4.5 Article

Integrated Test Module Design for Microfluidic Large-Scale Integration

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCAD.2022.3213613

关键词

Built-in-self-test (BIST); continuous-flow microfluidics; design for testability; microfluidic large-scale integration (mLSI); testing

向作者/读者索取更多资源

This study proposes the first built-in-self-test (BIST) method for microfluidic large-scale integration (mLSI) chips, which greatly improves the test efficiency by directly testing the control channels instead of individual valves. The test module has moderate area overhead and the test method is easy to operate, without the need for specialized software or external pressure sensors. Experiments show that this test approach is sensitive enough to detect defects as small as 10 μm in size and located several centimeters away from the test module.
Microfluidic large-scale integration (mLSI) is a promising lab-on-a-chip platform for high-throughput bio-applications. Due to the high integration scale and the small feature size, control channels on mLSI chips are prone to blockage and leakage defects, which may lead to faulty behavior of valves and erroneous experimental results. Thus, mLSI chips need to be tested before usage. Current mLSI-tests are mostly performed in a straightforward way by testing each valve individually, which is very time consuming and error prone. As the integration scale of mLSI chips keeps increasing, there is a pressing demand for more efficient test approaches. This work proposes the first built-in-self-test (BIST) method for mLSI with an integrated test module design. Instead of testing individual valves, the proposed method directly tests the control channels and thus greatly improves the test efficiency. Only (n/2) and [log(2)(n + 1] test operations are required to test the blockage and leakage defects, respectively, of n control channels. The proposed test module consumes moderate area overhead and the test method is easy to operate. Neither specialized software nor external pressure sensors are required for carrying out the tests. Experiments show that our test approach is sensitive enough to detect defects that have a feature size as small as 10 mu m and that are several centimeters away from the test module.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据