Abstract: A device and methods for performing biological or chemical analysis is provided. The device includes an array of three-dimensional microcolumns projecting away from a support plate. Each microcolumn has a relatively planar, first surface remote from the support plate. An array of multiple, different biological materials may be attached to the first surface. The device, when used in combination with existent micro-titer well plates, can improve efficiency of binding assays using microarrays for high-throughput capacity.