1.   The coffee filter has thin fibers to trap the particles that cause bitterness.

2.   Another approach uses a pressurized ion chamber, also no bigger than a suitcase, to trap air particles and give scientists a reading of radiation in the atmosphere.

3.   It was at Bell Labs that Chu met Arthur Ashkin, who was trapping microscopic particles with laser light and who dreamed of trapping atoms.

4.   Rocketdyne officials said the beryllium shop had a filtration system, air exchanges and tacky floor tape to trap particles.

5.   The hollow chamber inside a tokamak doughnut is threaded with spiraling magnetic fields to trap particles from hydrogen atoms.

6.   The layer of warmth above the chilling ground acted as a lid that trapped tiny particles and moisture which was belching from smokestacks in the valley.

7.   The system draws in air and traps the particles in a liquid, which then flows past tiny beads coated with antibodies that hook only onto certain pathogens.

8.   The system draws in air and traps the particles in a liquid, which then flows past tiny beads coated with antibodies that hook onto only certain pathogens.

9.   The technique uses light as a tweezer, trapping particles by the force of refracted light.