PROBE CAPACITANCE-DEPENDENT SYSTEMATIC ERROR IN I-V MEASUREMENTS OF NANOWIRES: ANALYSIS AND CORRECTION<br />
Journal Title: Metrology and Measurement Systems - Year 2007, Vol 14, Issue 3
Abstract
We propose a method of eliminating the systematic error due to the capacitance of digital oscilloscope probes in the experimental setup used for tracing current-voltage (I-V) curves of nanowires with quantum point contact (QPC). Used in I-V measurements, a digital storage oscilloscope (DSO) allows a reduction of measurement time to microseconds. Such short measurement time, however, involves a sensible effect of transition states occurring in an experimental setup representing an RC circuit. We analyze the effect of probe capacitance on the signal reading and on the resulting I-V curves, and derive theoretical formulae for the probe capacitance-dependent systematic error on the basis of a model proposed for the discussed measurement method. The systematic error is evidenced by nonlinearity of the obtained current-voltage curve, its shift with respect to the origin of the coordinate system, and an extension of the measurement range. We propose a correction method based on the derived theoretical relations that allow to calculate the corrections to be applied. The presented results of I-V measurements of nanowires with QPC confirm the correctness of our model and the efiectiveness of the method proposed.
Authors and Affiliations
MACIEJ WAWRZYNIAK
Keywords
Related Articles
- EP ID EP129055
- DOI -
- Views 63
- Downloads 0
THE PROBLEM OF MEASUREMENT DATA COMPLEXITY, FOR EXAMPLE OF THE GENERAL MODEL OF THE CENTRAL RESPIRATORY GENERATOR AND RECURRENT PLOTS ANALYSIS
The purpose of this modeling paper is to show and, in some extent, to explore the utility of one nonlinear tool, the recurrence plot, in assessing physiological systems and states, for example of the respiratory system....
QUANTUM HALL EFFECT: THE FUNDAMENTALS
The basic understanding of the physics behind and the reasons for very high precision of the resistivity ρxy quantisation in integer quantum Hall effect (IQHE) and the application of the effect in metrology to define a q...
HYBRID MODELING OF BIOMEDICAL SYSTEMS AND MEASURING NONLINEAR CHARACTERISTICS OF BIOSIGNALS FOR IMPROVING QUALITY OF LIFE<br />
The main purpose of this paper is to present some metrological aspects of the new concept of hybrid modeling (combined physical and in silico) of biological systems as well as possible applications of nonlinear (symbolic...
DIGITAL MEASUREMENT OF PHASE DIFFERENCE - A COMPARATIVE STUDY OF DSP ALGORITHMS
The paper compares nine methods of measurement of the phase difference of digitized sinusoidal signals mainly according to their sensitivity to sampling non-integer number of signal periods. The investigated methods can...
AUTOMATIC EXECUTION OF INSPECTION PLANS WITH THE I++ DME INTERFACE FOR INDUSTRIAL COORDINATE MEASUREMENTS
Due to the fast advancement of manufacturing technologies for micro- and nanostructured components and the increasing need for sophisticated inspection methods the paper discusses the prerequisites for automatic executio...