I really like his work with light!

‘hans kotter works at the intersection of photography, design, and technology, creating sculptures and installations
that give physical form to light. constantly exploring new materials and techniques, kotter has a body of work that ranges from lightboxes of painting-like macro photography to optical-illusion-like LED sculptures to room-sized installations that envelop visitors in emotive and visually stimulating washes of colour.’

via designboom