Erwin’s research interests cover the field of synthesis of ultrathin films and nanostructures using methods such as (plasma-enhanced) chemical vapor deposition (CVD) and atomic layer deposition (ALD) for a wide variety of applications, mostly within the areas of nanoelectronics and photovoltaics. Within the field of ALD, he has contributed most prominently by his work on plasma-assisted ALD, his research related to ALD for photovoltaics, and ALD for nanopatterning (including area-selective ALD). Currently, Erwin is focusing his research mostly on atomic scale processing, a field which is believed to grow in importance quickly in the next decade, for a wide variety of application domains.