Magnetic resonance systems forces

Magnetic resonance force microscopy would allow direct chemical imaging of samples to depths of about 100 nm for a system providing 1 nm lateral resolution. In such experiments, depth resolution is obtained by scanning the radio frequency employed to flip the electron or nuclear spins in the sample. 

In contrast to previous explosive periods, we have every expectation that research by both physicists and chemists on liquid crystals will continue to accelerate for the foreseeable future for several salient reasons. The first is the variety and importance of systems in which liquid crystals are observed—in biological systems and in items of commerce such as detergents and polymers. The second is the new instrumental techniques to evaluate the intermolecular forces which determine the properties of the unique liquid crystalline state. These techniques include differential thermal analysis and nuclear magnetic resonance. We are now in the eye of this activity and have the happy prospect of a stimulating future in a continuing growth period for studying both ordered fluids and liquid crystals. 

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