哈佛的美女教授
标题党一下http://zhuang.harvard.edu/group.html
搜罗了一些3D3C测量的文章准备看，无意中连接到了这个主页。
教授庄晓薇，应该很有名了吧？不过不是流体这个行当的。
看人家的publiction list不由得长叹一声。
话说回来这个3D3C，lavision弄得TomoPIV实在太贵而且太麻烦，计算时间长。
Dantec的那个有镜头的限制。TSI的V3V问题更多。
现在发现Astigmatic似乎是很有前途的办法，只要一个相机加一个柱面镜就可以实现3D3C测量了。处理起来也很简单。只是不知道为什么还没有商业化。也许是因为受到离子密度的限制，空间分辨率太低了？或者是精度不够好？ 太标题党了，呵呵
搜了一下，可能因为应用面太窄吧？
Astigmatism particle tracking velocimetry (APTV) is a method to determine three components (3C) of the velocity field in a volume (3D) using a single camera. The depth position of the particles is coded by optical distortions caused by a cylindrical lens in the optical setup. This technique is particularly suited for microfluidic applications as measurement errors due to spatial averaging and depth of correlation, typically encountered with μPIV approaches, are eliminated so that the measurement precision is enhanced. Unfortunately, the current state of the technique is limited by the small measurement region achievable with the current calibration procedures as well as by higher order image aberrations (Cierpka et al 2010 Meas. Sci. Technol. 21 045401). In order to extend the size of the measurement volume and to account for all image aberrations, a new intrinsic calibration procedure, based on the imaging function of the particles, is proposed in the paper at hand. It provides an extended measurement depth, taking into account all image aberrations. In this work, the calibration procedure was applied to a μPIV arrangement but could also be implemented on macroscopic experimental setups. The calibration procedure is qualified with synthetic data as well as Poiseuille flow in a straight rectangular micro-channel with a cross-sectional area of 200 × 500 μm2. The three-dimensional velocity distribution of the whole channel was resolved via APTV with uncertainties of 0.9% and 3.7% of the centerline velocity, uc, for the in-plane and out-of-plane components, respectively. Further investigations using different cylindrical-lens focal lengths, magnifications and particle sizes provide information about achievable measurement depths and help to design and adapt the optimal system for the desired experiment.
回复 2# zyzyeast 的帖子
按浏览数来算标题党还算成功。论文作者通常只说好的，只有自己做了， 才知道到底有多少问题。
我想在micropiv方面还是有前途的。只不过处理方法还需要改进。 庄晓薇 他爹是学流体的中科大的教授 good to know.
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