dc.contributor.author | Chalikkara, Farzeena | |
dc.contributor.author | Singha, Pradip | |
dc.contributor.author | Varanakkottu, Subramanyan Namboodiri | |
dc.date.accessioned | 2021-12-16T04:13:22Z | |
dc.date.available | 2021-12-16T04:13:22Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 0924-4247 | |
dc.identifier.doi | 10.1016/j.sna.2018.12.013 | |
dc.identifier.uri | http://hdl.handle.net/10072/410918 | |
dc.description.abstract | Optical systems based on fluid-fluid interface are gaining great attention because they offer added advantages such as dynamic, reconfigurable, and self-healing capabilities with less complex fabrication steps compared to the solid based optical elements. Moreover, cost-effectiveness and ease of miniaturization pave a potential route towards the realization of portable optical and optofluidic devices. However, a single optofluidic device having remotely controlled multifunctional capabilities remains a challenge. We demonstrate an optofluidic multifunctional strategy, which could operate either as an optical switch or a tunable liquid lens. The principle relies on light-controlled volumetric change of an air plug confined in a minichannel filled with water. For the optical switch, volumetric change of the air plug modulates total internal reflection. A temperature difference of only 0.2 °C is sufficient for a subsecond switching time (0.6 ± 0.1 s). For the liquid lens, the change of plug size acts as an actuator to control the meniscus shape of the liquid. Upon heating or cooling, the meniscus develops a convex or a concave lens respectively. A temperature difference of 0.1–0.7 °C is sufficient for realizing tunability in the focal length. The demonstrated strategy is simple, cost-effective, non-contact and the device could be operated at room temperature. | |
dc.description.peerreviewed | Yes | |
dc.language | English | |
dc.publisher | ELSEVIER SCIENCE SA | |
dc.relation.ispartofpagefrom | 659 | |
dc.relation.ispartofpageto | 665 | |
dc.relation.ispartofjournal | Sensors and Actuators A: Physical | |
dc.relation.ispartofvolume | 285 | |
dc.subject.fieldofresearch | Materials engineering | |
dc.subject.fieldofresearch | Mechanical engineering | |
dc.subject.fieldofresearchcode | 4016 | |
dc.subject.fieldofresearchcode | 4017 | |
dc.subject.keywords | Science & Technology | |
dc.subject.keywords | Technology | |
dc.subject.keywords | Engineering, Electrical & Electronic | |
dc.subject.keywords | Instruments & Instrumentation | |
dc.subject.keywords | Engineering | |
dc.title | Dual functional optofluidic platform based on light-actuated air plug | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dcterms.bibliographicCitation | Chalikkara, F; Singha, P; Varanakkottu, SN, Dual functional optofluidic platform based on light-actuated air plug, Sensors and Actuators A: Physical, 2019, 285, pp. 659-665 | |
dc.date.updated | 2021-12-16T04:12:15Z | |
gro.hasfulltext | No Full Text | |
gro.griffith.author | Singha, Pradip | |