Blogs
Piezoelectric Device Amplitude
Piezoelectric Device Amplitude Research & Development Piezoceramic, 1-3 Pzt / Polymer Composite And Pvdf Film Amplitude Description Measuring Piezoelectric device amplitude including piezoceramic, 1-3 PZT/polymer composite and PVDF film A “PZT ” is a piezoelectric device which generates motion when a voltage is applied across the crystal. The motion can be anywhere from DC to ultrasonic and the motion is typically very small. PZT devices are used to generate sound and to convert voltage to motion. MTI's MTI-2100 controller in conjunction with a High resolution fiber optic probe such as [...]
Wafer Characterization
Semiconductor Wafer Characterization Surface Description Thickness Measurement ASTM F657: The distance through a wafer between corresponding points on the front and back surface. Thickness is expressed in microns or mils (thousandths of an inch). Total Thickness Variation (TTV) ASTM F657: The difference between the maximum and minimum values of thickness encountered during a scan pattern or series of point measurements. TTV is expressed in microns or mils (thousandths of an inch). Figure above shows a wafer placed between two non-contact measurement probes. By monitoring changes between the upper probe [...]
In-Situ Particle Detection
In-Situ Particle Detection Research & Development In-Situ Particle Detection Presence/Absence Description Introduction:  Foreign particles in food stuffs, plant produce, grains, etc. can lead to customer dissatisfaction when the items are packaged for sale. In some cases — it can be dangerous. Opportunity:  A major cigarette producer contacted MTI Instruments requesting a system to detect extraneous material, metal, plastic, filter fiber, and other contaminants. Background:  A cigarette’s dielectric footprint is controlled by the tobacco packing density, moisture content and the type of tobacco leaf. - packing density is controlled by the [...]
Piezoelectric Stack Motion
Piezoelectric Stack Motion Research & Development Piezoelectric Stack Motion Displacement Description Fotonic sensors are ideal for making dynamic measurement of very small oscillatory motions. Using the MTI-2100 with a spectrum analyzer, angstrom level measurements are possible. Would you like to know more? Okay let’s set up some basic equipment and get started. Piezoelectric crystals expand and contract when voltage is applied across the stack. By controlling the amplitude of the applied signal we control the magnitude of the displacement. The test setup A Spectrum Analyzer A Signal Generator to drive piezo device [...]
HEIGHT GAP OF INKJET PRINTERS
Industry Consumer Electronics Applications Height Gap Of Inkjet Printers Measurement Type Positioning Description Introduction: Inkjet printers require a certain distance between the inkjet print head and the paper. If the distance is set incorrectly, the printed images get blurry. Current state of the art printers have the print head nozzles built right into the bottom of the ink reservoir (B) as shown below. When the ink cartridge is installed in the printer, the inkjet nozzles (made out of silicon) essentially become a grounded target through the connections shown at [...]
Ultrasonic Horn Vibration
Ultrasonic Horn Vibration Research & Development Ultrasonic Horn Vibration Amplitude Description An "ultrasonic horn" is the device which concentrates this energy and applies it to a process. They come in many different sizes and configurations depending on the task for which they are designed. As the tip of the horn (or contraction area) is brought in contact with a part at a certain pressure, frictional heat is generated causing the material to plasticize locally, creating an insoluble connection between two parts within a very short period of time. As the [...]
Exploration Of The Elastic Region For Aluminum Alloys
Exploration Of The Elastic Region For Aluminum Alloys Research & Development Exploration Of The Elastic Region For Aluminum Alloys Bending, Tensile and Compression Description One of the most important properties of metals is their elastic characteristics, defined as the allowable deformation in a given direction from which the metal can return to its original configuration, once the load is removed. Deforming a common aluminum alloy within the elastic region will illustrate this. Relevant formulas and charts will show how to use these metals safely in a variety of industrial applications. [...]
High Precision Portable Signal Generators and Calibrators: Everything You Need to Know
High precision portable signal generators are portable electronic devices that generate highly precise signals for testing, system calibration, sensor simulation, troubleshooting, and monitoring. Unlike the benchtop signal generators that are used in laboratories, these hand-held portable devices are designed to be used in the field. The best high precision portable signal generators are also rugged and NIST traceable, meaning that their manufacturer calibrates them to standards from the National Institute of Standards and Technology (NIST). In terms of cost, high precision portable signal generators are more expensive than less precise, lower-end devices that can be held in the hand; [...]
Advantages of Measuring Semiconductor Thin Film Thickness with Capacitance GalleryAdvantages of Measuring Semiconductor Thin Film Thickness with Capacitance
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Advantages of Measuring Semiconductor Thin Film Thickness with Capacitance
Semiconductor Thin Films: Measuring Thickness with Capacitance In the semiconductor industry, thin films are deposited onto silicon and other wafer materials one atomic layer at a time. The thickness of these extremely thin coatings is important because thin-film thickness affects the wafer’s electrical, optical, and mechanical properties. With semiconductors, either conductive metallic films or non-conductive metal oxide films are deposited. There are two main thin-film coating methods, chemical vapor deposition (CVD) and physical vapor deposition (PVD), both of which use a variety of processes. Because the coatings for semiconductor wafers are so thin, thickness measurement require a high degree [...]
Press Release: Vitrek Offers Metrologists Laboratory-Level Accuracy in a Portable, Battery Operated DC Calibrator GalleryPress Release: Vitrek Offers Metrologists Laboratory-Level Accuracy in a Portable, Battery Operated DC Calibrator
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Press Release: Vitrek Offers Metrologists Laboratory-Level Accuracy in a Portable, Battery Operated DC Calibrator
Vitrek Offers Metrologists Laboratory-Level Accuracy in a Portable, Battery-Operated DC Calibrator The XiTRON 2000 Series provides flexibility when calibrating thermocouple, pressure, flow and DC voltage instrumentation; portable DC calibrator’s performance rivals costlier devices traditionally used in lab settings […]