Lithium niobate – Based sensors: A review

Fakhri, Makram A.; Jabbar, Haneen D.; Alsultany, Forat H.; Salim, Evan T.; Hashim, U.

doi:10.1063/5.0107759

Cited by 5 publications

(4 citation statements)

References 57 publications

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“…Additionally, a polymer has to absorb the energy of light, more precisely, the ultraviolet (UV) light. In polystyrene (PS) samples, the technical reduction was created via the technical degradation [29,30]. If PC is exposed to the UV-weathering in the presence of air, it experiences fast yellowing and slow embrittlement.…”

Section: Uv-weathering Effect On the Mechanical Propertiesmentioning

confidence: 99%

Influence of nano-hydroxyapatite particles on the mechanical and antibacterial properties of polycarbonate films

Abed,

Hameed,

Salim

2023

Mater. Res. Express

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Eco-friendly composite films of polycarbonate/nano-hydroxyapatite have been successfully prepared using the solution casting method with a concentration of (3, 5, 10 and 15% PS/PC with 1.6 n HAP). These films were characterized to study the influence of nano material on the Ultraviolet (UV)-wethering of the mechanical properties utilizing tensile test, thermal properties using lee disc, and antibacterial properties employing culture method. From the tests, it was seen that the nano hydroxyapatite has led to a decrease in the degradation and to an increase of thermal conductivity. The antibacterial studies manifested that the toxicity was severely decreased by the incorporation of nano hydroxyapatite and became highly antibacterial. The contact angle tests elucidated that the prepared films were highly hydrophobic with a hydrophobocity of 99%, which aids in the antibacterial capabilities and hence they can be used as packaging materials.

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Section: Uv-weathering Effect On the Mechanical Propertiesmentioning

confidence: 99%

Influence of nano-hydroxyapatite particles on the mechanical and antibacterial properties of polycarbonate films

Abed,

Hameed,

Salim

2023

Mater. Res. Express

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“…where D is the crystallite size, K is Scherrer's constant (usually taken to be 0.9), λ is the wavelength of the X-rays used, β (FWHM) is the full width at half maximum (in Radians) the diffraction peak, and θ is the Bragg angle (half of the diffraction angle) [42][43][44]. The X-Ray Diffraction patterns of In2O3 deposited on PSi at various laser wavelengths are shown in Figures 3 (a, b, and c).…”

Section: Crystalline Characteristics (Xrd)mentioning

confidence: 99%

Physical Investigations of In2O3/Porous Silicon at Different Laser Wavelengths

Dua’a R. T. Alrayyes,

Makram A. Fakhri,

Ali A. Alwahib

et al. 2024

IJNeaM

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In this study, In2O3 thin films deposited on porous silicon using the pulsed laser deposition (PLD) method. The PSi substrate was prepared by photo electrochemical etching with the diode laser assistant. The impacts of various laser wavelengths on structural, spectroscopic, and performance characterizations were investigated. XRD revealed that the In2O3/PSi films have a polycrystalline cubic structure. The PL test showed measurements of two emission peaks related to In2O3 films (500, 463, 460 nm) and the PSi membrane (857, 852, 829 nm). The peaks at shorter wavelengths increased the energy gap from 2.4 eV to 2.69 eV. AFM results showed the surface roughness of the prepared samples were (3.78, 2.74, 2.3 nm), respectively and the root mean square (4.47, 3.26, 3.12 nm), respectively. FESEM images illustrated that the prepared samples had an average diameter size of (34.51, 25.55, 29.44 nm) with a cauliflower-like shape at 355 nm and rod-shaped particles for both 532 and 1064 nm. EDX tests were performed to figure out the elemental composition of In2O3/PSi the concentrations. The longer the laser wavelength, the higher the concentration of indium. The highest laser wavelength increased the transmission while decreasing the absorption.

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“…This property is useful, e.g., for surface acoustic wave devices in signal processing . These materials also have interesting piezoelectric properties for applications as sensors and actuators. , Finally, this class of materials is of interest for nanoelectronics due to metallic-like conductivity at charged domain walls. − High-quality single crystals necessary for device building are commonly produced by the Czochralski method, resulting in a congruent composition of about 48.6 mol % Li 2 O …”

Section: Introductionmentioning

confidence: 99%

Hydrogen Diffusion in Li(Nb,Ta)O₃ Single Crystals Probed by Infrared Spectroscopy and Secondary Ion Mass Spectrometry

Kofahl,

Dörrer,

Wulfmeier

et al. 2024

Chem. Mater.

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Hydrogen is an impurity that is incorporated into LiNb 1−x Ta x O 3 crystals during crystal growth or during thermal treatment in a humid atmosphere and may influence the physical properties in different ways. In this context, diffusion of hydrogen is an important process because it may enhance the ion conductivity of the material. We investigated the diffusion of hydrogen in LiNbO 3 , LiTaO 3 , and LiNb 0.15 Ta 0.85 O 3 single crystals in the temperature range between 311 and 606 °C using deuterium from a gaseous D 2 O source as a tracer. Diffusivities were determined by analyzing the relative deuterium fraction in the crystal with infrared spectroscopy or secondary ion mass spectrometry. The results are in good agreement with each other. The diffusivities in LiNbO 3 can be described by the Arrhenius law with an activation energy of 0.98 eV. The diffusivities in LiTaO 3 and LiNb 0.15 Ta 0.85 O 3 are nearly identical to those in LiNbO 3 within a maximum factor of 2. A direct interstitial diffusion mechanism is suggested where hydrogen migrates in the energy landscape of the crystal. From a comparison of the partial H and Li ion conductivities calculated from diffusivities to electrical conductivities measured by impedance spectroscopy, we conclude that hydrogen may contribute to the overall conductivity below 400 °C.

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Lithium niobate – Based sensors: A review

Cited by 5 publications

References 57 publications

Influence of nano-hydroxyapatite particles on the mechanical and antibacterial properties of polycarbonate films

Influence of nano-hydroxyapatite particles on the mechanical and antibacterial properties of polycarbonate films

Physical Investigations of In2O3/Porous Silicon at Different Laser Wavelengths

Hydrogen Diffusion in Li(Nb,Ta)O₃ Single Crystals Probed by Infrared Spectroscopy and Secondary Ion Mass Spectrometry

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Lithium niobate – Based sensors: A review

Cited by 5 publications

References 57 publications

Influence of nano-hydroxyapatite particles on the mechanical and antibacterial properties of polycarbonate films

Influence of nano-hydroxyapatite particles on the mechanical and antibacterial properties of polycarbonate films

Physical Investigations of In2O3/Porous Silicon at Different Laser Wavelengths

Hydrogen Diffusion in Li(Nb,Ta)O3 Single Crystals Probed by Infrared Spectroscopy and Secondary Ion Mass Spectrometry

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Product

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Hydrogen Diffusion in Li(Nb,Ta)O₃ Single Crystals Probed by Infrared Spectroscopy and Secondary Ion Mass Spectrometry