Drilled and corrugated folding-sliding panels by H&dM 
Herzog & de Meuron studio is carefully exploring the possibilities of perforated sheet filters; (see also  by the same architects).The whole façade of this building in Munich is covered with a layer of horizontal folding sliding metal panels. The manipulation of these leaves can be done from the inside through a sophisticated mechanism, so as a pantograph.
Each leaf is formed from a drilled metal sheet, with circular perforations about a couple of centimetres diameter. The perforated sheet is then corrugated, giving the panel more rigidity and a more complex transparency.
From the inside, the visual texture of the metal sheet seems a textile curtain, and allows the view to the outside and an adequate lighting. Solar protection is not very high, but perhaps appropriate to these latitudes.
Jennifer Cestnik, University of Oregon
Ph1, Ph2, Ph3, Ph5: Hisao Suzuki, from elCroquis 109-110 - Fünf Höfe
Ph6: Margherita Spiluttini, from flickr
from elCroquis 109-110 - Fünf Höfe