4篇
您的检索式：作者名="ZENG LVMING"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Low-cost photoacoustic imaging systems based on laser diode and light-emitting diode excitation显示文摘Photoacoustic imaging,an emerging biomedical imaging modality,holds great promise for preclinical and clinical researches.It combines the high optical contrast and high ultrasound resolution by converting laser excitation into ultrasonic emission.In order to generate photoacoustic signal e±-ciently,bulky Q-switched solid-state laser systems are most commonly used as excitation sources and hence limit its commercialization.As an alternative,the miniaturized semiconductor laser system has the advantages of being inexpensive,compact,and robust,which makes a signi¯cant e®ect on production-forming design.It is also desirable to obtain a wavelength in a wide range from visible to nearinfrared spectrum for multispectral applications.Focussing on practical aspect,this paper reviews the state-of-the-art developments of low-cost photoacoustic system with laser diode and light-emitting diode excitation source and highlights a few representative installations in the past decade. | Qingkai Yao Yu Ding Guodong Liu Lvming Zeng | 2017 | Journal of Innovative Optical Health Sciences2017，，4： | 1 |
| 2 | Portable optical-resolution photoacoustic microscopy with a pulsed laser diode excitation显示文摘 | ZENG LVMING LIU GUODONG YANG DIWU | 2013 | Applied Physics Letters2013，102，05： | 1 |
| 3 | Local Stress Measurement in Thin Aluminum Plates based on Zero-Group-Velocity Lamb mode显示文摘The stress state is critical to the reliability of structures,but existing ultrasonic methods are challenging to measure local stress.In this paper,zero-group-velocity(ZGV)Lamb mode was proposed to measure the local stress field in thin aluminum plates.The Lamb wave’s dispersive characteristics under initial stress were analyzed based on the FloquetBloch theory with Murnaghan hyperelastic material model.The obtained dispersion curves show that higher-order Lamb wave modes near the cut-off frequencies are sensitive to applied stress across the plate,indicating that the S1-ZGV mode has a rather high sensitivity to stress.Similar to conventional ultrasonic stress measurement,it is found that the frequency of the S1-ZGV mode changes near-linearly with the amplitude of applied stress.Numerical experiments were conducted to illustrate the feasibility of local stress measurement in a thin aluminum plate based on the S1-ZGV mode.Single and multiple localized stress fields were evaluated with the S1-ZGV method,and reconstructed results matched well with actual stress fields,proving that the ZGV Lamb wave method is a sensitive stress measurement technique in thin plates. | Weiming Xuan Maodan Yuan Xuanrong Ji Wenjin Xu Yan Chen Lvming Zeng | 2023 | Chinese Journal of Mechanical Engineering2023，36，2： | 0 |
| 4 | Photoacoustic microscopy based on transparent piezoelectric ultrasound transducers显示文摘Photoacoustic microscopy(PAM),due to its deep penetration depth and high contrast,is playing an increasingly important role in biomedical imaging.PAM imaging systems equipped with conventional ultrasound transducers have demonstrated excellent imaging performance.However,these opaque ultrasonic transducers bring some constraints to the further development and application of PAM,such as complex optical path,bulky size,and difficult to integrate with other modalities.To overcome these problems,ultrasonic transducers with high optical transparency have appeared.At present,transparent ultrasonic transducers are divided into optical-based and acoustic-based sensors.In this paper,we mainly describe the acoustic-based piezoelectric transparent transducers in detail,of which the research advances in PAM applications are reviewed.In addition,the potential challenges and developments of transparent transducers in PAM are also demonstrated. | Hangbing Peng Zhongwen Cheng Lvming Zeng Xuanrong Ji | 2023 | Journal of Innovative Optical Health Sciences2023，16，5： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员