{"data":{"id":"10.6084/m9.figshare.c.4012702","type":"dois","attributes":{"doi":"10.6084/m9.figshare.c.4012702","prefix":"10.6084","suffix":"m9.figshare.c.4012702","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Thompson, Alex","nameType":"Personal","givenName":"Alex","familyName":"Thompson","affiliation":[],"nameIdentifiers":[]},{"name":"Power, Maura","nameType":"Personal","givenName":"Maura","familyName":"Power","affiliation":[],"nameIdentifiers":[]},{"name":"Yang, Guang-Zhong","nameType":"Personal","givenName":"Guang-Zhong","familyName":"Yang","affiliation":[],"nameIdentifiers":[]}],"titles":[{"title":"A micro-scale fiber-optic force sensor fabricated using direct laser writing"}],"publisher":"Figshare","container":{},"publicationYear":2018,"subjects":[{"subject":"90606 Photonics and Electro-Optical Engineering (excl. Communications)","subjectScheme":"FOR"},{"subject":"FOS: Electrical engineering, electronic engineering, information engineering","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"91009 Microtechnology","subjectScheme":"FOR"},{"subject":"Additive Manufacturing"},{"subject":"90303 Biomedical Instrumentation","subjectScheme":"FOR"},{"subject":"FOS: Medical engineering","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"}],"contributors":[],"dates":[{"date":"2018-02-22","dateType":"Created"},{"date":"2018-05-18","dateType":"Updated"},{"date":"2018","dateType":"Issued"}],"language":null,"types":{"ris":"GEN","bibtex":"misc","citeproc":"article","schemaOrg":"Collection","resourceType":"Collection","resourceTypeGeneral":"Collection"},"relatedIdentifiers":[{"relationType":"IsSupplementTo","relatedIdentifier":"10.1364/oe.26.014186","relatedIdentifierType":"DOI"}],"relatedItems":[],"sizes":[],"formats":[],"version":null,"rightsList":[{"rights":"CC BY 4.0","rightsUri":"https://creativecommons.org/licenses/by/4.0"}],"descriptions":[{"description":"Fiber-optic sensors have numerous existing and emerging applications spanning areas from industrial process monitoring to medical diagnosis. Two of the most common fiber sensors are based on the fabrication of Bragg gratings or Fabry-Perot etalons. While these techniques offer a large array of sensing targets, their utility can be limited by the difficulties involved in fabricating forward viewing probes (Bragg gratings) and in obtaining sufficient signal-to-noise ratios (Fabry-Perot systems). In this article we present a microscale fiber-optic force sensor produced using direct laser writing (DLW). The fabrication entails a single-step process that can be undertaken in a reliable and repeatable manner using a commercial DLW system. The sensor is made of a series of thin plates (i.e. Fabry-Perot etalons), which are supported by springs that compress under an