Immobilized diaphorase surfaces observed by scanning electrochemical microscope with shear force based tip-substrate positioning

被引:40
作者
Yamada, H [1 ]
Fukumoto, H [1 ]
Yokoyama, T [1 ]
Koike, T [1 ]
机构
[1] Natl Def Acad, Dept Appl Chem, Yokosuka, Kanagawa 2398686, Japan
关键词
D O I
10.1021/ac048582g
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Imaging of a coimmobilized diaphorase and albumin surface was investigated by scanning electrochemical microscopy (SECM) with shear force based tip-substrate distance control. A microelectrode tip was attached to a commercially available tuning fork to detect the shear force between the microelectrode tip and the surface. We used the standing approach mode, which repeats an approach and retraction at each data point of the surface to obtain simultaneous current and topographic images. To check the performance of our SECM system, we imaged a platinum-patterned array electrode and a diaphorase/albumin coimmobilized glass surface. Since the system acquires current when the tip is retracted to a desired distance, this mode is useful for a relatively large microelectrode (similar to 10 mu m) and for scanning a large area (few hundreds of micrometers). Furthermore, by retracting the tip when the tip moves laterally to the next data point to avoid contact between the tip and sample surface, we successfully imaged the surface without destroying its morphology.
引用
收藏
页码:1785 / 1790
页数:6
相关论文
共 33 条
  • [1] Studies of charge transfer at liquid | liquid interfaces and bilayer lipid membranes by scanning electrochemical microscopy
    Amemiya, S
    Ding, ZF
    Zhou, JF
    Bard, AJ
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2000, 483 (1-2) : 7 - 17
  • [2] Scanning electrochemistry microscopy (SECM) in the study of electron transfer kinetics at liquid/liquid interfaces: Beyond the constant composition approximation
    Barker, AL
    Unwin, PR
    Amemiya, S
    Zhou, JF
    Bard, AJ
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (34): : 7260 - 7269
  • [3] Imaging molecular transport in porous membranes. Observation and analysis of electroosmotic flow in individual pores using the scanning electrochemical microscope
    Bath, BD
    Lee, RD
    White, HS
    Scott, ER
    [J]. ANALYTICAL CHEMISTRY, 1998, 70 (06) : 1047 - 1058
  • [4] Scanning electrochemical microscopy studies of electron transfer through monolayers containing conjugated species at the liquid-liquid interface
    Delville, MH
    Tsionsky, M
    Bard, AJ
    [J]. LANGMUIR, 1998, 14 (10) : 2774 - 2779
  • [5] Determination of precursor sites for pitting corrosion of polycrystalline titanium by using different techniques
    Garfias-Mesias, LF
    Alodan, M
    James, PI
    Smyrl, WH
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1998, 145 (06) : 2005 - 2010
  • [6] GARFIASMESIAS LF, 1997, P ELECTROCHEM SOC, V97, P247
  • [7] Hengstenberg A, 2000, CHEM-EUR J, V6, P1547, DOI 10.1002/(SICI)1521-3765(20000502)6:9<1547::AID-CHEM1547>3.3.CO
  • [8] 2-3
  • [9] Scanning electrochemical microscopy with simultaneous independent topography
    James, PI
    Garfias-Mesias, LF
    Moyer, PJ
    Smyrl, WH
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1998, 145 (04) : L64 - L66
  • [10] PIEZOELECTRIC TIP-SAMPLE DISTANCE CONTROL FOR NEAR-FIELD OPTICAL MICROSCOPES
    KARRAI, K
    GROBER, RD
    [J]. APPLIED PHYSICS LETTERS, 1995, 66 (14) : 1842 - 1844