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Using state-of-the-art magnetic imaging, a Cornell-led collaboration has for the first time characterized a key property of the superconducting state of a class of atomically thin materials that are t...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Fast Magnetic Resonance Imaging and Inverse Problems
快速 磁共振成像 逆问题
2023/4/17
磁共振成像是目前医学成像技术中功能最强大，技术门槛最复杂的技术之一。然而，相对其他成像模态较为缓慢的采集速度（较长的扫描时间）制约了磁共振成像在临床上的广泛应用。借助采样样本的数量与扫描时间的正比关系，通过减少采集的数据量（稀疏采样）来缩短磁共振采集时间是磁共振成像领域的重要途径，而从高度欠采样的数据中重建出高质量的图像可以近似为一个病态反问题，对这一问题的求解是快速磁共振成像领域的研究热点。本次...
Imaging Dissipative Transport in Carbon Nanotube Network Transistors
Imaging Dissipative Transport Carbon Nanotube Network Transistors
2010/11/24
We use infrared thermometry of carbon nanotube network (CNN) transistors and find the forma-tion of distinct hot spots during operation. However, the average CNN temperature at breakdown is significan...
Imaging Stacking Order in Few-Layer Graphene.
Three dimensional optical manipulation and structural imaging of soft materials by use of laser tweezers and multimodal nonlinear microscopy
Liquid crystals Optical tweezers or optical manipulation Nonlinear microscopy
2010/11/24
We develop an integrated system of holographic optical trapping and multimodal nonlinear microscopy and perform simultaneous three-dimensional optical manipulation and non-invasive structural imaging ...
Towards T1-limited magnetic resonance imaging using Rabi beats
T1-limited magnetic resonance imaging Rabi beats
2010/10/18
Two proof-of-principle experiments towards T1-limited magnetic resonance imaging with NV cen-
ters in diamond are demonstrated. First, a large number of Rabi oscillations is measured and it is demons...