GAAS SUBSTRATE THICKNESS MEASUREMENT
Industry Semiconductor Applications Gaas Substrate Thickness Measurement Measurement Type 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 capacitive [...]
Spindle Run Out
Industry Automotive Applications Spindle Run Out Measurement Type Positioning Description Rotating targets frequently have an intermittent, uncertain or nonexistent ground path. This introduces unwanted noise, instability, drift and reduces accuracy of the measurement. MTI Instruments offers a unique “Push-Pull” capacitance measurement system that does not require a grounded target. It utilizes two probes, built into one body, that work together to complete the ground path. One probe pushes current into the brake rotor while the adjacent probe pulls the current out. The result is a “clean”, consistent electrical sensing path. As the [...]
Testing Energy-Efficient Washing Machines with the PA900 Power Analyzer
Application Note: Testing Energy-Efficient Washing Machines with the PA900 Power Analyzer Introduction Today’s consumers demand home appliances that use less energy and water. Washing machines are no exception. Manufacturers must meet strict energy labeling standards and provide proof that their products are truly efficient. This means accurate, repeatable measurements of electrical power and energy use throughout a full wash cycle are essential. The Vitrek PA900 Power Analyzer is an ideal tool for this task. Testing Challenges Testing a washing machine for energy efficiency isn’t as simple as reading its average power draw. Wash cycles can last over an [...]
CAPACITANCE SENSORS FACILITATE 3D IC CONSTRUCTION
[Application Note 70518] To boost device performance, today’s semiconductor and microelectronics manufacturers are building three-dimensional integrated circuits featuring vertically-stacked silicon wafers and dies. The rationale is simple. Exploiting the Z-axis avoids the power and footprint penalties associated with two-dimensional processes. Implementing the rationale, however, is not so simple. Going vertical requires coplanar surfaces to make contact with all pins, pads, and pillars. Problem Typically, manufacturers measure the angle and gap between two planes to determine coplanarity. Bonding tool actuators rely on these angle/gap measurements to adjust components and make sure all device pins and/or solder balls reside on the [...]
CAMERA SHIELD MEASUREMENT
Equipment Setup Equipment Used DTS-25-04 laser head Rotary Stage PC with Digital Microtrak Basic Support software Setup Power is automatic mode. Filter is 100Hz Sample rate is 1000 samples sec The head was operated in diffuse mode (not specular/tilted) Validation of Setup The setup should be validated by performing a total runout scan on the rotary stage with no target present. The stage should be cleaned with Isopropyl alcohol and allowed to dry prior to the scan. This reduces any dust or dirt accumulation which will give a false reading of runout. A 360-degree runout of the rotary table, [...]
MONITOR ROLLER GAPS AND PARALLELISM
Easy Roller Gap Measurement Ensures Calendering Success 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. Problem Establishing a roller gap and checking for parallelism across roller width can be a slow and cumbersome procedure. Manual measurement requires multiple sized feeler gauges which can introduce errors. Misinterpreting feeler gauge drag, [...]
Press Release: MTI’s Proforma 300iSA Combines SEMI and ASTM Standard Compliance in Space-Efficient Benchtop Design
MTI's Proforma 300iSA Combines SEMI and ASTM Standard Compliance in Space-Efficient Benchtop Design The Proforma 300iSA combines ASTM and SEMI standard measurements in a compact, desktop system for flexible semiconductor metrology. Lockport, IL, November 18, 2025 – Vitrek, a leading U.S. designer of precision measurement systems, has introduced the MTI Instruments Proforma 300iSA Semi-Automated Metrology System. The benchtop system delivers full SEMI and ASTM compliance in a compact footprint—offering laboratory-grade precision without the space demands of traditional floor-mounted equipment. “The Proforma 300iSA represents a fundamental shift in how manufacturers approach precision metrology,” said Todd Stukenberg, President at [...]
Ultra-Low Standby Power Testing Made Simple with Vitrek Power Analyzers and EN50564:2011
Application Note: Ultra-Low Standby Power Testing Made Simple with Vitrek Power Analyzers and EN50564:2011 Introduction Electronic devices sold in energy-conscious markets must meet strict standby and off-mode power limits as defined by standards like IEC62301 and EN50564:2011. This application note shows how Vitrek’s PA920 Series Precision Power Analyzers deliver accurate and repeatable measurements — often in the milliwatt range — fully aligned with EN50564:2011. The PA920 provides superior low-current measurement range, high-resolution digitizing, and configurable triggering, making it ideal for capturing stable and unstable (mode-switching) standby loads with confidence. Measurement Challenges & EN50564 Requirements The Vitrek PA920 precision [...]
Press Release: Vitrek Breakthrough: Time-Saving MTI “Trim Balance Wizard” Now Available for Mid-Frame Jet Engine MROs
Vitrek Breakthrough: Time-Saving MTI “Trim Balance Wizard” Available for Mid-Frame Jet Engine MROs Innovative Trim Balance Wizard Enables Fast Turbine Balancing by Novice Technicians. Lockport, IL—November 5, 2025 — Vitrek, LLC, a maker of high- precision measurement equipment, has integrated the MTI Trim Balance Wizard, an advanced guided-balancing interface into its PBS eXpress turbine vibration and balancing system for smaller frame jet engines. The Trim Balance Wizard functionality was previously only available to large jet makers and MROs as part of the standard PBS product line. Now incorporated into the PBS eXpress this same labor-saving technology is [...]
Windshield Manufacturing
Industry Automotive Applications Oil Film Measurement Type Level Description In order to maintain proper profile and thickness within a glass furnace the extrusion plate spacing must be maintained at a predetermined gap. Unfortunately, due to process changes and temperature swings this gap can fluctuate significantly in short periods of time. This variation causes the glass thickness to change (check out our glass thickness measurement devices to accurately measure thickness), producing uneven temperature gradients and creating potentially weak glass panels. To control this critical parameter the manufacturing process requires automated active feedback [...]






