Limitations of the methyl radical recombination method for acoustic cavitation bubble

Article Abstract:

The methyl radical recombination (MRR) method is used for the measurement of cavitation bubble temperatures in aqueous solutions containing a select group of aromatic hydrocarbons as the source for the methyl radicals. The analysis show that the MRR method cannot be used with organic compounds that do not predominantly produce methyl radicals on the thermal decomposition of the hydrocarbon solutes within the hot core of a collapsing bubble.

Methyl groups, Acoustic properties, Methyl compounds

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Correlational analysis of proteins and nonmetallic nanoparticles in a deep-nulling microscope

Article Abstract:

A method for label-free microscopic analysis of nonmetallic nanoparticles such as biopolymers or technical polymers diffusing freely in an aqueous environment is presented. The results show that it is possible to obtain transient nulls on the order of 10(super -5) in a microscope setup with aqueous solutions corresponding to optical pathway differences of less than 0.6 nm to actively stabilize the nulls to about 5.10(super -4).

Biopolymers

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