The micropallet array system uses a pulsed laser to release pallets tens of microns to hundreds of microns in size from a larger array, enabling selective isolation of single cells adherent to the pallets. In this study, the laser-based release of pallets was characterized with respect to pallet array and laser parameters. The threshold laser energy required for pallet release increased linearly with the area of the pallet in contact with the underlying glass substrate. The spacing of the pallets within an array as well as the thickness or height of the pallet did not impact the energy required to release a pallet. Delivery of multiple laser pulses decreased the energy/pulse required for pallet release when the pallets were 100 microns or greater on a side. In addition to the square pallets, complex structures such as cantilevers and spirals could be released without damage using the pulsed laser. Identification of the pallet-array variables influencing the energy required for pallet release as well as strategies to minimize this energy will prove critical in optimizing the release of pallets with cells on the arrays
