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Impedance Measurement

DLTS User Meeting 2023 - Q&A

21.12.2023

DLTS User Meeting 2023

This blog post presents the questions and answers raised during the DLTS User Meeting 2023. The meeting intended to bring together the community who may face common measurement challenges and allow them to share knowledge and expertise.

Capacitance Transients at Variable Temperature

05.10.2023

LabOne DAQ Module showing capacitive transients

This blog post shows the ease of set-up of the MFIA to measure capacitive transients for self-build DLTS. The combination of MFIA plus third-party temperature stage brings the possibility to tune your DLTS measurement parameters to suit your sample. Home-building your DLTS system with the MFIA gives you flexibility and the freedom to choose the test signal amplitude, frequency and even the mode of stressing pulse. 

Different Views on Quality Factor and Equivalent Circuit Modeling

21.09.2023

MFIA front

For ease of communication, scientific nomenclature is often named as short as possible. Unfortunately, sometimes this convention leads to different terms sharing the same name, which may lead to confusion. Taking piezoelectric impedance and dielectric impedance as examples in this blog post, we will clarify 2 ambiguous terms, the quality...

Detecting Covid Virus Using an MFIA Impedance Analyzer

14.06.2023

MFIA

In the past few years, the spread of COVID-19 pandemic has led to a tremendous development in detecting SARS-CoV-2 (and HCoV-229E) viruses. Whereas polymerase chain reaction-based fluorescence is known to be accurate, it is time-consuming and requires sophisticated setup and expertise. On the other hand, lateral flow assay (LFA) is...

Piezoelectric Impedance: Measurement and Modeling

13.04.2023

teaser piezo

Piezoelectric materials can produce electricity under mechanical stresses, and often find uses in both sensing and transducing applications. In this blog post, we focus on the electrical impedance measurement of piezoelectric materials, using an MFIA Impedance Analyzer (measuring the electrical response of piezoelectric devices often requires a charge integrator, which...

Setting Up Drive Level Capacitance Profiling Measurements

14.03.2023

DLCP

Drive level capacitance profiling (DLCP) is a powerful technique to accurately determine the charge carrier density in semiconductors when deep level states are present. It is often considered an improvement over the widely applied characterization technique known as capacitance-voltage (C-V) profiling...

Electrochemical Impedance Spectroscopy Beyond 300 GΩ

19.01.2023

MFIA Impedance Analyzer

In electrochemistry, the characteristics of a given process can be assessed by electrochemical impedance spectroscopy (EIS). A semicircle in the Nyquist plot usually corresponds to electrochemical processes that can be modelled as a parallel connection of a resistor (R) and a capacitor (C). The diameter of the semicircle provides the value of R, while the associated time constant (also known as relaxation time) is given by RC...

Impedance Measurements on Grounded Components

09.01.2023

Setup for measuring grounded components with the MFIA

The MFIA is a high-precision impedance analyzer. It measures voltage, current and phase to calculate impedance. As is the case for most impedance analyzers, the measurement circuit is designed so that the device under test (DUT) is operated under floating conditions, which means that none of the terminals of the DUT is connected to the ground...

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