Since joining Palo Alto Research Center over three decades ago, Steve has designed and developed several highly accurate and versatile printers for printed electronics and 3D smart objects; studied the role of hydrogen in amorphous, polycrystalline and crystalline silicon and associated applications; contributed to the development of large-area amorphous and polycrystalline silicon arrays for optical and x-ray imaging as well as display technology. Steve has had the opportunity to give several invited talks at international conferences on printed electronics and 3D silicon technology.