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Chủ đề : Advanced materials and devices


Có 20+ tài liệu thuộc chủ đề "Advanced materials and devices"

High acetone-sensing performance of bi-phase a-/g-Fe2O3 submicron flowers grown using an iron plate

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The shapes and dimensions of the fl owers can be controlled by the treatment time. The gas-sensing properties of the a. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).. Many methods have been proposed to synthesize nano/microstructures of Fe 2 O 3 . The particle-like, rod-like and plate-like nanostructures of a -Fe 2 O 3 ,...

Advanced collagen nanofibers-based functional bio-composites for high-value utilization of leather: A review

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This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by- nc-nd/4.0/).. https://doi.org/10.1016/j.jsamd . Novel functional leathers, such as electromagnetic (EM) wave shielding leather [12], thermal camou fl age leather [13], X-ray shielding leather [14] and conductive leather for smart devices [3], fl ame retardant leather, antibacterial leather, self-cleaning leather, have been explored. By combining different functional materials with...

ZnCr-LDHs with dual adsorption and photocatalysis capability for the removal of acid orange 7 dye in aqueous solution

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The pollutant acid orange 7 (AO7) is ef fi ciently adsorbed on the surface of the three LDHs. The adsorption depends on the nature of the intercalated anion. https://doi.org/10.1016/j.jsamd . Seftel et al., studied the photocatalytic decomposi- tion of the same dye molecule by Zn R Al-CO 3 with different Zn/Al molar ratios (1 ¼ R 4) calcined at different...

In-vitro antibacterial, antioxidant and cytotoxic potential of gold nanoparticles synthesized using novel Elaeocarpus ganitrus seeds extract

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In-vitro antibacterial, antioxidant and cytotoxic potential of gold nanoparticles synthesized using novel Elaeocarpus ganitrus seeds extract. In the present study, we have follwed the hydrothermal path for the synthesis of gold nanoparticles (Au NPs) from the biomaterial Elaeocarpus ganitrus seeds extract, which is a rapid, eco-friendly, non-chemical way. Besides, the antioxidant, antibacterial and anticancer properties of Au NPs were studied....

Semiconductor/relaxor 0e3 type composites: A novel strategy for energy storage capacitors

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Semiconductor/relaxor 0 e 3 type composites: A novel strategy for energy storage capacitors. Relaxor ferroelectrics Energy storage capacitors Lead-free ferroelectric ceramics. We report a novel strategy to enhance the dielectric breakdown strength and the energy storage performance of lead-free relaxor ferroelectric ceramics through the fabrication of semiconductor/relaxor 0 e 3 type composites based on 0.6Ba(Zr 0.2 Ti 0.8 )O 3...

On the magnetic nanostructure of a Co-Cu alloy processed by high-pressure torsion

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On the magnetic nanostructure of a Co e Cu alloy processed by high-pressure torsion. In order to understand the measured magnetic properties in detail, a quantitative analysis of the magnetic microstructure is carried out by magnetic force microscopy and correlated to the observed changes in coercivity. Our results show that the rising coercivity can be explained by a magnetic hardening...

Toughening of ZrB2-based composites with in-situ synthesized ZrC from ZrO2 and graphite precursors

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Different amounts of graphite nano- fl akes (3, 6, and 9 wt%) were added to ZrB 2 e 20 vol% ZrO 2 aiming in-situ formation of ZrC reinforcement. Clean ZrB 2 /ZrC interfaces were observed in the as-sintered micro- structure, especially in the composite containing 6 wt% graphite. The hardness of the SPSed ZrB 2 -based composites was decreased with...

Enhanced photoluminescence, electrochemical and photocatalytic activity of combustion synthesized La10Si6O27:Dy3þ nanophosphors

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Enhanced photoluminescence, electrochemical and photocatalytic activity of combustion synthesized La 10 Si 6 O 27 :Dy 3 þ nanophosphors. La 10 Si 6 O 27 :Dy 3þ Photoluminescence Photocatalytic CIE EIS Sensor. In the present investigation, the wet chemical combustion method was used for the fi rst time to prepare La 10 Si 6 O 27 phosphors by incorporating Dy...

Fabrication of an injectable acellular adipose matrix for soft tissue regeneration

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A decellularization strategy composed of TriseHCl and Sodium Dodecyl Sulfate was developed for adipose tissue. The AAM powder was prepared by mechanical disruption under reduced temperatures, which resulted in an AAM particle size in the range of 100 m m. In the following 8 week post-injection period, AAM supported the in vivo adipogenesis observed in the peripheral side along the...

Post-annealing effect on the structural and optical properties of electrophoretically coated 2D-Layered MoSe2

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Post-annealing effect on the structural and optical properties of electrophoretically coated 2D-Layered MoSe 2. Electrophoretic coating 2D-layered materials Post-annealing. Temperature dependent changes in the structural, nanomorphological and optical characteristics of the 2D layered molybdenum diselenide (MoSe 2. The in- and out-of plane vibrational modes observed in the Raman spectra were asserted as the 2H e MoSe 2 phase which was...

