Localized surface plasmon resonance based sensing and biosensing has been performed using the camera of a smartphone.

We report here the working of a compact and handheld smartphone-based pH sensor for monitoring ground river water quality. Using simple laboratory optical components camera smartphone, we develop spectrophotometer which is operational in wavelength range 400-700 nm having spectral resolution 0.305 nm/pixel our equipment. The measures variations absorption band sensitive dye sample different solutions. transmission image spectra through grating gets captured by subsequently converted into...

This letter demonstrates a technique that utilizes the camera of smartphone for evanescent wave coupled spectroscopic sensing. Using simple optical components, is converted into highly resolved spectrometer (0.305 nm per pixel), and using right-angled glass prism, field internally reflected light signal from broadband source allowed to interact with external medium. The primary advantages proposed sensing are its compactness, portability, cost-efficiency.

In this paper the utilization of smartphone as a detection platform for colorimetric quantification biological macromolecules has been demonstrated. Using V-channel HSV color space, BSA protein, catalase enzyme and carbohydrate (using D-glucose) have successfully investigated. A custom designed android application developed estimating total concentration macromolecules. The results compared with that standard spectrophotometer which is generally used in laboratory settings by measuring its...

We report here a gasoline sensor utilizing localized surface plasmon resonance (LSPR) phenomenon of metal nanoparticles (NPs) with U-bent optical fiber. The response the noble NPs upon interaction has been simulated and experimentally demonstrated. increase in vapor over period time induces change refractive index adjacent medium nanoparticle colloids, adhering to probe, thus variation observed accordingly. This close proximity metals produces measurable output signal that correlated...

We report the working of a smartphone-based optical sensor for measurement pH level colorless aqueous media. By integrating readily available laboratory components to camera smartphone, we convert smartphone into visible spectrophotometer with spectral resolution 0.345 nm/pixel. Evanescent light signal from designed sensing setup is allowed interact sensitive dye sample. The transmitted region then captured by in form modulated image spectrum. can detect change medium 0.12 unit within range...

Naturally occurring photonic crystal structures play an important role in different fields of application. Herein, we exploit the periodic pore pattern a diatom frustule and demonstrate surface-enhanced Raman scattering (SERS) using its structure as template for SERS substrate. Gold nanoparticles (AuNPs) were initially allowed to self-assemble on surface inside pores diatoms. The enhancement localized plasmon resonance (LSPR) field magnitude assembled AuNPs studied simulation software. For...

In the present work, use of smartphone for colorimetric quantification biomolecules has been demonstrated. As a proof-of-concept, BSA protein and carbohydrate have used as biomolecular sample. at different concentrations treated with Lowry's reagent Anthrone's respectively . The change in color reagent-treated samples recorded camera combination custom designed optomechanical hardware attachment. This correlated channels two models namely RGB (Red Green Blue) HSV (Hue Saturation Value)...

Smartphone-based imaging platforms have shown great prospects as compared to the traditional optical microscopes. With their continuous development, they seem a wide variety of biomedical applications. In this work, smartphone-based platform was designed, developed, and fabricated using an electroluminescence display panel (EDP) source illumination. The EDP is found homogenous intensities across helped in customizing illumination with high image quality contrast sample under study....

This paper highlights the losses arising from bending that plays a vital role in long-term communication purposes.To get better transmission it is very essential to control losses.Losses of photonic crystal fiber (PCF) can also be controlled by altering structural parameter (d/ᴧ and ᴧ) regulates structure.Different materials (viz.crown phosphate) based PCF with lower has been reported exploring whole band (0.2-2µm) variable parameters radii.During fiber, evanescent field energy drives light...