Data from article: "Wide‑field magnetometry using nitrogen‑vacancy color centers with randomly oriented micro‑diamonds"

Data from the journal article:

Sengottuvel, S. et al (2022). Wide‑field magnetometry using nitrogen‑vacancy color centers with randomly oriented micro‑diamonds. Scientific  Reports.

DOI: https://doi.org/10.1038/s41598-022-22610-5

This repository contains the dataset obtained from the CW-ODMR magnetic imaging experiment with nitrogen-vacancy (NV) centers using a custom-built wide-field setup.

Data files and format:

 It consists of 24 individual data files labelled chronologically starting from f0.fits to f24.fits . The data format is Flexible Image Transport System (FITS). Each FITS file is made up of a header and 3-dimensional image data. The header contains the experimental parameters set during the data acquisition which might be useful for the data analysis as well. The FITS file can be read using any software (e.g., Matlab, Python) that supports the reading of FITS file format.

An example header:

    {'STARFREQ'}    {[                 2700]}                 {' in MHz                                         }
    {'STOPFREQ'}    {[                 3000]}                {' in MHz                                         '}
    {'STEPSIZE'}      {[    1.500000000000000]}    {' Frequency interval                       '}
    {'MWPOWER'}   {[                    5]}                    {' in dBm                                         '}
    {'NSCANS'}        {[                    5]}                    {' Total number of scan repetitions  }
    {'EXPOSURE'}   {[                   20]}                   {' in ms                                            '}
    {'FPS'}                {[ 20]}                                     {' no. of frames per second              }
    {'LEDCURR'}      {[    0.990000000000000]}     {' LED current in mA                        }
    {'EXPTIME'}       {[1.942112698000000e+02]}  {' Measurement time in seconds    '}
    {'END' }              {0×0 char               }                {0×0 char                                        }

Table: Data file name and the associated current value set in the wire during the magnetic imaging measurement

File name
Current value (mA)
File name
Current value (mA)

f0.fits
0
f13.fits
-300

f1.fits
+50
f14.fits
-550

f2.fits
+100
f15.fits
-250

f3.fits
-50
f16.fits
+550

f4.fits
-100
f17.fits
+350

f5.fits
-150
f18.fits
+400

f6.fits
+250
f19.fits
-400

f7.fits
+450
f20.fits
-450

f8.fits
+600
f21.fits
-500

f9.fits
-200
f22.fits
+150

f10.fits
-350
f23.fits
+300

f11.fits
+200
f24.fits
-600

f12.fits
+500

For more information on the data analysis methods and results, we recommend you to read the article.

本数据集源自以下期刊论文：
Sengottuvel, S. 等人 (2022)。采用随机取向微米金刚石氮空位（nitrogen-vacancy, NV）色心的宽场磁强测量。《科学报告》(Scientific Reports)。
DOI: https://doi.org/10.1038/s41598-022-22610-5

本数据仓库包含使用定制化宽场装置，针对氮空位（NV）色心开展的连续波光学检测磁共振（continuous-wave optically detected magnetic resonance, CW-ODMR）磁成像实验所获取的数据集。

数据文件与格式：
本数据集包含24个独立数据文件，按时间顺序命名为f0.fits至f24.fits。数据格式为可移植图像传输系统（Flexible Image Transport System, FITS）。每个FITS文件均由文件头与三维图像数据构成。文件头包含数据采集阶段设置的实验参数，该类参数可辅助后续数据分析。任意支持FITS格式读取的软件（如Matlab、Python）均可读取该类文件。

示例文件头：
{'STARFREQ'} {[2700]} {' 单位：MHz'}
{'STOPFREQ'} {[3000]} {' 单位：MHz'}
{'STEPSIZE'} {[1.500000000000000]} {' 频率步长'}
{'MWPOWER'} {[5]} {' 单位：dBm'}
{'NSCANS'} {[5]} {' 扫描重复总次数'}
{'EXPOSURE'} {[20]} {' 单位：ms'}
{'FPS'} {[20]} {' 每秒帧数'}
{'LEDCURR'} {[0.990000000000000]} {' LED电流，单位：mA'}
{'EXPTIME'} {[1.942112698000000e+02]} {' 测量时长，单位：秒'}
{'END'} {0×0 字符数组} {0×0 字符数组}

表格：磁成像测量过程中导线设置电流值与对应数据文件名

| 文件名 | 电流值（mA） | 文件名 | 电流值（mA） |
| ---- | ---- | ---- | ---- |
| f0.fits | 0 | f13.fits | -300 |
| f1.fits | +50 | f14.fits | -550 |
| f2.fits | +100 | f15.fits | -250 |
| f3.fits | -50 | f16.fits | +550 |
| f4.fits | -100 | f17.fits | +350 |
| f5.fits | -150 | f18.fits | +400 |
| f6.fits | +250 | f19.fits | -400 |
| f7.fits | +450 | f20.fits | -450 |
| f8.fits | +600 | f21.fits | -500 |
| f9.fits | -200 | f22.fits | +150 |
| f10.fits | -350 | f23.fits | +300 |
| f11.fits | +200 | f24.fits | -600 |
| f12.fits | +500 | | |

如需了解更多数据分析方法与研究结果，建议查阅原论文。