Since his 2009 show “Juggernaut,” Emre Hüner has used clay, polyurethane, and other materials to build sculptures that embody what he calls “fictional artifacts.” His contribution to the 2015 Istanbul Biennial, whose theme was “Saltwater: A Theory of Thought Forms,” was “Perpetual Island Infinite Vehicle,” 2015, a series of bulky sculptures made of glazed ceramics, steel, and paint, which imitated nature’s organic forms to suggest a topographical landscape. Hüner’s latest show, “[ELEKTROİZOLASYON]: Unknown Parameter Extro-Record,” curated by Aslı Seven, offers eclectic assemblages scattered