{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,14]],"date-time":"2025-10-14T00:45:29Z","timestamp":1760402729275,"version":"build-2065373602"},"reference-count":26,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2020,5,4]],"date-time":"2020-05-04T00:00:00Z","timestamp":1588550400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["JP18H04497,18H02041"],"award-info":[{"award-number":["JP18H04497,18H02041"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A temperature-sensitive paint (TSP) using a chameleon luminophore      [  Tb  0.99    Eu  0.01     ( hfa )  3   ( dpbp )  ]  n     is proposed. The chameleon luminophore was dispersed in isobutyl methacrylate polymer in a toluene solvent to fix it on a sample coupon. Temperature and pressure sensitivities of the chameleon luminophore-based TSP were measured using a spectrofluorophotometer. The emission for each wavelength was confirmed to be dependent on the temperature and pressure. The temperature and pressure sensitivities of the TSP were 0.81\u20132.8%\/K and 0.08\u20130.12%\/kPa, respectively. Higher temperature sensitivity can be obtained using the ratio of emissions from the two lanthanide ions,     Tb III     and     Eu III    . The temperature sensitivity when using the ratio of the emission intensities at 616 nm derived from     Eu III     and at 545 nm derived from     Tb III     was 3.2%\/K, which was the highest value in the present study. In addition, the pressure sensitivity for the case using the ratio of the emission intensities at 616 and 545 nm was     4.8 \u00d7  10  \u2212 2   %    \/kPa. Higher temperature sensitivity and lower pressure sensitivity than that with a single wavelength can be achieved using the ratio of the emission intensities at the two peak wavelengths derived from     Tb III     and     Eu III    .<\/jats:p>","DOI":"10.3390\/s20092623","type":"journal-article","created":{"date-parts":[[2020,5,4]],"date-time":"2020-05-04T14:00:43Z","timestamp":1588600843000},"page":"2623","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Characteristic Evaluation of Chameleon Luminophore Dispersed in Polymer"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4390-781X","authenticated-orcid":false,"given":"Miku","family":"Kasai","sequence":"first","affiliation":[{"name":"Department of Aerospace Engineering, Graduate School of Engineering, Tohoku University, 6-6-01 Aramakiaza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9428-4582","authenticated-orcid":false,"given":"Yosuke","family":"Sugioka","sequence":"additional","affiliation":[{"name":"Department of Aerospace Engineering, Graduate School of Engineering, Tohoku University, 6-6-01 Aramakiaza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masanori","family":"Yamamoto","sequence":"additional","affiliation":[{"name":"Graduate School of Chemical Sciences and Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo Hokkaido 060-8628, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3644-4888","authenticated-orcid":false,"given":"Takayuki","family":"Nagata","sequence":"additional","affiliation":[{"name":"Department of Aerospace Engineering, Graduate School of Engineering, Tohoku University, 6-6-01 Aramakiaza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7739-7104","authenticated-orcid":false,"given":"Taku","family":"Nonomura","sequence":"additional","affiliation":[{"name":"Department of Aerospace Engineering, Graduate School of Engineering, Tohoku University, 6-6-01 Aramakiaza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keisuke","family":"Asai","sequence":"additional","affiliation":[{"name":"Department of Aerospace Engineering, Graduate School of Engineering, Tohoku University, 6-6-01 Aramakiaza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6622-8011","authenticated-orcid":false,"given":"Yasuchika","family":"Hasegawa","sequence":"additional","affiliation":[{"name":"Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 001-0021, Japan"},{"name":"Faculty of Engineering, Hokkaido University, Kita-13, Nishi-8, Sapporo, Hokkaido 060-8628, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,5,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"605","DOI":"10.2514\/3.714","article-title":"Heat transfer measurement on a waverider at Mach 10 using fluorescent paint","volume":"9","author":"Liu","year":"1995","journal-title":"J. Thermophys. Heat Transf."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"373","DOI":"10.2514\/1.34152","article-title":"Effect of temperature-sensitive-paint thickness on global heat transfer measurement in hypersonic flow","volume":"22","author":"Nagai","year":"2008","journal-title":"J. Thermophys. Heat Transf."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"256","DOI":"10.2514\/1.39926","article-title":"Global temperature-sensitive paint system for heat transfer measurements in long-duration hypersonic flows","volume":"23","author":"Kurits","year":"2009","journal-title":"J. Thermophys. Heat Transf."},{"key":"ref_4","unstructured":"Fuata, J. (2014). Quantifying the eFfects of Convective Aerodynamic Heating Over a Double Swept-Wedge Configuration at Mach 6, University of Southern Queensland."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"355","DOI":"10.1016\/S1270-9638(02)01172-0","article-title":"An overview of infrared thermography techniques used in large wind tunnels","volume":"6","author":"Marchand","year":"2002","journal-title":"Aerosp. Sci. Technol."