Electro-optic (EO) effect in proton-exchanged lithium niobate: towards EO modulator

Paliwal, Ayushi; Sharma, Anjali; Guo, Ruyan; Bhalla, A. S.; Gupta, Vinay; Tomar, Monika

doi:10.1007/s00340-019-7227-7

Cited by 11 publications

(4 citation statements)

References 30 publications

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“…The results demonstrated that a higher resonance angle shift was associated with a higher value of refractive index of the sample. The results obtained are in good agreement to the existing reports available in the literature [80–83].…”

Section: Resultssupporting

confidence: 91%

Multiple protein‐patterned surface plasmon resonance biochip for the detection of human immunoglobulin‐G

Kashyap

Boro

Yasmin

et al. 2023

Journal of Biophotonics

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A portable surface plasmon resonance (SPR) measurement prototype integrated with a multiple protein‐patterned SPR biochip is introduced for label‐free and selective detection of human immunoglobulin‐G (H‐IgG). The polyclonal anti‐H‐IgG antibodies derived from goat, rabbit, and mouse were immobilized through polydimethylsiloxane (PDMS) microchannels to fabricate the patterned SPR biochip. The PDMS surface was functionalized using 3‐aminopropyltrimethoxysilane and bonded to carbodiimide‐activated gold substrates to construct irreversibly bonded hydrophilic microfluidic chip at room temperature. For SPR measurement, a custom‐made system is developed with a high angular scanning accuracy of 0.005° and a wide scanning range of 30°–80° that avoids the conventional requirement of expensive goniometric stages and detector arrays. The SPR biochip immobilized with 750 μg/mL goat anti‐H‐IgG demonstrated detection of H‐IgG with a detection limits of 15 μg/mL, and linear response through a wide concentration range (15–225 μg/mL) of high coefficient of determination (R2 = 0.99661). The selectivity of the sensor was investigated by exposing them to two different non‐specific targets (bovine serum albumin and polyvalent antivenom). The results indicate negligible sensor response towards nonspecific targets (0.25° for 30 μg/mL bovine serum albumin (BSA) and 0.25° for 30 μg/mL polyvalent antivenom) in comparison to H‐IgG (1.5° for 30 μg/mL).

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Section: Resultssupporting

confidence: 91%

Multiple protein‐patterned surface plasmon resonance biochip for the detection of human immunoglobulin‐G

Kashyap

Boro

Yasmin

et al. 2023

Journal of Biophotonics

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“…The broadening of the SPR peak is probably due to the aggregation of silver nanoparticles. The broadening of the absorption peak of SPR is due to the aggregating of metal nanoparticles where an adjacent nanoparticle brings a destructive interference of the plasmon resonance [50] . Figure 8 represents the UV‐Vis spectra of pure PANi, PZ 10, and PZ 10 A 02 , spectra show absorption bands characteristic of PANi at wavelengths 304 nm and 622 nm attributed to the π–π* transitions in benzoid.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Sensing Performance of an Ammonia Gas Sensor Based on Ag‐Decorated ZnO Nanorods / Polyaniline Nanocomposite

Karmakar

Jain²,

Fernandes

et al. 2023

ChemistrySelect

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The development of low‐cost ammonia sensors with high sensitivity and selectivity has gained considerable interest. Though the response of these sensors at room temperature is low and needs enhancement. In the present study high sensitivity ammonia gas sensors based on nanocomposite films of polyaniline (PANI) and with varying ZnO concentrations were synthesized and investigated. With a loading of 10 at% ZnO, the gas sensing response of 59 % was obtained for 120 ppm NH3 gas. The gas response was further enhanced by decorating the ZnO nanorods with different concentrations of silver (Ag) nanoparticles. The Ag‐decorated ZnO nanorods were embedded in the PANi matrix using the in‐situ oxidative polymerization technique. It was shown that PANi ZnO, p‐n junction, and the introduction of porosity in nanocomposite act synergistically in increasing the resistance caused by the deprotonation of PANi by NH3. Among various compositions studied, 2 % loading of Ag in ZnO embedded in PANi matrix, thin films were found to be highly selective and sensitive towards NH3 gas at room temperature with a chemiresistive response of 70 % at 120 ppm and a recovery time of less than 120 s. The selectivity of the nanocomposite was also studied towards various reducing and oxidizing gasses.

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“…As shown in Figure a, the surface morphology is typical for sputtered WO 3 and does not depend on the precharging method. [ 27 ] The XRD spectra (Figure S4, Supporting Information) of the charged and pristine WO 3 samples show very broad peaks due to the low crystallinity. Thus, there are no structural changes observable compared to pristine WO 3 during the reduction of the sputtered WO 3 with low crystallinity.…”

Section: Resultsmentioning

confidence: 99%

Photochemical Precharging of Tungsten Trioxide for Enhanced Transmittance Modulation in Flexible Electrochromic Devices

Brändler

Niklaus

Schott

et al. 2023

Adv Materials Technologies

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UV irradiation is used to precharge sputtered tungsten trioxide (WO3) on polyethylene terephthalate enhancing the photochromic response with organic solvents. A comparison between the optical and electrochemical properties of photochemically and electrochemically charged WO3 results in a correlation of the transmittance to the respective charge density. This allows for a precise control of the charge density in the precharging process monitored by UV–Vis spectroscopy. A proof‐of‐concept flexible electrochromic device combining precharged WO3 (charge density: 20 mC cm−2) and Prussian blue (15 mC cm−2) exhibits a superior change in the visible light transmittance (τv) from 8% (dark) to 79% (bleached) and a coloration efficiency of 139 cm2 C−1 at 716 nm.

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Electro-optic (EO) effect in proton-exchanged lithium niobate: towards EO modulator

Cited by 11 publications

References 30 publications

Multiple protein‐patterned surface plasmon resonance biochip for the detection of human immunoglobulin‐G

Multiple protein‐patterned surface plasmon resonance biochip for the detection of human immunoglobulin‐G

Enhanced Sensing Performance of an Ammonia Gas Sensor Based on Ag‐Decorated ZnO Nanorods / Polyaniline Nanocomposite

Photochemical Precharging of Tungsten Trioxide for Enhanced Transmittance Modulation in Flexible Electrochromic Devices

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