Arrival at the airport (Zurich Kloten)
After reclaiming baggage, follow the signs "Bahn/Railway" and take an escalator down to the platforms 3 or 4. Trains to Zurich Oerlikon leave every 10 minutes, and the ride takes about 5 minutes. Exit at Zurich Oerlikon, and take Bus #80 direction Triemlispital. Exit ETH-Hönggerberg. The seccond ride takes about 7 minutes.
Arrival at Zurich Oerlikon (Train Station)
Take Bus #80 direction Triemlispital. Exit ETH Hoenggerberg. The ride takes about 7 minutes.
Arrival at Zurich Hbf Hauptbahnhof (Main Train Station)
At the main station walk to the head of the train, leave the building to the right, and take tram 11 (direction Auzelg, exit Bucheggplatz, continue with bus 69 to ETH-Hönggerberg) or tram 14 (direction Seebach, exit Milchbuck, continue with bus 69 to ETH-Hönggerberg), or bus 46 (direction Rüthihof, exit Meierhofplatz, continue with bus 80 direction Oerlikon to ETH-Hönggerberg). Exit your second ride at station ETH-Hönggerberg (one stop after Hoenggerberg).
Arrival at ETH-Hönggerberg (Bus Station)
Walk the main street from the ETH Hönggerberg bus station direction south for about 100 m, then turn left to enter the Leopold-Ruzicka-Weg. You'll be faced with the silver HCP building behind a little lagoon that is surrounded by a few trees. Do not use the first entrance (E floor) to the HCP building (although Polymer Physics is mentioned on a yellow panel) but continue walking to the second entrance of the same building, denoted as F floor. Having entered, take a straight walk until you can see the lagoon again (and a kitchen). You are now located in the geographical center of the Polymer Physics group and surrounded by its offices.