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Volumn 81, Issue 19, 2009, Pages 8203-8212

Electrochemical correlation spectroscopy in nanofluidic cavities

Author keywords

[No Author keywords available]

Indexed keywords

ADSORPTION DYNAMICS; ANALYTICAL EXPRESSIONS; BROWNIAN MOTION; CELL GEOMETRIES; CORRELATION SPECTROSCOPY; ELECTROCHEMICAL TECHNIQUES; ELECTRODE SPACING; FARADAIC CURRENT; FLUCTUATION SPECTRA; FLUORESCENCE CORRELATION SPECTROSCOPY; HIGH FREQUENCY HF; MICROFABRICATED; REDOX CYCLING; THIN LAYERS; THIN-LAYER CELLS;

EID: 70349616559     PISSN: 00032700     EISSN: None     Source Type: Journal    
DOI: 10.1021/ac9014885     Document Type: Article
Times cited : (71)

References (56)
  • 9
    • 70349611119 scopus 로고    scopus 로고
    • note
    • The discreteness of the electronic charge leads to additional shot noise. This contribution to the fluctuations is however negligible compared to diffusion noise at the low frequencies investigated here.
  • 11
    • 70349616148 scopus 로고    scopus 로고
    • note
    • We use the term "escape rate" for consistency with Bezrukov. In electrochemical parlance, κ is a mass-transfer coefficient.
  • 12
    • 70349620426 scopus 로고    scopus 로고
    • note
    • The real part of Č(s) was evaluated using MapleSoft Maple 12.
  • 13
    • 70349623950 scopus 로고    scopus 로고
    • note
    • a, which is simply the linear concentration of molecules at this interface between the active region and the entrance channel.
  • 21
    • 70349629592 scopus 로고    scopus 로고
    • note
    • During extended measurements, we also observed a slight increase of the current due to evaporation of the solvent. This cannot account for the nonideal shape of the voltammograms, however, since this shape was essentially identical during subsequent forward and backward sweeps. Furthermore, the time scale for evaporation (0.5% current increase per 100 s, the time to record one voltammogram) was much slower compared to the observed current increase of 4% between 0.3 and 0.4 V (10 s).
  • 22
    • 70349617301 scopus 로고    scopus 로고
    • note
    • b = -0.1V) was indistinguishable from the background PSD in Figure 6.
  • 23
    • 70349615450 scopus 로고    scopus 로고
    • note
    • These spikes are also observed with no electrode connected, indicating that the interference occurs internally in the potentiostat.
  • 40
    • 70349632442 scopus 로고    scopus 로고
    • note
    • 56 a modified diffusion equation that takes adsorption explicitly into account via trapping and release rates. However the resulting equations can be solved analytically only for a limited set of boundary conditions. For simplicity we therefore employ the model of eq 22.
  • 41
    • 70349616138 scopus 로고    scopus 로고
    • note
    • We make this assumption for simplicity; a more detailed model of potentialdependent adsorption could easily be introduced at this stage.
  • 43
    • 70349625644 scopus 로고    scopus 로고
    • note
    • 36
  • 44
    • 70349629585 scopus 로고    scopus 로고
    • note
    • 17 is therefore also unaffected.
  • 48
    • 70349631204 scopus 로고    scopus 로고
    • note
    • 2 is slightly bigger because of the two methanol groups.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.