FAQs Scanning Acoustic Metrology
What is a B-Scan?
A B-scan is a depth-resolving recording of the cross-section of a sample in the X direction. It enables the visualization of internal structures along a defined line.
What is a C-Scan?
A C-scan is a depth-resolving stratified image of a sample in the X and Y directions. It provides a two-dimensional representation of internal structures within a component at a specific depth level.
What is an X-Scan?
An X-scan enables the simultaneous generation of multiple C-scans. This allows larger sample areas to be analyzed efficiently and in a shorter amount of time.
What is a Z-Scan?
A Z-scan is a recording of three-dimensional data sets. It enables a complete volumetric analysis of the sample and provides spatial information about its internal structures.
What is a coupling medium?
A coupling medium is required to examine samples using an acoustic microscope. Since air has a strongly attenuating effect on ultrasound, PVA TePla uses de-ionized water as a coupling medium. Liquids are low-attenuation for ultrasound, which ensures that the highest possible sound frequencies can penetrate the object being examined, resulting in the best possible imaging quality.
What is DI water?
DI water is de-ionized water used as a coupling medium in acoustic microscopy. By removing ions from the water, optimal acoustic transmission is ensured.
What is Time of Flight (TOF)?
Time of Flight refers to the depiction of a height or depth image based on the travel time of the ultrasound signal. It enables precise statements about the depth position of structures within a sample.
What is a wafer?
A wafer is a thin substrate manufactured from ingots. It is used as a base material for electronic components or photoelectric coatings and is a key element in semiconductor manufacturing.
What is a transducer?
The transducer, also known as an energy converter, forms the heart of the acoustic microscope. It converts electrical energy into sound waves and receives the reflected signals for image processing.
What is a waterfall transducer?
A waterfall transducer uses a nozzle to wet the component being examined with DI water. This ensures uniform acoustic coupling between the transducer and the sample without the need to fully submerge the component in water.