Fig. 4From: Patternable particle microarray utilizing controllable particle delivery2D planar pattern using two types of particles. a Braille representation of numbers from 0 to 9. b Bright-field microscopic image of arrayed particles composed of the combination of bare and red-fluorescent particles. c Fluorescent image revealing the planar pattern that displays the Braille numbers 1, 2, 3, 4, and 5Back to article page