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Articles 61 - 66 of 66
Full-Text Articles in Mechanical Engineering
Numerical Analysis Of Rapid Micromixers Utilizing Magnetic Particles, Yiou Wang, Jiang Zhe, Benjamin Chung, Prashanta Dutta
Numerical Analysis Of Rapid Micromixers Utilizing Magnetic Particles, Yiou Wang, Jiang Zhe, Benjamin Chung, Prashanta Dutta
Dr. Jiang Zhe
No abstract provided.
Zwitteration Of Dextran: A Facile Route To Integrate Antifouling, Switchability And Optical Transparency Into Natural Polymers, Bin Cao, Linlin Li, Haiyan Wu, Qiong Tang, Bingbing Sun, He Dong, Jiang Zhe, Gang Cheng
Zwitteration Of Dextran: A Facile Route To Integrate Antifouling, Switchability And Optical Transparency Into Natural Polymers, Bin Cao, Linlin Li, Haiyan Wu, Qiong Tang, Bingbing Sun, He Dong, Jiang Zhe, Gang Cheng
Dr. Jiang Zhe
This communication reports a facile method for zwitteration of dextran with carboxybetaine (CB), which integrates superior antifouling properties, switchability between zwitterionic and cationic forms, as well as enhanced optical transparency into one polysaccharide material. This study provides a new avenue for generating multifunctional zwitterionic CB materials in situ.
A High Sensitivity Inductive Sensor For Blade Tip Clearance Measurement, Li Du, Xiaoliang Zhu, Jiang Zhe
A High Sensitivity Inductive Sensor For Blade Tip Clearance Measurement, Li Du, Xiaoliang Zhu, Jiang Zhe
Dr. Jiang Zhe
A multiplexed inductive sensor consisting of multiple mini-sized planar spiral coils for detecting multiple tip clearances of rotor blades is presented. The sensor measures the tip clearances by monitoring the inductance changes of planar spiral coils caused by the passage of the rotor blades. A resonance frequency division multiplexing technique and parallel LC resonance measurement were applied to the multiple sensor coils, making it feasible to measure multiple tip clearances using only one set of measurement electronics with high sensitivity and resolution. The results from tests conducted on a bench-top test rig have demonstrated that the sensor is capable of …
Label-Free Biomarker Assay In A Microresistive Pulse Sensor Via Immunoaggregation, Yu Han, Haiyan Wu, Fan Li, Gang Cheng, Jiang Zhe
Label-Free Biomarker Assay In A Microresistive Pulse Sensor Via Immunoaggregation, Yu Han, Haiyan Wu, Fan Li, Gang Cheng, Jiang Zhe
Dr. Jiang Zhe
We present a label-free biomarker detection method based on immunoaggregation and resistive pulse sensing technology. In this approach, target biomarkers and antibody (Ab)-functionalized microparticles are mixed to form biomarker–microparticle aggregates. A resistive pulse sensor is then used to measure the sizes and count the number of aggregates. The measured volume fraction of the aggregates represents the concentration of the targeted biomarker. In our tests, human ferritin, used as a biomarker, triggered the aggregation of antiferritin Ab-functionalized microparticles in phosphate-buffered saline (PBS). The volume fraction of aggregates increased with the increased ferritin concentration. We also demonstrated the detection of human ferritin …
Continuous Size-Based Separation Of Microparticles In A Microchannel With Symmetric Sharp Corner Structures, Liang-Liang Fan, Xu-Kun He, Yu Hun, Li Du, Liang Zhao, Jiang Zhe
Continuous Size-Based Separation Of Microparticles In A Microchannel With Symmetric Sharp Corner Structures, Liang-Liang Fan, Xu-Kun He, Yu Hun, Li Du, Liang Zhao, Jiang Zhe
Dr. Jiang Zhe
A new microchannel with a series of symmetric sharp corner structures is reported for passive size-dependent particle separation. Micro particles of different sizes can be completely separated based on the combination of the inertial lift force and the centrifugal force induced by the sharp corner structures in the microchannel. At appropriate flow rate and Reynolds number, the centrifugal force effect on large particles, induced by the sharp corner structures, is stronger than that on small particles; hence after passing a series of symmetric sharp corner structures, large particles are focused to the center of the microchannel, while small particles are …
An Integrated Lubricant Oil Conditioning Sensor Using Signal Multiplexing, Zhu Xiaoliang, Li Du, Jiang Zhe
An Integrated Lubricant Oil Conditioning Sensor Using Signal Multiplexing, Zhu Xiaoliang, Li Du, Jiang Zhe
Dr. Jiang Zhe
One effective approach to detect signs of potential failure of a rotating or reciprocating machine is to examine the conditions of its lubrication oil. Here we present an integrated oil condition sensor for detecting both wear debris and lubricant properties. The integrated sensor consists of miniature multiplexed sensing elements for detection of wear debris and measurements of viscosity and moisture. The oil debris sensing element consists of eight sensing channels to detect wear debris in parallel; the elements for measuring oil viscosity and moisture, based on interdigital electrode sensing, were fabricated using micromachining. The integrated sensor was installed and tested …