Although she's represented by Pierogi Gallery in New York and Gregory Lind Gallery in San Francisco, Walker, 42, has yet to find local representation. Her bright, lyrical abstract paintings ($1,800 to $7,000) layer networks within spaces that writhe, twist, and fold back on themselves. Walker, who heads Clark University's art department, is captivated by "what it's like to live in an environment crisscrossing the virtual and the physical. Painting is a way to live between the two realms." Her solo show at the Rose Art Museum at Brandeis University opens in April. sarahwalker.org