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1007\/BF00261322","article-title":"Flow visualization of a recirculating flow by rheoscopic liquid and liquid crystal techniques","volume":"2","author":"Rhee","year":"1984","journal-title":"Exp. Fluids"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"227","DOI":"10.1007\/BF00190671","article-title":"Automatic liquid crystal thermography for transient heat transfer measurements in hypersonic flow","volume":"21","author":"Babinsky","year":"1996","journal-title":"Exp. Fluids"},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Aleksic, J., Zielke, P., and Szymczyk, J.A. (2002). Temperature and Flow Visualization In A Simulation Of The Czochralski Process Using Temperature-Sensitive Liquid Crystals (TLCS). Ann. N. Y. Acad. Sci.","DOI":"10.1111\/j.1749-6632.2002.tb04567.x"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"969","DOI":"10.1088\/0957-0233\/11\/7\/313","article-title":"Liquid crystal measurements of heat transfer and surface shear stress","volume":"11","author":"Ireland","year":"2000","journal-title":"Meas. Sci. Technol."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1146\/annurev.fluid.33.1.155","article-title":"Surface pressure measurements using luminescent coatings","volume":"33","author":"Bell","year":"2001","journal-title":"Annu. Rev. Fluid Mech."},{"key":"ref_11","unstructured":"Liu, T., and Sullivan, J.P. (2005). Pressure and Temperature Sensitive Paints, Springer."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"85","DOI":"10.2514\/1.43372","article-title":"Analytical method for determining heat flux from temperature-sensitive-paint measurements in hypersonic tunnels","volume":"24","author":"Liu","year":"2010","journal-title":"J. Thermophys. Heat Transf."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"188","DOI":"10.1007\/s00348-016-2280-z","article-title":"Simultaneous PSP and TSP measurements of transient flow in a long-duration hypersonic tunnel","volume":"57","author":"Peng","year":"2016","journal-title":"Exp. Fluids"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1007\/s00348-017-2393-z","article-title":"Determination of heat transfer into a wedge model in a hypersonic flow using temperature-sensitive paint","volume":"58","author":"Risius","year":"2017","journal-title":"Exp. Fluids"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"34","DOI":"10.2514\/2.2132","article-title":"Boundary-layer transition detection in a cryogenic wind tunnel using luminescent paint","volume":"34","author":"Asai","year":"1997","journal-title":"J. Aircr."},{"key":"ref_16","unstructured":"Fey, U., and Egami, Y. (2007). Transition detection by temperature-sensitive paint. Springer Handbook of Experimental Fluid Mechanics, Springer."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"115301","DOI":"10.1088\/0957-0233\/23\/11\/115301","article-title":"Development of new two-component temperature-sensitive paint (TSP) for cryogenic testing","volume":"23","author":"Egami","year":"2012","journal-title":"Meas. Sci. Technol."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1671","DOI":"10.1007\/s00348-014-1671-2","article-title":"Single-shot temperature-and pressure-sensitive paint measurements on an unsteady helicopter blade","volume":"55","author":"Disotell","year":"2014","journal-title":"Exp. Fluids"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1007\/s00348-017-2416-9","article-title":"Single-shot lifetime-based PSP and TSP measurements on turbocharger compressor blades","volume":"58","author":"Peng","year":"2017","journal-title":"Exp. Fluids"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"9898","DOI":"10.1021\/ja016153j","article-title":"A dual fluorescence temperature sensor based on perylene\/exciplex interconversion","volume":"123","author":"Chandrasekharan","year":"2001","journal-title":"J. Am. Chem. Soc."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"479","DOI":"10.1007\/s10895-008-0435-x","article-title":"Fabrication of a bi-luminophore temperature sensitive coating by embedding europium thenoyltrifluoroacetonate (EuTTA) and perylene in polystyrene","volume":"19","author":"Basu","year":"2009","journal-title":"J. Fluoresc."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"6413","DOI":"10.1002\/anie.201301448","article-title":"Chameleon luminophore for sensing temperatures: Control of metal-to-metal and energy back transfer in lanthanide coordination polymers","volume":"52","author":"Miyata","year":"2013","journal-title":"Angew. Chem. Int. Ed."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"423","DOI":"10.1039\/C6SC03006H","article-title":"Organic linkers control the thermosensitivity of the emission intensities from Tb (III) and Eu (III) in a chameleon polymer","volume":"8","author":"Hatanaka","year":"2017","journal-title":"Chem. Sci."},{"key":"ref_24","unstructured":"Hirai, Y. (2017). Study on Assembled Structures and Physical Properties of Luminescent Lanthanide (III) Complexes. [Ph.D. Thesis, Hokkaido University]."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"677","DOI":"10.1016\/j.snb.2014.01.091","article-title":"Property changes of temperature-sensitive paint immobilized in acrylic polymer matrices","volume":"195","author":"Egami","year":"2014","journal-title":"Sens. Actuators B Chem."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"434","DOI":"10.1016\/j.sna.2015.07.023","article-title":"Europium 1, 3-di (thienyl) propane-1, 3-diones with outstanding properties for temperature sensing","volume":"233","author":"Ondrus","year":"2015","journal-title":"Sens. Actuators A Phys."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/9\/2623\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,13]],"date-time":"2025-10-13T13:52:29Z","timestamp":1760363549000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/9\/2623"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,5,4]]},"references-count":26,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2020,5]]}},"alternative-id":["s20092623"],"URL":"https:\/\/doi.org\/10.3390\/s20092623","relation":{},"ISSN":["1424-8220"],"issn-type":[{"type":"electronic","value":"1424-8220"}],"subject":[],"published":{"date-parts":[[2020,5,4]]}}}