An article includes a first microstructured layer and a second microstructured layer. The first microstructured layer includes a plurality of first microstructures forming a plurality of first grooves therebetween. The second microstructured layer includes a plurality of second microstructures disposed adjacent to the plurality of first microstructures. The plurality of second microstructures forms a plurality of second grooves therebetween. The article further includes a light absorbing material disposed in at least each of the plurality of first grooves and each of the plurality of second grooves. The light absorbing material bonds the first microstructured layer to the second microstructured layer.