Details
| Original language | English |
|---|---|
| Article number | 6048 |
| Pages (from-to) | 1-13 |
| Number of pages | 13 |
| Journal | Sensors (Switzerland) |
| Volume | 20 |
| Issue number | 21 |
| Publication status | Published - 24 Oct 2020 |
Abstract
In recent years, lanthanide-doped nanothermometers have been mainly used in thin films or dispersed in organic solvents. However, both approaches have disadvantages such as the short interaction lengths of the active material with the pump beam or complicated handling, which can directly affect the achievable temperature resolution. We investigated the usability of a polymer fiber doped with upconversion nanocrystals as a thermometer. The fiber was excited with a wavelength stabilized diode laser at a wavelength of 976 nm. Emission spectra were recorded in a temperature range from 10 to 35◦C and the thermal emission changes were measured. Additionally, the pump power was varied to study the effect of self-induced heating on the thermometer specifications. Our fiber sensor shows a maximal thermal sensitivity of 1.45%/K and the minimal thermal resolution is below 20 mK. These results demonstrate that polymer fibers doped with nanocrystals constitute an attractive alternative to conventional fluorescence thermometers, as they add a long pump interaction length while also being insensitive to strong electrical fields or inert to bio-chemical environments.
Keywords
- Optical thermometer, Polymer fiber, Upconversion nanocrystals
ASJC Scopus subject areas
- Chemistry(all)
- Analytical Chemistry
- Computer Science(all)
- Information Systems
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Physics and Astronomy(all)
- Instrumentation
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Sensors (Switzerland), Vol. 20, No. 21, 6048, 24.10.2020, p. 1-13.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Upconversion Nanocrystal Doped Polymer Fiber Thermometer
AU - Thiem, Jonas
AU - Spelthann, Simon
AU - Neumann, Laurie
AU - Jakobs, Florian
AU - Johannes, Hans Hermann
AU - Kowalsky, Wolfgang
AU - Kracht, Dietmar
AU - Neumann, Joerg
AU - Ruehl, Axel
AU - Ristau, Detlev
N1 - Funding Information: Acknowledgments: The publication of this article was funded by the Open Access Fund of the Leibniz Universität Hannover. Funding Information: Funding: We gratefully acknowledge the state of Lower Saxony and the European Union for funding the LaPOF research network (EFRE-SER 2014-2020, 85003655 and 85003502). Collaborations of the involved institutions are also funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453) and by Lower Saxony through “Quanten-und Nanometrologie” (QUANOMET).
PY - 2020/10/24
Y1 - 2020/10/24
N2 - In recent years, lanthanide-doped nanothermometers have been mainly used in thin films or dispersed in organic solvents. However, both approaches have disadvantages such as the short interaction lengths of the active material with the pump beam or complicated handling, which can directly affect the achievable temperature resolution. We investigated the usability of a polymer fiber doped with upconversion nanocrystals as a thermometer. The fiber was excited with a wavelength stabilized diode laser at a wavelength of 976 nm. Emission spectra were recorded in a temperature range from 10 to 35◦C and the thermal emission changes were measured. Additionally, the pump power was varied to study the effect of self-induced heating on the thermometer specifications. Our fiber sensor shows a maximal thermal sensitivity of 1.45%/K and the minimal thermal resolution is below 20 mK. These results demonstrate that polymer fibers doped with nanocrystals constitute an attractive alternative to conventional fluorescence thermometers, as they add a long pump interaction length while also being insensitive to strong electrical fields or inert to bio-chemical environments.
AB - In recent years, lanthanide-doped nanothermometers have been mainly used in thin films or dispersed in organic solvents. However, both approaches have disadvantages such as the short interaction lengths of the active material with the pump beam or complicated handling, which can directly affect the achievable temperature resolution. We investigated the usability of a polymer fiber doped with upconversion nanocrystals as a thermometer. The fiber was excited with a wavelength stabilized diode laser at a wavelength of 976 nm. Emission spectra were recorded in a temperature range from 10 to 35◦C and the thermal emission changes were measured. Additionally, the pump power was varied to study the effect of self-induced heating on the thermometer specifications. Our fiber sensor shows a maximal thermal sensitivity of 1.45%/K and the minimal thermal resolution is below 20 mK. These results demonstrate that polymer fibers doped with nanocrystals constitute an attractive alternative to conventional fluorescence thermometers, as they add a long pump interaction length while also being insensitive to strong electrical fields or inert to bio-chemical environments.
KW - Optical thermometer
KW - Polymer fiber
KW - Upconversion nanocrystals
UR - http://www.scopus.com/inward/record.url?scp=85094097443&partnerID=8YFLogxK
U2 - 10.3390/s20216048
DO - 10.3390/s20216048
M3 - Article
C2 - 33114281
AN - SCOPUS:85094097443
VL - 20
SP - 1
EP - 13
JO - Sensors (Switzerland)
JF - Sensors (Switzerland)
SN - 1424-8220
IS - 21
M1 - 6048
ER -