{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T15:02:30Z","timestamp":1775228550916,"version":"3.50.1"},"reference-count":47,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2018,11,11]],"date-time":"2018-11-11T00:00:00Z","timestamp":1541894400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Key Basic Research Program of China","award":["2015CB352006"],"award-info":[{"award-number":["2015CB352006"]}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61705039, 61378080 and 61335011"],"award-info":[{"award-number":["61705039, 61378080 and 61335011"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002858","name":"China Postdoctoral Science Foundation","doi-asserted-by":"publisher","award":["2017M610389"],"award-info":[{"award-number":["2017M610389"]}],"id":[{"id":"10.13039\/501100002858","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Fujian Provincial Key Project of Natural Science Foundation for Young Scientists in University","award":["JZ160423"],"award-info":[{"award-number":["JZ160423"]}]},{"DOI":"10.13039\/501100018621","name":"Program for Changjiang Scholars and Innovative Research Team in University","doi-asserted-by":"publisher","award":["IRT_15R10"],"award-info":[{"award-number":["IRT_15R10"]}],"id":[{"id":"10.13039\/501100018621","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Special Funds of the Central Government Guiding Local Science and Technology Development","award":["2017L3009"],"award-info":[{"award-number":["2017L3009"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Liquid droplet and quasi-droplet whispering gallery mode (WGM) microcavities have been widely studied recently for the enhanced spatial overlap between the liquid and WGM field, especially in sensing applications. However, the fragile cavity structure and the evaporation of liquid limit its practical applications. Here, stable, packaged, quasi-droplet and droplet microcavities are proposed and fabricated for thermal sensing with high sensitivity. The sensitivity and electromagnetic field intensity distribution are analyzed by Mie theory, and a quantified definition of the quasi-droplet is presented for the first time to the best of our knowledge. By doping dye material directly into the liquid, lasing packaged droplet and quasi-droplet microcavity sensors with a high thermal sensitivity of up to 205.3 pm\/\u00b0C are experimentally demonstrated. The high sensitivity, facile fabrication, and mechanically robust properties of the optofluidic, packaged droplet microresonator make it a promising candidate for future integrated photonic devices.<\/jats:p>","DOI":"10.3390\/s18113881","type":"journal-article","created":{"date-parts":[[2018,11,14]],"date-time":"2018-11-14T10:58:22Z","timestamp":1542193102000},"page":"3881","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Packaged Droplet Microresonator for Thermal Sensing with High Sensitivity"],"prefix":"10.3390","volume":"18","author":[{"given":"Xiaogang","family":"Chen","sequence":"first","affiliation":[{"name":"Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou 350007, China"}]},{"given":"Liang","family":"Fu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou 350007, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7786-0437","authenticated-orcid":false,"given":"Qijing","family":"Lu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou 350007, China"}]},{"given":"Xiang","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China"}]},{"given":"Shusen","family":"Xie","sequence":"additional","affiliation":[{"name":"Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou 350007, China"}]}],"member":"1968","published-online":{"date-parts":[[2018,11,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"839","DOI":"10.1038\/nature01939","article-title":"Optical microcavities","volume":"424","author":"Vahala","year":"2003","journal-title":"Nature"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"66","DOI":"10.1063\/1.881356","article-title":"Optical processes in microcavities","volume":"46","author":"Slusher","year":"1993","journal-title":"Phys. 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