Enhanced structural, optical, thermal, mechanical and electrical properties by a noval approach (nanoparticle doping) on ferroelectric triglycine sulphate single crystal

Mahendra, K.; Kumar, Harshvardhan; Udayashankar, N.K.

doi:10.1007/s00339-019-2499-7

Cited by 25 publications

(5 citation statements)

References 92 publications

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“…Figure 7a and b shows the e 0 and e 00 with respect to varying frequencies. e 0 and e 00 decrease as the frequency increased and such behavior is ascribed to the normal dielectric behavior of the sample [45]. From Fig.…”

Section: Dielectric Properties Studiesmentioning

confidence: 81%

Corrosion-resistant polypyrrole-banana carbon (PPy-BC) nanocomposites for protection against electromagnetic interference: a green approach

Madhusudhan

Mahendra

Raghavendra³

et al. 2021

J Mater Sci: Mater Electron

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The article focuses on the suitability of electrically characterized polypyrrole-banana carbon (PPy-BC) nanocomposites for broadband electromagnetic interference (EMI) shielding application. The environmental-friendly polypyrrole (PPy)-banana carbon (BC) nanocomposites were synthesized via in situ chemical polymerization technique and were characterized using powder X-ray diffraction, FT-IR spectroscopy, scanning electron microscopy (SEM), and UV-Vis spectroscopy techniques. Frequency-dependent dielectric, impedance, loss tangent, and conductivity measurements were analyzed in detail in the frequency range of 20 Hz to 1 MHz. The EMI shielding efficiency (SE) of PPy-BC nanocomposites were performed in the broad frequency range of 12 GHz to 18 GHz (Ku band), relevant for practical applications. The EMI SE achieved for PPy-BC nanocomposites was in the range of * 12 to * 18 dB. The present investigation also explores the anticorrosion property of polypyrrole nanocomposites coatings on mild steel surface in 5 M hydrochloric acid solution through atomic absorption spectroscopy (AAS), potentiodynamic polarization, Nyquist plots, and SEM techniques. AAS studies revealed that corrosion inhibition efficiency increases with an increase in the concentration of polypyrrole nanocomposites. Electrochemical impedance measurements showed that charge transfer resistance values depend on the composites concentration. Obtained SEM results also support the AAS and electrochemical results. The observed electrical property and EMI shielding properties with anticorrosive behavior suggest that PPy-BC nanocomposites can be optimized for useful technological applications.

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Section: Dielectric Properties Studiesmentioning

confidence: 81%

Corrosion-resistant polypyrrole-banana carbon (PPy-BC) nanocomposites for protection against electromagnetic interference: a green approach

Madhusudhan

Mahendra

Raghavendra³

et al. 2021

J Mater Sci: Mater Electron

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“…where T is the transmittance and t is the thickness of the crystal. The optical band gaps of both the DAST single crystals were also estimated by the Tauc plot [22,23]:…”

Section: Resultsmentioning

confidence: 99%

Growth of 4-N,N-Dimethylamino-4'-N'-methyl-stilbazolium Tosylate (DAST) Organic Single Crystals Controlled by Oleic Acid

Wen

Zhou

et al. 2019

Crystals

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4-N,N-Dimethylamino-4'-N'-methyl-stilbazolium Tosylate (DAST) organic single crystals controlled by (Z)-Octadec-9-enoic acid (oleic acid, OA) was grown by a slow-cooling method. The as-grown DAST single crystals were systematically characterized by FTIR, X-ray diffraction, second harmonic generation, and UV-vis spectroscopy. Results indicate that addition of OA into the DAST solutions leads to the controlled growth of DAST single crystals and consequently, the crystal quality and optical properties can be modified. Particularly, the DAST crystals grown under the control of OA exhibit larger sizes, higher crystallinities, and better optical qualities with higher optical band gaps and lower defect density, compared with those grown in the absence of OA. These results are helpful for better understanding the controlled growth of DAST organic single crystals and modifying their properties for practical applications.

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“…Good optical, dielectric, and thermal properties of semi-organic single crystals enable application in modern technologies for design components in photonic devices, optical communication systems, optoelectronics, frequency convertors, and nonlinear optical (NLO) devices [1]. Single crystals of glycine amino acid containing copper sulphate (CuSO 4 ) are used in optical high-resolution band pass filters for spectral devices [2].…”

Section: Introductionmentioning

confidence: 99%

Growth of New, Optically Active, Semi-Organic Single Crystals Glycine-Copper Sulphate Doped by Silver Nanoparticles

et al. 2023

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The purpose of this study is to modify all physicochemical properties of glycine–copper sulphate single crystals, such as crystal habits, molar mass, thermal stability, optical activity, and electrical properties. The novelty of this study is growth of glycine–copper sulphate single crystals doped by a low concentration of silver nanoparticles (SNPs) that improved both crystal habits and physicochemical properties. The originality of this work is that trace amounts of SNPs largely increased the crystal size. Crystals have molar stoichiometric formula [glycine]0.95, [CuSO4·5H2O]0.05 in the absence and presence of silver nanoparticles (SNPs) in different concentrations: 10 ppm, 20 ppm, and 30 ppm. The crystals’ names and abbreviations are: glycine–copper sulphate (GCS), glycine–copper sulphate doped by 10 ppm SNPs (GCSN1), glycine–copper sulphate doped by 20 ppm SNPs (GCSN2), and glycine–copper sulphate doped by 30 ppm SNPs (GCSN3). Dopant silver nanoparticles increased: crystallinity reflecting purity, transparency to UV-Vis. electromagnetic radiation, thermal stability, and melting point of glycine–copper sulphate single crystal. GCSN3 is a super conductor. High thermal conductivity of crystals ranging from 1.1 W·min−1·K−1 to 1.6 W·min−1·K−1 enabled attenuation of electromagnetic radiation and rapid heat dissipation due to good dielectric and polar properties. On rising temperature, AC electrical conductivity and dielectric properties of perfect crystal GCSN3 increased confirmed attenuation of thermal infrared radiation.

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Enhanced structural, optical, thermal, mechanical and electrical properties by a noval approach (nanoparticle doping) on ferroelectric triglycine sulphate single crystal

Cited by 25 publications

References 92 publications

Corrosion-resistant polypyrrole-banana carbon (PPy-BC) nanocomposites for protection against electromagnetic interference: a green approach

Corrosion-resistant polypyrrole-banana carbon (PPy-BC) nanocomposites for protection against electromagnetic interference: a green approach

Growth of 4-N,N-Dimethylamino-4'-N'-methyl-stilbazolium Tosylate (DAST) Organic Single Crystals Controlled by Oleic Acid

Growth of New, Optically Active, Semi-Organic Single Crystals Glycine-Copper Sulphate Doped by Silver Nanoparticles

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