Measurement of Fluorescence in a Rhodamine-123 Doped Self-Assembled “Giant” Mesostructured Silica Sphere Using a Smartphone as Optical Hardware

Sensors

John Canning¹  Angelica Lau¹  Masood Naqshbandi¹  Ingemar Petermann¹ 

[1] Interdisciplinary Photonic Laboratories (iPL), School of Chemistry, The University of Sydney, NSW 2006, Australia; E-Mails:

关键词: biological sensing and sensors;    optical diagnostics for medicine;    fluorescence;    optoelectronics;    light-emitting diodes;    fluorescence microscopy;    nanomaterials;    silica;    optical instruments;    smartphones;    mobile platforms;   

DOI  :  10.3390/s110707055

来源: mdpi

【 摘 要 】

The blue OLED emission from a mobile phone was characterised, revealing a sharp emission band centred at λ = 445 nm with a 3dB bandwidth Δλ ∼ 20 nm. It was used to excite Rhodamine 123 doped within a “giant” mesostructured silica sphere during fabrication through evaporative self-assembly of silica nanoparticles. Fluorescence was able to be detected using a standard optical microscope fitted with a green transmission pass filter and cooled CCD and with 1 ms exposure time demonstrating the potential of mobile platforms as the basis for portable diagnostics in the field.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.