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Dual-Channel Lock-in Amplifier OE1022D Applied in the Study of Nonlinear Plasmon-Exciton Polarit
In 2022, the research team led by Professor Jiang Tian from the National University of Defense Technology, in collaboration with Professor Shi Lei's team from Fudan University, published an article titled "Interacting Plexcitons for Designed Ultrafast Optical Nonlinearity in a Mono" in RLight: Science & Applications.
Terahertz Time Domain Spectroscopy and Frequency Domain Spectroscopy
Terahertz time-domain spectroscopy characterizes material properties by measuring complex responses in the frequency range from terahertz to tens of terahertz. In this frequency band, various resonance phenomena such as electron and phonon excitations in solid materials are usually observed.
Application of Lock - in Amplifier in TDLAS Technology
In the laser phase-locked system, the most crucial part is the use of lock-in amplifier to achieve the test gas, reference gas two-way detection, or even to achieve the measured gas, reference gas and laser background three-way detection.
Application in Photo Acoustic Spectroscopy
Photo Acoustic Spectroscopy (PAS) is an analytical instrument with a mechanism similar to that of a secondary quantum optical spectrometer.
Spectral Detection Based on Monochromator
Spectral measurement system built by a lock-in amplifier and a chopper, only measures the light intensity with a modulated frequency, so as to avoid the influence of other external noise, which can achieve the detection of low light with high precision.
Application of Lock-in Amplifier in Infrared Spectrophotometer
The light from the beam splitter is converted into an electrical signal by the sensor. The sample beam and the reference beam are analyzed by two lock-in amplifiers with respective cut-off frequencies as reference frequencies, and the ratio of the two beams is calculated by the comparator.
Measurement Of True Surface Area Of Powder Electrodes By The Constant Potential Square Wave Method
In the chemical power supply, rarely used by a single material manufactured plate electrode (or called the whole electrode), and most of the powder porous electrode.
Anti-corrosion Treatment of Steel and Its Corrosion Resistance Test (1)
Corrosion of steel is strongly influenced by the environment, and corrosion under moist atmospheres and other humid gases is the most common corrosion phenomenon. In addition, since steel is the most commonly used metal in the manufacture of industrial equipment, the corrosive environment of industrial electrolytes and gases is even more hostile.
Anti-corrosion Treatment of Steel and Its Corrosion Resistance Test (2)
The experiment was divided into four parts: pretreatment of the specimens, electrodeposition of Zn-Ni alloy coating, corrosion of the specimens observed by metallurgical microscope, and Tafel curve test of the specimens in NaCl.
Measurement And Analysis Of Hydrogen Precipitation From Aqueous Solutions
The precipitation of hydrogen is the most common reaction in the aqueous solution system, is the basic reaction of electrolysis of water, but also the secondary battery charging process, electroplating process is often accompanied by side reactions, therefore, is a common and important reaction in the electrochemical system.
Cyclic Voltammetry To Test Lithium Storage Behaviour Of Electrode Materials With Pseudocapacitor
Cyclic voltammetry has been widely used in electrochemical research due to its features of simple experiment, abundant information and theoretical analysis. For example, it can be used to quantitatively analyse the peak current, qualitatively analyse the peak potential difference, determine the reversibility of electrode processes, explore the electrochemical behaviour of unknown electrochemical systems, and apply it in various fields of applied electrochemistry.
Analysis Of Electrochemical Reactions In Lithium-Ion Batteries By The AC Impedance Method
The AC impedance method is also known as electrochemicalim pedance spectroscopy (EIS) when applied to electrochemical systems. The method involves controlling the current (or potential) through an electrode to vary sinusoidally with time under small amplitude conditions, and simultaneously measuring the pattern of variation of the electrode potential (or current) with time as its response, or directly measuring the AC impedance (or conductance) of the electrode.
Cyclic Voltammetry to Test Electrochemical Reactions of Metals in Solution
Cyclic voltammetry refers to controlling the potential under study to scan from the initial potential to the reverse potential at a constant speed, changing the scanning direction, scanning back to the initial potential at the same speed, and continuing to reverse the potential, repeatedly scanning, and recording the current-potential The curves are called cyclic voltammetry lines.