go to AoS home
search site
home current exhibition submission archive about us contact us
    4 Gold Sculptures  

go to top

next image

go back go forward

Dennis Callahan
Graduate student
4 scanning electron microscope (SEM) images of a thin film of gold (Au) which was deposited on a sacrificial layer of polymer photoresist. When the photoresist was selectively etched away, the Au film peeled up due to built-in thermal stress and formed a number of interesting three-dimensional shapes. Certain regions of the Au appear transparent as the secondary electrons from the SEM have enough energy to transmit through the thin layers of metal and reach the detector.








go to Caltech Home