Theta Knowledge base
– Attension, Biolin –
Standard Test Method for Interfacial Tension of Oil Against Water by the Ring Method
This application note describes the measurement of interfacial tension between oil and water under non- equilibrium conditions by using the ring method according to the ASTM standard.
– Attension –
Contact angle – What is it and how do you measure it?
Contact angle, θ (theta), is a quantitative measure of wetting of a solid by a liquid. The behavior of single drop on a surface tells you a lot about the…
Product Brochure
Attension® Theta Silicon Wafer stage
Advanced Wettability Measurements for Silicon Wafers
The Attension Theta Wafer is a highly accurate, automated instrument designed to simplify repetitive contact angle measurements on silicon wafers. Capable of collecting wettability measurements across the entire surface areas of 2″, 3”, 4”, 5”, 6”, 8”, and 12″ wafers, the Theta Wafer system ensures repeatable analysis for semiconductor research and manufacturing facilities.
Key Features:
- Fully automated contact angle measurements eliminate manual steps for increased accuracy and throughput
- Software-controlled rotational and XYZ motorized stages enable precise positioning and mapping of silicon wafers up to 12 inches in diameter
- Automated drop placement and precision disposable tip dispensers ensure repeatable and controlled droplet deposition of up to four different liquids
- Batch mode allows users to preprogram experiment recipes for repetitive measurements in high-throughput applications like QA/QC
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Attension® Theta Silicon Wafer stage
Product Features
Contact angle measurements provide critical insights into the wettability and surface properties of silicon wafers. These measurements play a key role in optimizing processes such as coating, lithography, and bonding, ensuring reliable performance in electronics manufacturing.
Applications of contact angle measurements in semiconductor manufacturing include:
- Assessing Surface Cleanliness – Contact angle measurements can indicate the presence of contaminants or residues, which left unaddressed can affect the success of downstream processes
- Determining Surface Free Energy (SFE) – Theta Wafer’s multi-liquid dispenser enables easy surface energy determination to better understand surface properties
- Analyzing/Predicting Adhesion Properties – Assess how coatings and films adhere to silicon wafers
- Evaluating Hydrophilicity & Hydrophobicity – Optimize lithography and etching processes by understanding surface wettability
- Quality Control – Ensure consistency in wafer processing through routine contact angle measurements