applied force. At the proximal end of the fiber, the interferometric changes that are induced as the sensor is compressed are read out using reflectance spectroscopy, and the resulting spectral changes are calibrated with respect to applied force. We describe the design and optimization of this device, with a particular focus on the data analysis required. Finally, we demonstrate proof-of-concept force sensing over the range 0-50 μN, with a measurement error of approximately 1.5 μN.","descriptionType":"Abstract"}],"geoLocations":[],"fundingReferences":[],"xml":"PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPHJlc291cmNlIHhtbG5zOnhzaT0iaHR0cDovL3d3dy53My5vcmcvMjAwMS9YTUxTY2hlbWEtaW5zdGFuY2UiIHhtbG5zPSJodHRwOi8vZGF0YWNpdGUub3JnL3NjaGVtYS9rZXJuZWwtNCIgeHNpOnNjaGVtYUxvY2F0aW9uPSJodHRwOi8vZGF0YWNpdGUub3JnL3NjaGVtYS9rZXJuZWwtNCBodHRwOi8vc2NoZW1hLmRhdGFjaXRlLm9yZy9tZXRhL2tlcm5lbC00L21ldGFkYXRhLnhzZCI+CiAgPGlkZW50aWZpZXIgaWRlbnRpZmllclR5cGU9IkRPSSI+MTAuNjA4NC9NOS5GSUdTSEFSRS5DLjQwMTI3MDI8L2lkZW50aWZpZXI+CiAgPGNyZWF0b3JzPgogICAgPGNyZWF0b3I+CiAgICAgIDxjcmVhdG9yTmFtZSBuYW1lVHlwZT0iUGVyc29uYWwiPlRob21wc29uLCBBbGV4PC9jcmVhdG9yTmFtZT4KICAgICAgPGdpdmVuTmFtZT5BbGV4PC9naXZlbk5hbWU+CiAgICAgIDxmYW1pbHlOYW1lPlRob21wc29uPC9mYW1pbHlOYW1lPgogICAgPC9jcmVhdG9yPgogICAgPGNyZWF0b3I+CiAgICAgIDxjcmVhdG9yTmFtZSBuYW1lVHlwZT0iUGVyc29uYWwiPlBvd2VyLCBNYXVyYTwvY3JlYXRvck5hbWU+CiAgICAgIDxnaXZlbk5hbWU+TWF1cmE8L2dpdmVuTmFtZT4KICAgICAgPGZhbWlseU5hbWU+UG93ZXI8L2ZhbWlseU5hbWU+CiAgICA8L2NyZWF0b3I+CiAgICA8Y3JlYXRvcj4KICAgICAgPGNyZWF0b3JOYW1lIG5hbWVUeXBlPSJQZXJzb25hbCI+WWFuZywgR3VhbmctWmhvbmc8L2NyZWF0b3JOYW1lPgogICAgICA8Z2l2ZW5OYW1lPkd1YW5nLVpob25nPC9naXZlbk5hbWU+CiAgICAgIDxmYW1pbHlOYW1lPllhbmc8L2ZhbWlseU5hbWU+CiAgICA8L2NyZWF0b3I+CiAgPC9jcmVhdG9ycz4KICA8dGl0bGVzPgogICAgPHRpdGxlPkEgbWljcm8tc2NhbGUgZmliZXItb3B0aWMgZm9yY2Ugc2Vuc29yIGZhYnJpY2F0ZWQgdXNpbmcgZGlyZWN0IGxhc2VyIHdyaXRpbmc8L3RpdGxlPgogIDwvdGl0bGVzPgogIDxwdWJsaXNoZXI+Rmlnc2hhcmU8L3B1Ymxpc2hlcj4KICA8cHVibGljYXRpb25ZZWFyPjIwMTg8L3B1YmxpY2F0aW9uWWVhcj4KICA8cmVzb3VyY2VUeXBlIHJlc291cmNlVHlwZUdlbmVyYWw9IkNvbGxlY3Rpb24iPkNvbGxlY3Rpb248L3Jlc291cmNlVHlwZT4KICA8c3ViamVjdHM+CiAgICA8c3ViamVjdCBzdWJqZWN0U2NoZW1lPSJGT1IiPjkwNjA2IFBob3RvbmljcyBhbmQgRWxlY3Ryby1PcHRpY2FsIEVuZ2luZWVyaW5nIChleGNsLiBDb21tdW5pY2F0aW9ucyk8L3N1YmplY3Q+CiAgICA8c3ViamVjdCBzdWJqZWN0U2NoZW1lPSJGaWVsZHMgb2YgU2NpZW5jZSBhbmQgVGVjaG5vbG9neSAoRk9TKSIgc2NoZW1lVVJJPSJodHRwOi8vd3d3Lm9lY2Qub3JnL3NjaWVuY2UvaW5uby8zODIzNTE0Ny5wZGYiPkZPUzogRWxlY3RyaWNhbCBlbmdpbmVlcmluZywgZWxlY3Ryb25pYyBlbmdpbmVlcmluZywgaW5mb3JtYXRpb24gZW5naW5lZXJpbmc8L3N1YmplY3Q+CiAgICA8c3ViamVjdCBzdWJqZWN0U2NoZW1lPSJGT1IiPjkxMDA5IE1pY3JvdGVjaG5vbG9neTwvc3ViamVjdD4KICAgIDxzdWJqZWN0PkFkZGl0aXZlIE1hbnVmYWN0dXJpbmc8L3N1YmplY3Q+CiAgICA8c3ViamVjdCBzdWJqZWN0U2NoZW1lPSJGT1IiPjkwMzAzIEJpb21lZGljYWwgSW5zdHJ1bWVudGF0aW9uPC9zdWJqZWN0PgogICAgPHN1YmplY3Qgc3ViamVjdFNjaGVtZT0iRmllbGRzIG9mIFNjaWVuY2UgYW5kIFRlY2hub2xvZ3kgKEZPUykiIHNjaGVtZVVSST0iaHR0cDovL3d3dy5vZWNkLm9yZy9zY2llbmNlL2lubm8vMzgyMzUxNDcucGRmIj5GT1M6IE1lZGljYWwgZW5naW5lZXJpbmc8L3N1YmplY3Q+CiAgPC9zdWJqZWN0cz4KICA8ZGF0ZXM+CiAgICA8ZGF0ZSBkYXRlVHlwZT0iQ3JlYXRlZCI+MjAxOC0wMi0yMjwvZGF0ZT4KICAgIDxkYXRlIGRhdGVUeXBlPSJVcGRhdGVkIj4yMDE4LTA1LTE4PC9kYXRlPgogICAgPGRhdGUgZGF0ZVR5cGU9Iklzc3VlZCI+MjAxODwvZGF0ZT4KICA8L2RhdGVzPgogIDxyZWxhdGVkSWRlbnRpZmllcnM+CiAgICA8cmVsYXRlZElkZW50aWZpZXIgcmVsYXRlZElkZW50aWZpZXJUeXBlPSJET0kiIHJlbGF0aW9uVHlwZT0iSXNTdXBwbGVtZW50VG8iPjEwLjEzNjQvb2UuMjYuMDE0MTg2PC9yZWxhdGVkSWRlbnRpZmllcj4KICA8L3JlbGF0ZWRJZGVudGlmaWVycz4KICA8c2l6ZXMvPgogIDxmb3JtYXRzLz4KICA8dmVyc2lvbi8+CiAgPHJpZ2h0c0xpc3Q+CiAgICA8cmlnaHRzIHJpZ2h0c1VSST0iaHR0cHM6Ly9jcmVhdGl2ZWNvbW1vbnMub3JnL2xpY2Vuc2VzL2J5LzQuMCI+Q0MgQlkgNC4wPC9yaWdodHM+CiAgPC9yaWdodHNMaXN0PgogIDxkZXNjcmlwdGlvbnM+CiAgICA8ZGVzY3JpcHRpb24gZGVzY3JpcHRpb25UeXBlPSJBYnN0cmFjdCI+RmliZXItb3B0aWMgc2Vuc29ycyBoYXZlIG51bWVyb3VzIGV4aXN0aW5nIGFuZCBlbWVyZ2luZyBhcHBsaWNhdGlvbnMgc3Bhbm5pbmcgYXJlYXMgZnJvbSBpbmR1c3RyaWFsIHByb2Nlc3MgbW9uaXRvcmluZyB0byBtZWRpY2FsIGRpYWdub3Npcy4gVHdvIG9mIHRoZSBtb3N0IGNvbW1vbiBmaWJlciBzZW5zb3JzIGFyZSBiYXNlZCBvbiB0aGUgZmFicmljYXRpb24gb2YgQnJhZ2cgZ3JhdGluZ3Mgb3IgRmFicnktUGVyb3QgZXRhbG9ucy4gV2hpbGUgdGhlc2UgdGVjaG5pcXVlcyBvZmZlciBhIGxhcmdlIGFycmF5IG9mIHNlbnNpbmcgdGFyZ2V0cywgdGhlaXIgdXRpbGl0eSBjYW4gYmUgbGltaXRlZCBieSB0aGUgZGlmZmljdWx0aWVzIGludm9sdmVkIGluIGZhYnJpY2F0aW5nIGZvcndhcmQgdmlld2luZyBwcm9iZXMgKEJyYWdnIGdyYXRpbmdzKSBhbmQgaW4gb2J0YWluaW5nIHN1ZmZpY2llbnQgc2lnbmFsLXRvLW5vaXNlIHJhdGlvcyAoRmFicnktUGVyb3Qgc3lzdGVtcykuIEluIHRoaXMgYXJ0aWNsZSB3ZSBwcmVzZW50IGEgbWljcm9zY2FsZSBmaWJlci1vcHRpYyBmb3JjZSBzZW5zb3IgcHJvZHVjZWQgdXNpbmcgZGlyZWN0IGxhc2VyIHdyaXRpbmcgKERMVykuIFRoZSBmYWJyaWNhdGlvbiBlbnRhaWxzIGEgc2luZ2xlLXN0ZXAgcHJvY2VzcyB0aGF0IGNhbiBiZSB1bmRlcnRha2VuIGluIGEgcmVsaWFibGUgYW5kIHJlcGVhdGFibGUgbWFubmVyIHVzaW5nIGEgY29tbWVyY2lhbCBETFcgc3lzdGVtLiBUaGUgc2Vuc29yIGlzIG1hZGUgb2YgYSBzZXJpZXMgb2YgdGhpbiBwbGF0ZXMgKGkuZS4gRmFicnktUGVyb3QgZXRhbG9ucyksIHdoaWNoIGFyZSBzdXBwb3J0ZWQgYnkgc3ByaW5ncyB0aGF0IGNvbXByZXNzIHVuZGVyIGFuIGFwcGxpZWQgZm9yY2UuIEF0IHRoZSBwcm94aW1hbCBlbmQgb2YgdGhlIGZpYmVyLCB0aGUgaW50ZXJmZXJvbWV0cmljIGNoYW5nZXMgdGhhdCBhcmUgaW5kdWNlZCBhcyB0aGUgc2Vuc29yIGlzIGNvbXByZXNzZWQgYXJlIHJlYWQgb3V0IHVzaW5nIHJlZmxlY3RhbmNlIHNwZWN0cm9zY29weSwgYW5kIHRoZSByZXN1bHRpbmcgc3BlY3RyYWwgY2hhbmdlcyBhcmUgY2FsaWJyYXRlZCB3aXRoIHJlc3BlY3QgdG8gYXBwbGllZCBmb3JjZS4gV2UgZGVzY3JpYmUgdGhlIGRlc2lnbiBhbmQgb3B0aW1pemF0aW9uIG9mIHRoaXMgZGV2aWNlLCB3aXRoIGEgcGFydGljdWxhciBmb2N1cyBvbiB0aGUgZGF0YSBhbmFseXNpcyByZXF1aXJlZC4gRmluYWxseSwgd2UgZGVtb25zdHJhdGUgcHJvb2Ytb2YtY29uY2VwdCBmb3JjZSBzZW5zaW5nIG92ZXIgdGhlIHJh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