2013 R&D 100 Winner
Berkeley Lab Campanile ProbeScanning probe technologies such as atomic force microscopes (AFMs) return spatial maps with atomic-scale detail; but until now, no equivalently accessible tool to investigate chemical and physical properties at such a length scale was available. Scientists at Lawrence Berkeley National Laboratory have overcome this challenge by developing a tool to perform optical spectroscopy with a spatial resolution of less than 10 nm, two-orders-of-magnitude better than is possible with current technologies. Compatible with industry-standard AFMs, the Berkeley Lab Campanile Probe records detailed information about chemical and electronic properties anywhere on a sample. The probe enables optical spectroscopy with nanoscale resolution by converting light into surface plasmon polaritons (SPPs). The nanoscale-wavelength SPPs interact with matter, and then transform back into regular, propagating light that is collected and analyzed via standard spectroscopic techniques. Each pixel of the resulting image contains both topography and a full optical spectrum, and requires just 10 msec to record.

Campanile probe

Lawrence Berkeley National Laboratory

Development Team

Lawrence Berkeley National Laboratory's Berkeley Lab Campanile Probe development team (l-r): Alexander Weber-Bargioni, P. James Schuck, Stefano Cabrini.


The Berkeley Lab Campanile Probe Development Team from Lawrence Berkeley National Laboratory
Alex Weber-Bargioni, Principal Developer
P. James Schuck, Principal Developer
Stefano Cabrini, Principal Developer
Wei Bao
Mauro Melli
Frank Ogletree
Eli Yablonovitch