Frequency dependence of thermal noise in gram-scale cantilever flexures

Thanh T-H. Nguyen, Conor M. Mow-Lowry, Bram J. J. Slagmolen, John Miller, Adam J. Mullavey, Stefan Gosler, Paul A. Altin, Daniel A. Shaddock, and David E. McClelland Centre for Gravitational Physics, The Australian National University, ScienceRd 38a, 2601 Canberra, ACT, Australia School of Physics and Astronomy, The University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom LIGOLaboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA LIGOLaboratory, LigoRd, Livingston, Louisiana 70754, USA Albert-Einstein-Institut, Max-Planck-Institut fur Gravitationsphysik, D-30167 Hannover, Germany (Received 11 October 2015; published 15 December 2015)