Carter researched air culture growing and described "a method of growing plants in water vapor to facilitate examination of roots".[19] Later researchers, including L. J Klotz and G. G. Trowel, expanded on his work.[20] In 1957, F. W. Went described "the process of growing plants with air-suspended roots and applying a nutrient mist to the root section", and in it he coined the word 'aeroponics' to describe that process. In 2008, root researcher and craftsman Ezekiel Golan described and secured a patent for a process which allows the roots of some aeroponically grown woody plants to lengthen and thicken while still remaining flexible. At lengths of perhaps 6 metres (20 ft) or more, the soft roots can be formed into pre-determined shapes which will continue thickening after the shapes are formed and as they continue to grow.[3][21] Newer techniques and applications, such as eco-architecture, may allow architects to design, grow, and form large permanent structures, such as homes, by shaping aeroponically grown plants and their roots.[5]