|
#
|
Material
|
Frequency [Hz]
|
Voltage [VRMS]
|
Amplitude [dB]
|
|---|
|
1
|
Gold
|
10.0
|
0.94
|
27.4
|
|
2
|
Gold
|
6.31
|
0.37
|
26.3
|
|
3
|
Gold
|
8.57
|
0.69
|
42.4
|
|
4
|
Gold
|
6.31
|
0.94
|
26.3
|
|
5
|
AISI 304/1 μm
|
6.31
|
0.94
|
-20.6
|
|
6
|
AISI 304/papersand 600
|
3.98
|
0.94
|
-25.1
|
|
7
|
Gold
|
10.0
|
0.46
|
14.5
|
|
8
|
Gold
|
25.1
|
0.46
|
10.0
|
|
9
|
Gold/glucose
|
15.9
|
0.94
|
11.8
|
- Each row indicates the appearance of a peak or valley in the third harmonic difference before and after the stimuli. Rows 1 to 6 correspond to a single measurement before and after the stimuli, whereas rows 7 to 9 correspond to repeated measurements. The second column indicates the material of the electrode. The third and fourth column indicates the frequency and voltage where a maximum was observed. The fifth column indicates the amplitude of that maximum. Gold electrode were polished to 1 μm, and stainless steel (experiments 5 and 6) was polished as indicated in column one. All experiments were performed with inhibitor of the enzyme (SMV), except experiment #9 where glucose was added.
