Browse Physics

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41.

Focus

A Supercool Solution

Phys. Rev. Focus 9, 28 (2002) – Published June 3, 2002

A cold, disordered solid made of alcohol refuses to crystallize at warmer temperatures where it ought to; instead it forms a viscous liquid.

42.

Focus

Freezing Water from the Outside In

Phys. Rev. Focus 8, 4 (2001) – Published July 18, 2001

The freezing of alcohol-coated water drops may illuminate the process of ice formation in the atmosphere.

43.

Focus

Shooting an X-ray Movie

Phys. Rev. Focus 8, 1 (2001) – Published July 7, 2001

Ultrafast x-ray pulses allow researchers to watch a reaction unfold on a surface.

44.

Focus

Dye Doesn’t Follow Fluid Flow

Phys. Rev. Focus 7, 7 (2001) – Published February 9, 2001

A surprising effect traps dye particles within narrow bands in a tank of whirling fluid. Such focusing may influence chemical reactions and the motions of water vapor in the atmosphere.

45.

Focus

Surface Grime Explains Friction

Phys. Rev. Focus 7, 6 (2001) – Published February 8, 2001

The standard force law for friction is explained microscopically by a theory that accounts for the grit that coats all surfaces.

46.

Focus

Measuring a Fragile Molecule

Phys. Rev. Focus 6, 9 (2000) – Published September 6, 2000

A team of physicists has precisely measured the length and strength of the exceedingly delicate bond formed between two helium atoms.

47.

Focus

Herding Molecules

Phys. Rev. Focus 5, 11 (2000) – Published March 10, 2000

Magnetically aligned liquid crystal molecules can act as molecular ‘sheep dogs,’ aligning organic molecules to form molecular films with unprecedented uniformity.

48.

Focus

A Good Look at Nanocrystals

Phys. Rev. Focus 5, 4 (2000) – Published January 31, 2000

The first atomic-scale images of nanocrystals that help reduce pollution show some surprises that should help researchers improve the chemical process.

49.

Focus

Breaking the Bonds You Choose

Phys. Rev. Focus 5, 1 (2000) – Published January 4, 2000

Physicists have selectively broken certain bonds in a molecule while avoiding others in the most precisely controlled bond breaking ever achieved.

50.

Focus

Burning Under Control

Phys. Rev. Focus 2, 23 (1998) – Published November 6, 1998

51.

Focus

Nobel Focus: Chemistry by Computer

Phys. Rev. Focus 2, 19 (1998) – Published October 21, 1998

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