In the fields of semiconductor, photovoltaic, and microelectronics manufacturing, the surface cleanliness and wettability of single silicon chips directly affect the yield of subsequent coating, bonding, photolithography, and other processes. How to quickly and accurately verify the effectiveness of ultrasonic cleaning as a mainstream cleaning process? Contact angle measurement is the most intuitive zuisensitiveOne of the evaluation methods.

This article uses Beidou instrumentsCA100SFor the testing platform, conduct superhydrophilic contact angle testing on single silicon chips after ultrasonic cleaning, and analyze why this equipment stands out among many domestic contact angle measuring instruments.

Super hydrophilic surface: key indicator of cleaning effect

Ultrasonic cleaning removes particles and organic pollutants from the surface of single silicon chips through cavitation effect. If the cleaned surface exhibits a superhydrophilic state (contact angle<5°) indicates high surface cleanliness and high surface energy, which is beneficial for the stable progress of subsequent processes. On the contrary, if the contact angle is too large, it indicates residual contamination and requires adjustment of the cleaning process.

Therefore, accurate and reproducible measurement of superhydrophilic contact angle has become a core link in quality control and process optimization.

Why recommend Beidou instrumentsCA100S？

Faced with a dazzling array of instruments on the market, Guangdong Beidou Instrument Contact angle measuring instrumentespeciallyCA100SThe model demonstrated three core advantages when testing single silicon chip superhydrophilic samples.

1. High precision injection system, suitable for "ultra-low angle" measurement

The contact angle of superhydrophilic surfaces is usually lower than10°, even as low as2-3Ordinary equipment is prone to significant measurement errors at such low angles.CA100SAdopting a micro upgraded precision injection system, the droplet volume can be controlled within0.5MLInternally, avoid spreading distortion caused by droplet gravity. At the same time, with high-resolution industrial cameras and low distortion telecentric lenses, the true form can be captured from the first frame of liquid droplet contact with the sample.

2. Intelligent fitting algorithm, eliminating human interference

Low angle measurement has high requirements for edge detection algorithms.CA100Sbuilt-inYoung-LaplaceThe equation fitting algorithm and various calculation models (such as circle method, ellipse method, angle measurement method, etc.) are used to automatically select the best model for superhydrophilic samples, avoiding subjective errors caused by manual point selection. The deviation of contact angle values from multiple repeated tests can be controlled within ±0.5Within °, meet high standard quality control requirements.

3. Fast focusing and efficient testing process

Single silicon chips usually have reflective properties, and traditional equipment is time-consuming for focusing.CA100SProvide one click automatic focusing and rapid sample stage lifting function, even when changing chips of different thicknesses, focusing can be completed within seconds. For quality control scenarios that require batch testing, it can greatly improve detection efficiency.

From the superhydrophilicity test performance of single silicon chips after ultrasonic cleaning, it can be seen that the Beidou instrumentCA100SIn terms of accuracy, repeatability, and ease of operation, it has reached or even partially surpassed the level of imported products of the same level.

Test case: Super hydrophilic data of single silicon chips after ultrasonic cleaning

UseCA100STest a batch of single silicon chips treated with standard ultrasonic cleaning process. The specific parameters are as follows:

Test droplet:Deionized water, droplet volume0.8ML

Test Environment:Room temperature, humidity45%

Sample:Single sided polished single silicon chip (tested immediately after cleaning)

Test results:

The contact angle in the central area of the chip is 3.2°, the edge area is4.1The uniformity of the entire film is good. Droplets spread rapidly and evenly, meeting the criteria for superhydrophilicity.

This data indicates that the ultrasonic cleaning process meets the standard for effectiveness. In reverse validation, chips suspected of poor cleaning in the same batch are tested with a contact angle of18.7Confirm the presence of residual contamination on the surface.

From this, it can be seen that the accuracy of the instrument provided by the high-precision contact angle measuring instrument manufacturer directly determines the reliability of the cleaning process judgment. As one of the manufacturers of high-precision contact angle measuring instruments, Beidou InstrumentCA100SReliable performance in single silicon chip applications.

Why recommend domestic Gao end devices?Cost effectiveness from a procurement perspective

In the past, many companies tended to import contact angle measuring instruments, believing that domestic equipment was difficult to meet semiconductor level measurement requirements. But with the maturity of precision optics and algorithm technology in China, Guangdong Beidou Instrument The contact angle measuring instrument has achieved comparable or even superior performance in multiple dimensions.

Price advantage:Compared to imported brands, saving under the same configuration30%-50%Procurement Cost

Local services:Fast response speed, providing on-site installation, debugging, and training

Software customization:Algorithm or report optimization can be carried out based on customer specific needs (such as specific materials, testing standards)

Data docking:Can be connected to the factoryMESSystem, easy to trace and analyze

Therefore, based on the comprehensive evaluation of real test data and services, Beidou instrumentsCA100SIt is a rational and efficient choice.

Suitable for more super hydrophilic scenarios

In addition to ultrasonic cleaning verification of single silicon chips,CA100SThe same applies to:

GlassITOEvaluation of superhydrophilic coatings on conductive glass

Detection of hydrophilic modification effect on the surface of medical devices

Wettability Analysis of Biochips and Microfluidic Devices

Cleanliness assessment of substrate before photoresist coating

These applications all require instruments to have high resolution, low angle recognition capability, and stable environmental adaptabilityCA100SIt is precisely designed for such high demand scenarios.

Summary: Precision comes from expertise, choosing based on data

The ultra hydrophilic contact angle test of single silicon chips after ultrasonic cleaning may seem like a small angle measurement, but it actually tests the comprehensive ability of hardware, algorithm, and operation process at three levels.

Hardware:High precision injection, low distortion optical system

Algorithm:Intelligent fitting, adapting to super hydrophilic morphology

technological process:Quick focus, suitable for batch inspection

Beidou instrumentCA100SSolid performance has been demonstrated in all the above aspects. For customers who are still struggling with which domestic contact angle measuring instrument is good, it may be worth using single silicon chip superhydrophilicity testing as a verification scenario to personally experience itCA100SData stability and ease of operation. Guangdong Beidou Instrument continues to provide high-precision and cost-effective surface performance testing solutions for scientific research and industrial customers.