| 摘要 |
PROBLEM TO BE SOLVED: To provide a bead distributing system for delivering small amounts of substances onto substrates. SOLUTION: This system can include, for example, a movable support structure having an array of spaced-apart projections hanging from its lower side. An attraction source, such as a reduced pressure, magnetic, and/or electrostatic force, is operable at each projection end region to attract and retain one bead. The projection array can be aligned with an array of bead-receiving regions of a substrate, e.g., an array of spaced-apart wells of a micro-plate or micro-card. In one embodiment, a plurality of reagent-carrying beads are picked up, retained at respective projection end regions, and moved to a location over a multi-well plate. The beads are then released in a fashion permitting each bead to land in each well. The system is particularly useful for assembling arrays of reagents. COPYRIGHT: (C)2009,JPO&INPIT |
