Surface plasmon resonance monitoring of temperature via phase measurement

Enhanced Sensitivity of Surface Plasmon Resonance Phase-Interrogation Biosensor by Using Silver Nanoparticles

“…Recently, we have found that the sensitivity of this technique has strong dependence on the wavelength of incident light in our study of SPR temperature sensing [11].…”

“…A sawtooth signal was applied to the electro-optic modulator, and the sawtooth voltage was used as the phase-locking reference. By measuring the signal intensity and by assuming almost unity reflectivity for the s wave (since only p wave can excite SPR at a metal-dielectric surface), the relative phase difference between the p and the s waves arriving at the photodetector can finally be calculated using Jones calculus [9,11,12].…”

“…The size of nanoparticles can be controlled by deposition parameters, and therefore, the SPR wavelength of nanoparticle film could be tuned. As mentioned above, the wavelength of incident light is crucial to the sensitivity of SPR sensor based on phase-interrogation technique [9,11,12]. It is the purpose of our present work to extend SPR phase interrogation to refractive index measurement of glucose based on silver nanoparticle film produced by thermal evaporation.…”

“…These include, for example, chemical and biological sensing [2][3][4][5][6][7][8][9], film-thickness sensing [10], temperature sensing [11], and angular measurement [12]. Recently, it has been demonstrated that this SPR monitoring technique for chemical and biological sensing can achieve very high sensitivity, down to the order of 10 −8 [8,9] refractive index units (RIU).…”

Plasmonic Notch Filter Design Based on Long-range Surface Plasmon Excitation Along Metal Grating

“…The excitation condition of SPR is highly sensitive to the refractive indices and thicknesses of the metallic and dielectric materials near the metal-dielectric interface. This characteristic has been applied in many device designs and applications including electro-optics modulators [2][3][4][5][6][7], plasmonic filters [8][9][10][11], ultrahigh sensitivity chemical and biological sensing [12][13][14], ultrathin film deposition monitoring [15], temperature [16], angular measurements, etc. [17].…”