How to Make It
Preheat the oven to 400°. Lay 1 sheet of the phyllo dough on a work surface and brush with melted butter. Lightly sprinkle white and black sesame seeds over the phyllo. Make 2 more layers, brushing the phyllo with butter and sprinkling it with sesame seeds. Top with a fourth sheet of phyllo and brush with butter.
Cut the layered phyllo lengthwise into 4 strips, then cut each strip in half crosswise. Fold the top corner of a strip over to form a triangle, then continue folding the triangle like a flag. Repeat with the remaining 7 strips. Repeat the layering and folding with the remaining 4 sheets of phyllo, the butter and sesame seeds. Set the phyllo triangles on a cookie sheet and bake for about 10 minutes, or until lightly browned. Transfer to a rack to cool.
In a small bowl, combine the sour cream with the lime juice. Season the scallops with salt and pepper. Heat the olive oil in a nonstick skillet until very hot. Add the scallops and cook over high heat until lightly browned, about 2 minutes per side. Drain on paper towels.
Spoon 1/2 teaspoon of the sour cream on each sesame crisp and top with a scallop. Spoon 1/4 teaspoon of sour cream on each scallop and garnish with lime zest. Transfer to a platter and serve at once.