Scanning Electrode Quartz Crystal Analysis. Back-Scanning Mode and Application to Electrochemical Measurements
نویسندگان
چکیده
منابع مشابه
Scanning electrochemical microscopy. 36. A combined scanning electrochemical microscope-quartz crystal microbalance instrument for studying thin films.
The design of a combined scanning electrochemical microscope-quartz crystal microbalance (SECM-QCM) with separate potential control of the tip and substrate is described. Both lateral and vertical tip movements near the substrate affect the QCM resonant frequency because of perturbations of the longitudinal and shear waves of the quartz crystal (QC) acoustic wave sensor. The SECM-QCM was used t...
متن کاملScanning tunneling microscope measurements of the amplitude of vibration of a quartz crystal oscillator
We report highly accurate measurements of the vibrational amplitude of a transverse shear mode quartz resonator, obtained by directly imaging the surface oscillatory motion with a scanning tunneling microscope. Amplitude measurements, performed over a range of resonator drive levels and quality factors, agree with theoretical predictions to within a factor of two. © 2000 American Institute of P...
متن کاملScanning electrochemical microscopy 50. Kinetic study of electrode reactions by the tip generation-substrate collection mode.
A scanning electrochemical microscopy (SECM) methodology for localized quantitative kinetic studies of electrode reactions based on the tip generation-substrate collection (TG-SC) operation mode is presented. This approach does not use the mediator feedback required in typical kinetic SECM experiments. The reactant is galvanostatically electrogenerated on a tip placed in proximity to the substr...
متن کاملMicro ring–disk electrode probes for scanning electrochemical microscopy
The construction and characterisation of ring–disk (RD) microelectrodes suitable for use in scanning electrochemical microscopy (SECM) is reported. Such RD electrodes are proposed as probes for novel generator–collector SECM experiments. In this case, the interaction of both the reactants and products with the substrate under investigation can be followed simultaneously from a single approach c...
متن کاملApplication of scanning electrochemical microscopy to biological samples.
The scanning electrochemical microscope can be used in the feedback mode in two-dimensional scans over biological substrates to obtain topographic information at the micrometer level. In this mode, the effect of distance between a substrate (either conductive or insulating) and a scanning ultramicroelectrode tip on the electrolytic current flowing at the tip is recorded as a function of the tip...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Analytical Sciences
سال: 1999
ISSN: 0910-6340,1348-2246
DOI: 10.2116/analsci.15.749