Robotic Weld Inspection
Automotive Robotic Weld Inspection Presence/Absence Description
Acoustic Engineering with Stimulus Response System
Acoustic Engineering with Stimulus Response System Customer Case The performance of music without electrical amplification requires precise acoustic engineering of its venues. A customer advises concerning large-scale renovations to existing cathedrals, concert halls and opera houses. Renovations may include decoupling the structure from its surroundings to minimize outside noise and redesigning the interior in order to optimize echo patterns. Buildings are acoustically characterized with precision sound equipment. A sound Stimulus, S(t), is generated by a loudspeaker and the Response, R(t) is received by a microphone, where t is time. Usually, the loudspeaker and microphone are positioned at the musician [...]
Sheet Metal Monitoring
Sheet Metal Monitoring Automotive Sheet Metal Monitoring Thickness Description Introduction: When sheet metal is formed in a continuous process it needs monitoring during the actual feed prior to machining or forming to prevent defects and scrap.  One way to accomplish this is to use a laser sensor to measure the thickness. Problem: A major electrical equipment manufacturer needed a way to monitor the incoming material just prior to shearing and forming. The device needed to be robust, non-contact, reliable, accurate, and fast. The client would be using their data acquisition [...]
Wire Bonding
Wire Bonding Semiconductor Wire Bonding Level Description Introduction What is Wire Bonding? Wire bonding is a critical semiconductor manufacturing process that creates electrical connections between integrated circuits (ICs) and their packaging substrates. This wire bonding technique uses ultra-thin bond wires, typically made of gold or aluminum, to establish reliable electrical pathways in microelectronics applications. Understanding Wire Bond Fundamentals A typical wire bond consists of bonded wire connecting a die pad to a substrate pad on a PC board. The bond wire diameter varies between 18 and 50 microns, with 25 microns [...]
GaAs Substrate Thickness Measurement
Semiconductor Gaas Substrate Thickness Measurement Thickness Description Measuring Thickness of Wafers with Different Chemistries Introduction:  Silicon wafers are ordinarily highly conductive and easy to measure with standard capacitive displacement sensors (See MTI's Proforma 300i). Measuring the thickness of GaAs wafers that have high bulk resistivity (>10k Ohm/cm) is a little more difficult because the wafers act as non-conductive insulators in a capacitive sensor's measuring field. Fortunately, MTI has a solution to this problem. Solution:  It’s possible to measure the thickness and TTV of high resistivity semiconducting wafers (like GaAs) using non-contact [...]
Photolithography Using Capacitance Sensors
Photolithography Using Capacitance Sensors Semiconductor Photolithography Using Capacitance Sensors Positioning Description When it comes to photolithography, how accurate are our sensors? Accurate enough to measure this: ​   Photo by D. Carr and H. Craighead, Cornell The world's smallest guitar is 10 micrometers long -- about the size of a single cell -- with six strings each about 50 nanometers, or 100 atoms, wide. Made by Cornell University researchers from crystalline silicon, it demonstrates a new technology for a new generation of electromechanical devices. Even the world’s smallest guitar’s 2 micron [...]
Adding a Digital Panel Meter to MTI Analog Output Products
Adding a Digital Panel Meter to MTI Analog Output Products Consumer Electronics Electronics Parts Profiling Thickness Description Some MTI Products with Analog outputs, Accumeasure 9000 and Microtrak 3 laser How To Use Digital Displays with Analog Outputs MTI Microtrak 3 Lasers and some of our Accumeasure amplifiers such as the Accumeasure 9000 only have analog outputs. If you wish to add a digital display, then the Lascar Panel pilot © makes a nice cost effective (~ $110) addition - Fig 1. These Digital panel meters have both 1 [...]
Case-In-Point: Step Height Measurement (Thickness) of Copper Foil or EV Battery Film on a Roller Rig GalleryCase-In-Point: Step Height Measurement (Thickness) of Copper Foil or EV Battery Film on a Roller Rig
Application Notes-MTI, Brand-MTI, Industry-Automotive, Industry-Battery, Industry-Compliance Testing, Industry-Consumer Products, Industry-Sensors, Industry: Transportation, Products-MTI-Capacitance
Case-In-Point: Step Height Measurement (Thickness) of Copper Foil or EV Battery Film on a Roller Rig
Step Height Measurement (Thickness) of Copper Foil or EV Battery Film on a Roller Rig Leverage MTI Instruments’ digital Accumeasure system to measure the thickness of the material used as anode and cathode plates in rechargeable Li-Ion battery cells Many roll-to-roll finishing processes typically use a calender, or series of hard pressure rollers, to deliver smooth, high-quality products of plastic, textile, or paper (Fig 1). Ensuring a consistent material thickness, however, depends on the ability to monitor, and maintain, a precise gap between rollers. This application note describes a quick and easy means for roller gap measurement. Introduction [...]
Automotive Engine Controller Monitoring
Automotive Engine Controller Monitoring Customer Case The customer is a major electronics manufacturer who wants to find a cost effective replacement to VXI digitizers in testing automotive engine control signals. The requirement is for several ATE stations. Each one will require 4 single-ended channels or 2 "true differential" channels, 4 MHz of input analog bandwidth (mostly single shot) with voltage ranges from 0.05 to 70 volts. The digitizers must have at least 12 bits of vertical resolution, 0.5% accuracy and ½ MegaSample per channel of acquisition memory. The customer would like to operate the station under a controlling LabVIEW [...]
Fiber Optic Automated Measurement System
Fiber Optic Automated Measurement System Customer Case The customer is in the business of developing lasers and LED components for fiber optic data \ telecommunications applications. The requirement is for an automated test system to monitor the pulse characteristics of the laser. The customer will require 3 channels at high vertical resolution due to the fact that some variances in amplitude will be only 1 mV and need to be detected. The goal is to capture 10,000 samples per channel at 50 MegaSamples per second with a 1 KHz to 5 KHz Pulse Repeat Frequency (PRF). The customer would [...]