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1篇 您的检索式:作者名="Amit Finkler"
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1Ultra-sensitive hybrid diamond nanothermometer显示文摘Nitrogen-vacancy(NV)centers in diamond are promising quantum sensors because of their long spin coherence time under ambient conditions.However,their spin resonances are relatively insensitive to non-magnetic parameters such as temperature.A magnetic-nanoparticle-nanodiamond hybrid thermometer,where the temperature change is converted to the magnetic field variation near the Curie temperature,were demonstrated to have enhanced temperature sensitivity(11 m K Hz-1/2)(Wang N,Liu G-Q and Leong W-H et al.Phys Rev X 2018;8:011042),but the sensitivity was limited by the large spectral broadening of ensemble spins in nanodiamonds.To overcome this limitation,here we show an improved design of a hybrid nanothermometer using a single NV center in a diamond nanopillar coupled with a single magnetic nanoparticle of copper-nickel alloy,and demonstrate a temperature sensitivity of 76μK Hz-1/2.This hybrid design enables detection of 2 m K temperature changes with temporal resolution of 5 ms.The ultra-sensitive nanothermometer offers a new tool to investigate thermal processes in nanoscale systems.Chu-Feng Liu Weng-Hang Leong Kangwei Xia Xi Feng Amit Finkler Andrej Denisenko Jorg Wrachtrup Quan Li Ren-Bao Liu 2021National Science Review2021,8,5:1
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