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740327 
Journal Article 
Super black and ultrathin amorphous carbon film inspired by anti-reflection architecture in butterfly wing 
Zhao, Q; Fan, T; Ding, J; Zhang, D; Guo, Q; Kamada, M 
2011 
Yes 
Carbon
ISSN: 0008-6223
EISSN: 1873-3891 
49 
3 
877-883 
WOS:000286683500015 
An ultrathin film oscillator biosensor is presented for highly sensitive monitoring of binding reactions among biomolecules in solutions. The phonon vibration along the thickness direction of an 18-nm Pt film is measured by ultrafast light pulses, whose fundamental resonance frequency is 120 GHz. The vibrational amplitude is monitored during binding reaction between human immunoglobulin G (higG) and anti-higG antibody, which exponentially decreases as the reaction progresses. A 6 pM hIgG solution can be detected. This biosensor also shows the ability to determine the affinity between proteins through the concentration dependence of the reaction rate. (C) 2010 The Japan Society of Applied Physics 
• Nanoscale Carbon