1. Photoinduced Transient Displacement Current (PTDC).
This technique (which also has a pet net of photoinduced dipole technique) was first introced by C. Braun and S. Brown in 1991 and later developed with our active involvement. You can find its detailed description in S.N. Smirnov, C.L.Braun Advances in the Transient DC Photocurrent Technique for Excited State Dipole Moment Measurements, Rev. Sci. Instr., 1998, 69, 2875-2887
Unique for direct measure of excited state dipole moments. In its current stage, the technique is capable of measuring dipole moments from as low 5 D and the lifetimes as short as 0.5 ns. It can also be used to measure rotational times of excited dipoles, again in the range of not less than 0.5 ns. Limitations by solvent polarity are not very strict, measurements have be done in acetonitrile and 2-propanol.
2. Magnetic Field
Modulation of the Reaction Yield. 
This technique comes in a variety of flavors and is based on affecting the spin multiplicity of recombining radical pairs. We employ the detection based on photocurrents.
3. Transient Absorption.
Very powerful technique for measuring fast kinetics of energy and charge transfer from femtosecond to microsecond timescale. We collaborate with ASU team and use their facilities.
4. Time Resolved Fluorescence.
This technique we use on the same setup as for dipole measurements, i.e. quasi single shot experiment with about 0.5 ns time resolution. Main purpose is to compare kinetics for fluorescent species with dipole measurements.
5. Scanning Probe Microscopy
STM and AFM are the tools in some of our projects. Details.
6. Anodized Aluminum
It is not a technique rather a versatile template. Anodized alumina membranes can be preapared of various dimensions and applied in sensors and as templates for production of nanowires. We grow nanowires by electrodeposition of metals inside the nanopores of alumina membranes. Details.
Last updated 06/09/05.
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