are labeled wi...

Polarizabilities of Adsorbed and Assembled Molecules: Measuring the Conductance through Buried Contacts

We have measured the polarizabilities of four families of molecules adsorbed to Au{111} surfaces, with structures ranging from fully saturated to fully conjugated, including single-molecule switches. Measured polarizabilities increase with increasing length and conjugation in the adsorbed molecules and are consistent with theoretical calculations. For single-molecule switches, the polarizabilit...

Measuring and manipulating the temperature of cold molecules trapped on a chip

S. Marx,1 D. Adu Smith,1 G. Insero,2 S. A. Meek,3 B. G. Sartakov,4 G. Meijer,1,5 and G. Santambrogio1,2,* 1Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany 2Istituto Nazionale di Ottica CNR and LENS, Via N. Carrara 1, 50019 Sesto Fiorentino, Italy 3Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg 11, 37077 Göttingen, Germany 4A. M. Prokhorov Ge...