Background-free imaging of luminescent nanodiamonds using external magnetic field for contrast enhancement
Background-free imaging of luminescent nanodiamonds using external magnetic field for contrast enhancement
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DOI：
10.1364/ol.38.001847
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发表时间：
2013-06-01
期刊：
影响因子：
3.6
通讯作者：
Plakhotnik, Taras
中科院分区：
文献类型：
--
作者：
Chapman, Robert;Plakhotnik, Taras
我们展示了一种对比度增加的方式，在宽视场的金刚石纳米晶体的光学图像包含氮空位（NV）中心周围的自发荧光材料，在细胞间成像的情况下。从当不存在场时测量的相同区域的图像中减去在存在约25 mT的外部磁场的情况下拍摄的图像消除了背景并增强了对比度，因为NV中心的发光在存在场的情况下降低，而自动发光不受影响。(C)2013年美国光学学会
We demonstrate a way of contrast increasing in wide-field optical images of diamond nanocrystals containing nitrogen-vacancy (NV) centers surrounded by an autofluorescing material, as in the case of intercellular imaging. Subtraction of an image taken in the presence of an external magnetic field of about 25 mT from an image of the same area measured when the field was absent eliminates the background and enhances the contrast because luminescence of the NV centers decreases in the presence of the field while the auto luminescence is not affected. (C) 2013 Optical Society of America