The designer who became known for confrontational performance art back in the 1970s is still pushing limitsbut now it’s the limits of his materials. In the lobby of the Bronx Museum of the Arts, Vito Acconci and colleagues have created a large sculptural installation called Lobby-For-The-Time-Being. Their medium was DuPont’s Corian solid surface, which the Acconci Studio cut into ribbons, stretched, twisted, wrapped around columns, and filigreed. As visitors pass through, sensors trigger projections that start a play of light and shadow. Through Jan. 2. www.bronxmuseum.org