Used VEECO / SLOAN Mark II+ #9211204 for sale

VEECO / SLOAN Mark II+ is a laboratory instrument for measuring electrical and thermal properties of thin films. It is used to measure film resistivity, film thickness, thermal diffusivity, thermal conductivity, and film surface roughness. It features a built-in display and thermal test head for ease of operation. VEECO Mark II+ utilizes an indirect thermal method of measuring resistivity. This method calculates the electrical resistance and the thermal resistance of the film separately. The instrument acquires data from a thin film sample via a four-point contact method. A voltage is applied to two contacts and the resulting current creates a heat flow in the sample as well as a temperature differential between the two contact points. The resistance of the film is calculated based on the measured current and temperature difference. The instrument can measure a range of film thicknesses from 0-100 μm, with an accuracy of 0.1 μm. It features a low temperature accuracy of 0.1°C and a high temperature accuracy of 0.5°C. The maximum temperature for a sample tested with SLOAN Mark II+ is 400°C. Mark II+ can be used to measure the thermal diffusivity, thermal conductivity, and surface roughness of the sample. Thermal diffusivity is calculated using a four-point probe method which utlizes the temperature change when a known heat flux is applied. Thermal conductivity is calculated using a three-point probe method which measures the electrical resistance as a function of the temperature. The surface roughness of the sample is measured using a laser interferometer. VEECO / SLOAN Mark II+ accessory kit includes the instrument, a controller, and user software. The instrument is protected by a carrying case and thermal shock protection. The accessory kit also includes sample holders, temperature probes, heat flux sensors, and calibration resistors for use with the instrument. VEECO Mark II+ is a versatile and reliable instrument for measuring electrical and thermal properties of thin films. Its four-point contact method of measuring resistivity and its ability to measure surface roughness make it an ideal instrument for electrical and thermal studies. The instrument is user-friendly and easy to transport, making it convenient for all types of laboratory uses.