Integrated luminescent chemical microsensors based on GaN LEDs for security applications using smartphones

Orella Moraleda, Guillermo; Muñoz Merino, Elias; Gil Herrera, Luz K.; Muñoz Galindo, Pablo; López Gejo, Juan y Palacio Orcajo, Carlos (2012). Integrated luminescent chemical microsensors based on GaN LEDs for security applications using smartphones. En: "Proceedings of SPIE. Optical Materials and Biomaterials in Security and Defence Systems Technology IX", 24/09/2012, Edinburgh, United Kingdom.

Descripción

Título: Integrated luminescent chemical microsensors based on GaN LEDs for security applications using smartphones
Autor/es:
  • Orella Moraleda, Guillermo
  • Muñoz Merino, Elias
  • Gil Herrera, Luz K.
  • Muñoz Galindo, Pablo
  • López Gejo, Juan
  • Palacio Orcajo, Carlos
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: Proceedings of SPIE. Optical Materials and Biomaterials in Security and Defence Systems Technology IX
Fechas del Evento: 24/09/2012
Lugar del Evento: Edinburgh, United Kingdom
Título del Libro: Proceedings of SPIE. Optical Materials and Biomaterials in Security and Defence Systems Technology IX
Fecha: 2012
Volumen: 8545
Materias:
Palabras Clave Informales: Chemical sensors, luminescence, gas detection, GaN LEDs, smartphone, advanced materials, surface functionalization, ruthenium complexes
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Ingeniería Electrónica
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Development of PCB-integrateable microsensors for monitoring chemical species is a goal in areas such as lab-on-a-chip analytical devices, diagnostics medicine and electronics for hand-held instruments where the device size is a major issue. Cellular phones have pervaded the world inhabitants and their usefulness has dramatically increased with the introduction of smartphones due to a combination of amazing processing power in a confined space, geolocalization and manifold telecommunication features. Therefore, a number of physical and chemical sensors that add value to the terminal for health monitoring, personal safety (at home, at work) and, eventually, national security have started to be developed, capitalizing also on the huge number of circulating cell phones. The chemical sensor-enabled “super” smartphone provides a unique (bio)sensing platform for monitoring airborne or waterborne hazardous chemicals or microorganisms for both single user and crowdsourcing security applications. Some of the latest ones are illustrated by a few examples. Moreover, we have recently achieved for the first time (covalent) functionalization of p- and n-GaN semiconductor surfaces with tuneable luminescent indicator dyes of the Ru-polypyridyl family, as a key step in the development of innovative microsensors for smartphone applications. Chemical “sensoring” of GaN-based blue LED chips with those indicators has also been achieved by plasma treatment of their surface, and the micrometer-sized devices have been tested to monitor O2 in the gas phase to show their full functionality. Novel strategies to enhance the sensor sensitivity such as changing the length and nature of the siloxane buffer layer are discussed in this paper.

Más información

ID de Registro: 20362
Identificador DC: http://oa.upm.es/20362/
Identificador OAI: oai:oa.upm.es:20362
URL Oficial: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1393399
Depositado por: Memoria Investigacion
Depositado el: 02 Oct 2013 17:11
Ultima Modificación: 21 Abr 2016 23:06
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