Two-Photon Excitation of Silicon-Vacancy Centers in Nanodiamonds for All-Optical Thermometry with a Noise Floor of 6.6 mKmiddotHz-1/2

Zhang, Jiahua1; He, Hongsen1; Zhang, Tongtong1; Wang, Lingzhi1; Gupta, Madhav1; Jing, Jixiang1; Wang, Zhongqiang2; Wang, Qi2; Li, Kwai Hei3; Wong, Kenneth Kin-Yip1,4; Chu, Zhiqin1,5

2023

10.1021/acs.jpcc.2c06966

Journal of Physical Chemistry C   Impact Factor & Quartile

1932-7447

1932-7455

In this paper, we introduce ultrasensitive all-optical nanothermometry using high figure-of-merit nanodiamonds with silicon-vacancy (SiV) centers. In contrast to the commonly used single-photon process, we have adopted a two-photon approach to achieve efficient excitation of SiV centers in nanodiamonds. Based on the developed intensity-projected scheme, we have experimentally achieved a noise floor of 6.6 mK center dot Hz-1/2 using nanodiamonds. This serves as a new record of temperature resolution in the relevant field. Particularly, this simplified method allows us to reflect the temperature-induced spectral shift without wavelength scanning via a spectrometer. Furthermore, we demonstrate that the two-photon excitation of SiV centers has been thermally activated, as indicated by an elevated fluorescence intensity accompanied by a temperature increase. Our findings offer an opportunity for harnessing SiV-based nanothermometry in an easy-to-use manner and open the road for the development of practical applications in complicated environments such as living cells.

SCI

English

Others

Hong Kong SAR Research Grants Council (RGC) Early Career Scheme[27202919] ; Hong Kong SAR RGC Research Matching Grant Scheme[207300313] ; Hong Kong SAR Innovation and Technology Fund (ITF) through the Platform Projects of the Innovation and Technology Support Program (ITSP)[ITS/293/19FP] ; Hong Kong SAR RGC["HKU 17210522","HKU C7074-21G","HKU 17205321","HKU 17200219","HKU 17209018","CityU T42-103/16-N"] ; Guangdong Basic and Applied Basic Research Foundation["2019B1515120081","2019B1515120091","2020B1515120020"]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000934868200001

AMER CHEMICAL SOC

Web of Science

1.Univ Hong Kong, Elect & Elect Engn, Hong Kong 999077, Peoples R China
2.Peking Univ, Dongguan Inst Optoelect, Shenzhen 523808, Guangdong, Peoples R China
3.Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China
4.Adv Biomed Instrumentat Ctr, Shatin, Hong Kong Sci Pk, Hong Kong 999077, Peoples R China
5.Univ Hong Kong, Sch Biomed Sci, Hong Kong 999077, Peoples R China

Zhang, Jiahua,He, Hongsen,Zhang, Tongtong,et al. Two-Photon Excitation of Silicon-Vacancy Centers in Nanodiamonds for All-Optical Thermometry with a Noise Floor of 6.6 mKmiddotHz-1/2[J]. Journal of Physical Chemistry C,2023.

Zhang, Jiahua.,He, Hongsen.,Zhang, Tongtong.,Wang, Lingzhi.,Gupta, Madhav.,...&Chu, Zhiqin.(2023).Two-Photon Excitation of Silicon-Vacancy Centers in Nanodiamonds for All-Optical Thermometry with a Noise Floor of 6.6 mKmiddotHz-1/2.Journal of Physical Chemistry C.

Zhang, Jiahua,et al."Two-Photon Excitation of Silicon-Vacancy Centers in Nanodiamonds for All-Optical Thermometry with a Noise Floor of 6.6 mKmiddotHz-1/2".Journal of Physical Chemistry C (2023).