Investigation of photocatalytic and antimicrobial activities of BaWO4-MoS2 nanoflowers

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The optical properties were investigated using the UV-Vis-DRS spectroscopy, and a clear red shift is observed in the bandgap energy of the synthesized BaWO 4 e MoS 2 . The photocatalytic activity of the BaWO 4 eMoS 2 nanocomposites (75 mg) for dye (20 m M) removal is 95% upon a solar light exposure in 80 min. UV light involves...

Centella asiatica mediated solution combustion synthesis of a novel Pr3þ doped Lanthanum Oxyfluoride for display and visualization of latent fingerprints and anticounterfeiting applications

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Novel and highly effective red emitting phosphor Pr 3þ doped (1 e 11 mol. The structural and optical characterization of the nanophosphor is described. The nanophosphor shows a prominent emission in the red region. The concentration dependence of the Pr 3þ luminescence is investigated. The Photoluminescence analysis, CIE and CCT coordinates suggest that phosphors derived from LaOF: Pr 3þ might...

Applied electric field analysis and numerical investigations of the continuous cell separation in a dielectrophoresis-based microfluidic channel

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Applied electric fi eld analysis and numerical investigations of the continuous cell separation in a dielectrophoresis-based micro fl uidic channel. Theoretical calculations were carried out to define the favorable parameters in the electric field operation of the microchip. A simulation model was also used to explore the performance of the design in the isolation of circulating tumor cells (CTCs).. It...

Q-switched pulsed laser direct writing of aluminum surface micro/ nanostructure for triboelectric performance enhancement

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Here, we present a solution for the enhancement of the triboelectric performance by utilizing a Q-switched Pulsed Laser (QSL) that directly writes on an Aluminum surface in the net configuration. The crinkled nanostructure of the surface of Polytetrafluoroethylene (PTFE) is fabricated by the Inductively Coupled Plasma Reactive Ion Etching (ICP-RIE) technology. The optimal triboelectric performance was confirmed by the increase...

Fabrication of flux supported SrTiO3:Eu3þ fluorescent powders: New prospective of dual mode, ink-free data security applications

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Fabrication of fl ux supported SrTiO 3 :Eu 3 þ fl uorescent powders: New prospective of dual mode, ink-free data security applications. In the present paper, various fluxes assisted Eu 3þ doped SrTiO 3 nanophosphors were prepared via a solution combustion route. Among all fluxes, NH 4 F was found to be an appropriate one, which can reduce the forming...

Excellent photocatalytic activity of ternary Ag@WO3@rGO nanocomposites under solar simulation irradiation

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Excellent photocatalytic activity of ternary Ag@WO 3 @rGO nanocomposites under solar simulation irradiation. Ternary nanocomposite Hydrothermal Ag@WO 3 @rGO Adsorption. The ternary nanocomposite of Ag@WO 3 @rGO was synthesized via a two-step hydrothermal method in which the binary composite of the Ag-doped WO 3 (Ag@WO 3 ) prepared by the 1st hydrothermal step was combined with the reduced graphene oxide...

Preparation of a portable calorimetry kit and one-step spectrophotometric nanomolar level detection of L-Histidine in serum and urine samples using sebacic acid capped silver nanoparticles

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spectrophotometric nanomolar level detection of L -Histidine in serum and urine samples using sebacic acid capped silver nanoparticles. This work describes the synthesis of sebacic acid capped silver nanoparticles (SA-AgNPs) by the wet chemical method for the detection of L -Histidine in blood serum and urine samples. The synthesized SA- AgNPs were characterized by several techniques. Moreover, the synthesized SA-AgNPs...

Novel beeswax-chitosan/Zinc-hydroxyapatite biocomposite porous scaffolds: Preparation and biological evaluation

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We developed a novel BW-CS/ZnHA biocomposite utilizing Beeswax-Chitosan and Zinc-hydroxyapatite nanoparticles (ZnHAP). Moreover, the antibacterial, swelling, biodegradations, viability, and cell proliferation capacity of the fabricated biocomposite was assessed. The biocomposite demonstrated upgraded swelling and anti- bacterial activity. Biocompatibility studies were carried out using osteoblast cells and thus we proved the non-toxic nature of the biocomposite.. Osteoblast cell adhesion investigations demonstrated...

An ultrahigh selective uric acid sensor based on SrWO4 nanocomposite using pomelo leaf extract solubilized Nafion modified glassy carbon electrode

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nanocomposite using pomelo leaf extract solubilized Na fi on modi fi ed glassy carbon electrode. The electrocatalytic performance of G-SrWO 4 solu- bilized Nafion (Nf) (G-SrWO 4 /Nf) modified GC electrode was evaluated for uric acid (UA) detection. The G-SrWO 4 /Nf modified GC electrode dis- played excellent electrocatalytic performance in UA sensing. The amperometric studies revealed that the G-SrWO...

Heterostructure of TiO2 and macroporous silicon: The simplest relaxation oscillator

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Heterostructure of TiO 2 and macroporous silicon: The simplest relaxation oscillator. The dielectric characteristics of TiO 2 (capacitive behavior) in combination with the tunnel diode characteristics of the heterostructure (presenting a negative differential resistance, when activated at a threshold voltage) are shown to give rise to the relaxation oscillations.. This is an open access article under the CC BY-NC-ND license...