Simple and compact optode for real-time in-situ temperature detection in very small samples

Feng Long; Hanchang Shi
May 2014
Scientific Reports;5/30/2014, p1
Academic Journal
Real-time in-situ temperature detection is essential in many applications. In this paper, a simple and robust optode, which uses Ruthenium (II) complex as a temperature indicator, has been developed for rapid and sensitive temperature detection in small volume samples (<5 μL). Transmission of excitation light and collection and transmission of fluorescence are performed by a homemade single-multi mode fiber coupler, which provides the entire system with a simple and robust structure. The photoluminescence intensity of Ruthenium (II) complex diminishes monotonically from 0°C to 80°C, and the response to temperature is rapid and completely reversible. When temperature is less than (or higher than) 50°C, a linear correlation exists between the fluorescence intensity and the temperature. Excellent agreement was also observed between the continuous and in situ measurements obtained by the presented optode and the discrete temperature values measured by a conventional thermometer. The proposed optode has high sensitivity, high photostability and chemical stability, a wide detection range, and thermal reversibility, and can be applied to real-time in-situ temperature detection of a very small volume biological, environmental, and chemical sample.


Related Articles

  • Surface thermometry by laser-induced fluorescence. Goss, L. P.; Smith, A. A.; Post, M. E. // Review of Scientific Instruments;Dec1989, Vol. 60 Issue 12, p3702 

    A novel laser-induced fluorescence technique has been developed for measuring the surface temperature of reacting and nonreacting materials. The technique involves seeding the material to be examined with a temperature-sensitive phosphor (Dy:YAG) and monitoring the laserinduced fluorescence of...

  • Fiber optic thermometry based on Cr-fluorescence in olivine crystals. Fernicola, V.C.; Zhang, Z.Y.; Grattan, K.T.V. // Review of Scientific Instruments;Jun97, Vol. 68 Issue 6, p2418 

    Investigates the use of two crystals of the olivine family in optical fiber fluorescence thermometry. Dominance of Cr[sup3+]-based emission in the near-infrared under pumping with light from a red diode laser; Useful sensor performance in the region around room temperature; Temperature probes...

  • Fluorescence referencing for fiber-optic thermometers using visible wavelengths. Grattan, K. T. V.; Selli, R. K.; Palmer, A. W. // Review of Scientific Instruments;Feb1988, Vol. 59 Issue 2, p256 

    A fiber-optic temperature sensor, operating on the principle of differential absorption effects with temperature, has been constructed using visible wavelength sensing and a ruby fluorescence-based internally generated reference scheme. Results of an investigation of the system and a comparison...

  • Advanced Thermocouples and Fiber-Optic Sensors. Lieske, Don // Foundry Management & Technology;Jan2010, Vol. 138 Issue 1, p28 

    The article looks at the application of fiber-optic sensors and thermocouples in measuring temperature in foundries. The equipment are vitally needed in detecting temperature levels in sheath materials in an accurate manner. Thermocouples are two-way junction thermometers wherein fixed lower...

  • Advancing optical thermometers.  // R&D Magazine;May2004, Vol. 46 Issue 5, p10 

    Focuses on a fluorescent material synthesized by researchers at the University of California that could serve as a medium for optical thermometers. Information on the fluorescent material; Accuracy of the optical thermometer in measuring temperature; Potentials of the thermometer.

  • Excitation power dependence of photoluminescence spectra of GaSb type-II quantum dots in GaAs grown by droplet epitaxy. Kawazu, T.; Noda, T.; Sakuma, Y.; Sakaki, H. // AIP Advances;2016, Vol. 6 Issue 4, p1 

    We investigated the excitation power P dependence of photoluminescence (PL) spectra of GaSb type-II quantum dots (QDs) in GaAs grown by droplet epitaxy. We prepared two QD samples annealed at slightly different temperatures (380 °C and 400 °C) and carried out PL measurements. The 20 °C...

  • Effects of two-dimensional confinement on the optical properties of InGaAs/InP quantum wire structures. Gershoni, D.; Temkin, H.; Dolan, G. J.; Dunsmuir, J.; Chu, S. N. G.; Panish, M. B. // Applied Physics Letters;9/12/1988, Vol. 53 Issue 11, p995 

    We describe fabrication and photoluminescence excitation of InGaAs/InP quantum wires with a lateral dimension of ∼350 Å. Transverse confinement results in the splitting of the n = 1 heavy hole-electron transition. Three of these levels are observed in the excitation spectrums The...

  • Study of the broad luminescence bands in Ge-implanted GaAs centered at 1.44–1.46 eV. Keefer, K. J.; Yeo, Y. K.; Hengehold, R. L. // Journal of Applied Physics;10/15/1991, Vol. 70 Issue 8, p4634 

    Provides information on a study which examined above- and below-band-gap excitation photoluminescence studies performed on GaAs samples implanted. Advantage of below-band-gap excitation; Practices that indicate the main contribution to the broad band observed in Ge-implanted GaAs; Function of...

  • Nanometer-resolution scanning optical microscope with resonance excitation of the fluorescence of the samples from a single-atom excited center. Sekatskii, S. K.; Letokhov, V. S. // JETP Letters;3/10/96, Vol. 63 Issue 5, p319 

    A scanning optical microscope whose active element (the tip) consists of a crystal containing impurity ions or color centers, which are excited by laser radiation, is proposed. The excitation energy from a single impurity center located at the point of the tip is transferred to the fluorescence...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics