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[Display omitted] • Transformation nanpaticle to nanotube by simple hydrothermal method. • TEM analysis revealed the transformation of nanoparticles to nanotube morphology. • TiO 2 nanotube photoanode showed excellent energy conversion efficiency (2.38 %), • Short circuit current densities (I sc) (6.29 mA/cm2), and fill factors (FF) (0.63), respectively. Morphology plays a vital role in dye-sensitized solar cells (DSSCs) due to their high surface area, dye adsorption and electron transport. In this study, we have designed and fabricated titanate nanotube photoanodes by a simple one-step hydrothermal method. High-resolution transmission electron microscope (HRTEM) analysis revealed the transformation of nanoparticles to nanotube morphology. Brauner-Emmett-Teller (BET) method showed the enhanced surface area and pore diameter of nanotubes. TiO 2 nanotube photoanode showed excellent energy conversion efficiency (2.38 %), short circuit current densities (I sc) (6.29 mA/cm2), and fill factors (FF) (0.63), respectively. [ABSTRACT FROM AUTHOR]

[Display omitted] • Novel hybrid ink achieves robust adhesion of Co-Cu films to glass substrates. • Applicable to metal conductors for electronic devices and integrated circuits. • Upper Co/CoO layer effectively prevents copper oxidation under extreme conditions. • Self-stacking two-layer structure enhances conductivity and resistivity. Present study developed a hybrid ink comprising sub-10 nm Cu nanoparticles and a cobalt- N, N-dimethyl-1,3-propanediamine complex, enabling the fabrication of Co-Cu films with excellent conductivity (7.8 μΩ·cm). The films exhibit a unique self-stacking two-layer structure, effectively preventing Cu oxidation during sintering. Remarkably, these Co-Cu films demonstrate outstanding durability, with only a 16 % increase in resistivity after a one-week high-temperature/humidity test (85 °C/85 % RH). Strong adhesion to glass substrates, without additional treatments, enhances their suitability for diverse electronic applications. [ABSTRACT FROM AUTHOR]

• A plasmonic sandwich nanostructure has been designed and prepared. • Large third-optical susceptibility has been achieved. • Laser power as low as 0.1 mW is used. We designed an optical structure comprising plasmonic and dielectric materials that exhibits large third-order optical susceptibility and low-power consumption. Finite-difference time-domain simulation results were used to select tightly-packed gold nanosphere (AuNS) film, indium tin oxide (ITO) films, and gold (Au) thin film to construct AuNS/ITO/Au sandwiched nanostructures. Local-field enhancement factors up to 425 and large third-order optical susceptibility (χ(3)) with an amplitude order of 4.4 × 10−2 esu were achieved under an excitation power of 0.1 mW. These χ(3) results are exceptionally high, thereby rendering AuNS/ITO/Au a promising material for future applications in optical switches and related nonlinear optical devices. [ABSTRACT FROM AUTHOR]

• A novel method has been developed to prepare CdS NPCs. • Morphology and structure of samples were examined by SEM, TEM and XRD. • Synthesis mechanism of CdS NPCs is revealed by XPS. • CdS NPCs exhibit enhanced photocatalytic properties compared to CdS NPs. Herein, CdS nanoparticle clusters (NPCs) were successfully synthesised using a one-step Ti mesh–assisted hydrothermal method. These NPCs had uniform size, were small and comprised of small CdS nanoparticles (NPs). Furthermore, analyses using scanning electron microscopy, transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy elucidated the synthesis mechanism of CdS NPCs. Compared with CdS NPs, CdS NPCs exhibited a rougher surface and stronger visible light absorption, thus demonstrating more stable photocurrent density under visible light irradiation and, ultimately, higher photocatalytic activity. Overall, the simple and efficient synthesis process of CdS NPCs presents a promising avenue for novel nanomaterial preparation. [ABSTRACT FROM AUTHOR]

• HfO 2 and Y-doped HfO 2 nanoparticles were obtained by a Pechini method. • Phase transitions of HfO 2 were achieved by adding Y at 500 °C. • The substitution of Hf4+ with Y3+ cations led to a decrease in nanoparticle size. • The optical properties of HfO 2 were modified by inserting Y3+ cations. Undoped and Y-doped HfO 2 (Y:HfO 2) nanoparticles (NPs) were synthesized by the Pechini method. X-ray diffraction (XRD) analysis revealed that increasing Y concentration in HfO 2 promotes the phase transition from monoclinic to tetragonal, with a crystallite size decrease from 5.3 to 2.9 nm. Phase changes were also confirmed by Raman spectroscopy, where the intermediate γ 1 -forms were identified. Moreover, microscopy images revealed the presence of spherical NPs between 6.7 and 4.6 nm. The diffuse optical reflectance (DOR) spectroscopy showed that HfO 2 NPs with higher Y concentrations caused attenuation of light reflection in the UV region and enhanced it in the visible light region. [ABSTRACT FROM AUTHOR]

[Display omitted] • A novel synthesis combining Stӧber method and hydrothermal method is developed. • The saturation magnetization of Fe 3 O 4 nanorods reached 81 emu g−1. • SiO 2 coating layer was partially nitrided to Si 3 N 4 to keep rod-shaped morphology. A novel approach combined Stӧber method with the hydrothermal method was developed for the synthesis of hollow Fe 3 O 4 nanorods by using SiO 2 as the template and FeOOH nanorods as the precursor. The investigation of the reaction process confirmed that, as the SiO 2 outer layer was gradually dissolved and partially nitrided to Si 3 N 4 in an alkaline hydrazine solution, FeOOH was converted to Fe 3 O 4 , resulting in a regular rod-shaped morphology with a hollow structure. The prepared hollow Fe 3 O 4 nanorods had an average length of 430 nm and an average width of 110 nm, and exhibited a high saturation magnetization of 81.6 emu g−1. [ABSTRACT FROM AUTHOR]

• Ytterbium oxide (174Yb 2 O 3) is deposited on mechanically rolled tantalum (MRTa) backed thin foil. • Modification in materials and electrical properties are recorded for 174Yb 2 O 3 /MRTa backed thin film. • Yb 2 O 3 nanostructures are formed uniformly on the MRTa surface. • Chemical inertness of the newly formed Yb 2 O 3 /MRTa towards oxidation, is demonstrated. • Enhancement of 92.1% in electrical conductivity is observed after Yb 2 O 3 deposition on MRTa foil. The effect of ytterbium oxide (174Yb 2 O 3) deposition in modifying the material s and electrical properties of mechanically rolled tantalum (MRTa) thin foil is investigated through electron microscopic, crystallographic, elemental analysis, and current-voltage (I–V) characteristics. A 0.82 μm thick layer of 174Yb 2 O 3 over ∼2.1 μm thick MRTa foil (Yb 2 O 3 /Ta) reduces the dimension of surface features, and indicates formation of nanoparticles. The electron beam imaging, energy dispersive X-ray (EDX), and X-ray diffraction (XRD) analysis reveal formation of uniformly distributed Yb 2 O 3 on MRTa surface and chemical inertness of the newly formed Yb 2 O 3 /MRTa thin film towards oxidation. The room temperature I–V characteristics of both the MRTa foil and Yb 2 O 3 /MRTa thin film tested with silver (Ag) top contact electrodes exhibit ohmic conductions and demonstrate an overall enhancement of 92.1% in electrical conductivity after Yb 2 O 3 thin film deposition on MRTa foil. [ABSTRACT FROM AUTHOR]

• Nanofibrous HAp was fabricated by assembling ACP nanoparticles. • A spinning solution was prepared by blending ACP and PVA aqueous solution. • ACP-PVA nanofibers were obtained by electrospinning and calcined to form nanofibrous HAp. • The obtained HAp nanofibers were composed of nanoparticles and had nanopores. • The morphology of the nanofibrous HAp was rodlike, meshlike, or fiberlike. Nanofibrous hydroxyapatite (HAp) composed of nanoparticles was successfully fabricated by assembling amorphous calcium phosphate (ACP) nanoparticles with poly(vinyl alcohol) (PVA) by electrospinning. ACP-PVA nanofibers were obtained by electrospinning. A nanofibrous HAp was fabricated by calcination of the ACP-PVA nanofibers, and the obtained HAp nanofibers were composed of nanoparticles and had nanopores. The concentrations of ACP and the PVA binder in the spinning solution affected the morphology of the obtained nanofibrous HAp structure; rodlike, meshlike, and fiberlike structures were obtained by adjusting the concentrations. [ABSTRACT FROM AUTHOR]

Highlights • A green method was developed to synthesise gold nanoparticles (Au NPs). • Biosynthesised NPs were predominantly spherical. • The Au NPs were capped by amide characteristic of plant proteins. Abstract The purpose of this research was to develop a green method to synthesise gold nanoparticles (Au NPs) with cell suspension cultures of Catharanthus roseus. Reaction mixtures containing cell-free culture filtrate of C. roseus and gold III ions, which was initially pale yellow, turned wine red after 24-h incubation due to Au NP formation. UV–Vis spectra of the reaction mixtures showed a characteristic absorption peak at 546 nm. The biosynthesised NPs were predominantly spherical with 2–20 nm size; their crystalline nature was revealed by X-ray diffraction patterns. FTIR analysis indicated that Au NPs were capped by amide characteristic of plant proteins, which makes them apt for various applications. [ABSTRACT FROM AUTHOR]

[Display omitted] A cheap and effective N-doped carbon sphere electrocatalyst for H 2 O 2 production was facilely prepared by thermal conversion of aminophenol formaldehyde resin microspheres. • Aminophenol formaldehyde resin microspheres prepared at a scale of about 15 g. • Cheap and efficient N-doped carbon microsphere electrocatalysts for 2e-ORR. • >80% H 2 O 2 selectivity between 0.1 and 0.5 V vs RHE. • High electrolysis H 2 O 2 production rate of 48 mmol g cat -1h−1 in 0.1 M KOH. The electrocatalytic 2-electron oxygen reduction reaction (2e-ORR) to hydrogen peroxide (H 2 O 2) required cheap and efficient electrocatalytic materials. Herein cheap 3-aminophenol formaldehyde resin microspheres were synthesized at a large scale of about 15 g in one run. By annealing it, nitrogen-doped carbon spheres could be conveniently obtained, which was found to be efficient electrocatalyst for 2e-ORR with the highest H 2 O 2 selectivity of about 94% at 0.4 V vs RHE. The electrolysis H 2 O 2 production rate over N-doped carbon in 0.1 M KOH solution reached 48 mmol g cat -1h−1. Aminophenol formaldehyde resin-derived carbon provided a cheap and effective catalyst for electrocatalytic H 2 O 2 production. [ABSTRACT FROM AUTHOR]

BiFeO 3 nanoparticles (BFO-NPs) have been successfully synthesized through modified microwave-assisted hydrothermal method. The obtained BFO-NP was hexagonal phase with R3c structure and covered with a large number of surface hydroxyl groups. Compared with the bulk BiFeO 3 microsphere, BFO-NP has much higher purity and similar band gap energy, about 2.10 eV. The photocatalytic performance of BFO-NP was evaluated by Rhodamine B (RhB) removal without any sacrificial agent under visible-light irradiation. A fivefold increase in the rate of RhB degradation and mineralization was obtained, which should result from effective separation of the electron-hole pairs. Furthermore, the scavenger-experiments reveal that photo-generated holes and hydroxyl radicals were the primary reactive species. This study opens a new pathway to synthesize BiFeO 3 nanoparticle by hydrothermal method and provides a referential route for other perovskite photocatalysts. [ABSTRACT FROM AUTHOR]

In this study, we synthesized mesoporous titanium dioxide (TiO 2 ) nanoparticles and applied them to organic light-emitting diode (OLED) devices to improve the device efficiency by promoting light scattering in the device. Silver nanowire (AgNW) electrode was utilized as transparent anode for the OLEDs, because the AgNW anode integrated with a TiO 2 scattering layer can be easily formed using a transfer process. When the mesoporous TiO 2 nanoparticles were utilized, the OLED efficiency was improved by about 30% as compared with the case of amorphous TiO 2 nanoparticles. This is because the refractive index and surface area of the mesoporous nanoparticles are larger than those of the amorphous ones, thereby further promoting the scattering of the light generated in the OLED device. [ABSTRACT FROM AUTHOR]

Although all-inorganic perovskite CsPbBr 3 perovskites quantum dots (QDs) have garnered enormous interest in light emitting diodes, nonetheless limited attention has been paid to the perovskite-related CsPb 2 Br 5 nanoplatelets . Herein, we prepared perovskite-related CsPb 2 Br 5 nanoplatelets (NPLs) by a facile injection method. The synthesised CsPb 2 Br 5 NPLs showed single tetragonal crystalline phase with a uniform square shape and a high photoluminescence (PL) emission around 520 nm (PL quantum yield (QY) > 85%). In addition, we have demonstrated the fabrication of highly efficient CsPb 2 Br 5 NPLs-based green light emitting diodes with the highest luminance of 800 cd/m 2 and a relative low turn-on voltage of 3.0 V. [ABSTRACT FROM AUTHOR]

Nanomedicine utilizes biocompatible nanomaterials for therapeutic purposes to treat various diseases. Flavonoids present in the plant materials act as both reducing and electrostatic stabilizing agents for the ‘Green’ synthesis of metal nanomaterials. Further, these nanomaterials are effectively used to treat various cancer cells and pathogenic microbes. The experimental approach for flavonoids-mediated nanomaterial (FMN) synthesis is simple, rapid, cost-effective and reproducible. However, the detailed reports on synthesis, mechanism, and in vivo application of FMN are very limited in literatures. Thus, this focused review will definitely help researchers who are working on biocompatible nanomaterial synthesis and application in biomedical sector. Further, this is the first review to discuss the significance, mechanisms, and future trends of FMN. The FMN and their dual function as both nano-carrier and nano-drug in various biomedical sectors might be a hot research topic in upcoming days. [ABSTRACT FROM AUTHOR]

Highly crystalline, phase-pure NaFeO 2 submicron plates are synthesized using a facile and simple supercritical methanol route. The synthesized NaFeO 2 submicron plates are 160 to 680 nm in width and 90 nm in thickness. Because of their two-dimensional structure, the NaFeO 2 submicron plates exhibit excellent electrochemical performance with smaller polarization compare to micron-sized NaFeO 2 particles synthesized using a solid-state method; the initial charge capacity is 94 mAh g −1 at 10 mA g −1 and high-rate capacity of 34 mAh g −1 at 50 mA g −1 , which is 180% higher than that of solid-state synthesized NaFeO 2 . The enhanced charge-discharge characteristics are attributed to the low charge transfer resistance and high Na-ion diffusivity. [ABSTRACT FROM AUTHOR]

Silk fibroin/strontium carbonate (SF/SrCO 3 ) composite films fabricated from a simple biomineralization process is reported. These composite films with different SrCO 3 concentrations are achieved and can change from transparent to opaque as the SrCO 3 content increased. The resulting SrCO 3 demonstrates different morphologies, chrysanthemum pattern grown on film surface and micro-globule composed nano-particle grown in film. Moreover, SF/SrCO 3 composites show excellent biocompatibility with rat marrow stem cells (MSCs), making it a valuable biofunctional silk material for bone engineering applications. [ABSTRACT FROM AUTHOR]

Thiol-reactive group - pyridyl disulfide functionalized magnetic nanoparticles were prepared via co-precipitation following functionalization by stöber method. The particles were characterized and employed to fast and selective conjugate and isolate protein with free thiol from mixed proteins under mild condition. And the released protein has the original sulfhydryl group without any unnecessary modification. [ABSTRACT FROM AUTHOR]

A series of K 2 Bi 0.98−x Er 0.02 Yb x Nb 5 O 15 (KBN-x, 0≤x≤0.15) up-conversion nanoparticles (UCNPs) with different particle sizes have been prepared which exhibit a single phase tungsten bronze (TB) structure. It is found that synthesis temperature (T s ) acts an important factor to determine the particle size and nanorod-like particles are obtained for all samples as T s ≤1100 °C. Bright up-conversion (UC) green ( 2 H 11/2 / 4 S 3/2 → 4 I 15/2 ) and weak red ( 4 F 9/2 → 4 I 15/2 ) emissions are realized. Based on the fluorescence intensity ratio (FIR) of green emissions, temperature-dependent UC luminescence and thermometric properties of KBN-x UCNPs were investigated. We show that Yb 3+ -concentration and particle size both have important influence on the sensitivity of KBN-x system. [ABSTRACT FROM AUTHOR]

• FePt-based nanoparticles are self-assembled into superlattices on water subphase. • Magnetic monolayers are formed at liquid-air interface during hexane evaporations. • Miscibility between subphase solvents and hexane affects the ordered monolayer. • High surface tension gradient promotes nanoparticle assembly on the liquid surface. The miscibility and surface tension gradient between the upper and subphase solvents were shown as key factors in the self-assembly of magnetic nanoparticles at the liquid-air interface. The drop-casting of magnetic nanoparticles suspended in hexane does not result in a long-range pattern on the surface of liquid subphases of lower surface tension gradient and higher miscibility with hexane. Instead, nanoparticles disperse into the mixture between upper and subphase solvents. By contrast, the low miscibility and high surface tension gradient between deionized water subphase and hexane lead to a long-range ordered monolayer. Interestingly, domains of hexagonal close-packed superlattices and honeycomb pattern are also obtained. According to this unique finding, a variety of two-dimensional ordered structures can be assembled at water-air interface. [ABSTRACT FROM AUTHOR]

Highlights • ZnFe 2 O 4 NPs were synthesized using cost effective sol-gel auto-combustion method. • The structure and morphology of ZnFe 2 O 4 NPs were studied using XRD and SEM. • Anti-candida and anti adhesion activity of ZnFe 2 O 4 NPs was studied. • ZnFe 2 O 4 NPs were found potential candidate in Anti-candida and anti adhesion application. Abstract Present work is intended to study the anti-candida and anti-adhesion efficiencies of zinc ferrite nanoparticles (ZnFe 2 O 4 NPs), obtained by using a simple, cost-effective sol-gel auto-combustion method. Results of this study suggest that the ZnFe 2 O 4 NPs hold the potential for anti-candida activity, also capable to restrict the 99% cell adhesion and can be a promising nanomaterial against Candida albicans. [ABSTRACT FROM AUTHOR]

• AgCuAl medium entropy alloy films were deposited on glass substrates. • Nanoparticles were induced by continuous wave laser dewetting process. • At lower unit volume energies (0.1 ∼ 1.3 J/cm3), the particles had a size of around 120 ∼ 130 nm. • A strong Raman scattering effect at 680 cm−1 in the presence of melamine in aqueous solution. AgCuAl films were deposited on glass substrates using a sputtering system. The films were dewetted using a continuous wave (CW) laser with a wavelength of 1070 nm and various settings of the laser power, duty cycle, and speed, respectively. The results showed that nanoparticles were produced for accumulated energies in the range of 0.1 ∼ 2.2 kJ/mm3. At lower unit volume energies (0.1 ∼ 1.3 kJ/mm3), the particles had a size of around 120 ∼ 130 nm. However, as the accumulated energy increased to 1.7 kJ/mm3, the particle size reduced to 95 nm. The AgCuAl films produced using a duty cycle of 30 % showed an optical absorption peak wavelength in the range of 600 ∼ 620 nm. Moreover, a blue shift was observed as the laser power increased as a result of the smaller particle size. AgCuAl nanoparticles (NPs) show a strong Raman scattering effect at 680 cm−1 in the presence of melamine solution. Hence, the feasibility of detecting melamine via surface-enhanced Raman spectroscopy was confirmed. [ABSTRACT FROM AUTHOR]

• Photoelectrochemical immunosensor for detection of cancer biomarker. • Organic semiconductor Y6 and gold nanoparticles were utilized as photoactive material. • ZnPO 4 nanoparticles with horseradish peroxidase embedded was used as signal probe. • Horseradish peroxidase catalyzed the formation of insulating film on electrode. • The insulating film resulted in suppression of photoelectrochemical current intensity. Photoelectrochemical (PEC) sensor was prepared for detection of cancer biomarker carcinoembryonic antigen (CEA), which is strongly associated with diagnosis and prognosis of different cancer. Organic semiconductor Y6 combined with gold nanoparticles (Au NPs) formed organic–inorganic heterojunction and the heterojunction was utilized as photoactive material. ZnPO 4 nanoparticles with horseradish peroxidase (HRP) embedded inside the nanoparticle and antibody absorbed on nanoparticle surface were synthesized and utilized as signal probe. After formation of sandwich structure on electrode surface, HRP can catalyze 3,3′-dimethoxybenzidine (DB) in solution to form insulating polymer film, poly(3,3′-dimethoxybenzidine) (PDB) onto the electrode surface. The formed PDB film on electrode surface resulted in the suppression of PEC current intensity, achieving sensitive and selective detection of CEA with linear range from 1 pg/mL to 1 ng/mL and limit of detection of 0.5 pg/mL. [ABSTRACT FROM AUTHOR]

Plant extracts contain sources of antimicrobial and antioxidant compounds that have been used as a reducing and stabilizing agents for biosynthesis of nanoparticles (NPs). Some studies suggest that plant extracts incorporating directed NPs, such as Ag, enhanced antioxidant activity, this study suggests the opposite. Red cabbage extract with silver NPs (Ag NPs) was prepared to study and how silver ions (Ag+) and Ag NPs influence antioxidant activity of red cabbage anthocyanin. Synthesized Ag NPs were characterized by UV–vis spectra, scanning electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDX). We studied Ag NPs formation as a function of Ag+ and anthocyanin concentrations. Results show that Ag+ and Ag NPs decreased antioxidant activity of anthocyanin towards DPPH. [ABSTRACT FROM AUTHOR]

A facile route to fabricate carbon nanorods and their enhanced hydrogen storage performance were reported. The nanorods exhibit packing structure with different orientations having diameter of about 33 nm. The synthesized nanorods show excellent hydrogen storage properties (7169 µmol g −1 ) compared with that of commercial carbon (2564 µmol g −1 ). Thus, the simple synthesis process and the enhanced hydrogen storage capacity of carbon nanorods shed light on the utilization of structured carbon as an efficient hydrogen storage material. [ABSTRACT FROM AUTHOR]

A conceptually new strategy has been developed for the deposition of Ag nanoparticles (AgNp) on multiwalled carbon nanotubes (MWCNT). The approach was based on the dispersion of MWCNT using cetylpyridinium chloride (CC), reaction with potassium borohydride (KBH 4 ) and synthesis of uniform cetylpyridinium borohydride (CBH 4 ) coatings on MWCNT. The CBH 4 coating material provided good suspension stability and served as a reducing agent and a template for controlled Ag + reduction and synthesis of AgNp. The AgNp-MWCNT hybrid material showed a high electrocatalytic activity towards the reduction of hydrogen peroxide, which was ascribed to the uniform dispersion of AgNp on MWCNT surface. The method offers a versatile strategy for the synthesis and assembly of other nanomaterials on MWCNT. [ABSTRACT FROM AUTHOR]

Photocatalysts have been increasingly applied in many fields, and it is desirable to enhance their self-cleaning functions against fouling matter deposited on the photocatalyst layer. Herein, we propose the nanoparticle-microprinting method to fabricate a microstructured photocatalyst layer using a TiO 2 nanoparticle suspension and silicone rubber stamp. The sintering of TiO 2 nanoparticles was performed at 600°C without causing the crystal phase to change from anatase to rutile. We demonstrated the fabrication process by producing a micropillar TiO 2 array layer. Since the silicone rubber stamp is flexible, the proposed technique is expected to be applicable for the fabrication of microstructures on curved surfaces. [ABSTRACT FROM AUTHOR]

Hyperbranched aromatic-aliphatic polyester HBPE-BBA was synthesized by modifying the periphery of a second-generation hyperbranched polyester (HBPE) with benzimidazole (BBA) end groups. HBPE-BBA showed interesting self-assembly behaviors, and retained one-dimensional nano bead-on-string fibers and two-dimensional helical nanocoil morphologies in different solvents. The fluorescence results indicated that HBPE-BBA exhibited remarkable selectivity for Fe 3+ and fused ring compounds. [ABSTRACT FROM AUTHOR]

Ga-doped zinc oxide (GZO) nano-triangle arrays with different doping concentration and sizes were fabricated by nanosphere lithography (NSL) and pulsed laser deposition (PLD) techniques, using GZO targets and polystyrene (PS) spheres. The influences of doping concentration on band gap and optical properties were investigated using ultraviolet-visible spectra and Fourier transform infrared (FTIR) spectra. The surface plasmonic resonance (SPR) peaks of the GZO nano-triangle arrays could be tuned in infrared region by changing the doping concentration. The surface-enhanced infrared spectroscopy (SEIRS) experiments of polymethyl methacrylate (PMMA) films on GZO nano-triangle arrays indicated that the absorption peaks of the PMMA overlapped with the SPR peaks of GZO nano-triangle arrays (on-resonance) could be enhanced. However, the off-resonance peaks of the PMMA could not be enhanced. [ABSTRACT FROM AUTHOR]

In this work we report the synthesis, the microstructural characterization and the magnetic properties of neodymium spinel ferrites doped with transition metal (Co, Ni, Mn) nanoparticles prepared by co-precipitation method. The effect of different doping elements (Cobalt, Nickel and Manganese) on the structural and magnetic properties was studied. The Nd 0.5 Ni 0.5 Fe 2 O 4 and Nd 0.5 Mn 0.5 Fe 2 O 4 nanoparticles prepared possess superparamagnetic phases; however the Nd 0.5 Co 0.5 Fe 2 O 4 nanoparticles have a ferrimagnetic phase. The observed saturation magnetization and the remanent magnetization values of Nd 0,5 Co 0,5 Fe 2 O 4 , Nd 0,5 Ni 0,5 Fe 2 O 4 and Nd 0,5 Mn 0,5 Fe 2 O 4 are higher than NdFe 2 O 4 . Moreover, the coercive field for Ni-Nd ferrite and Mn-Nd ferrite are lower than that observed for NdFe 2 O 4 . In this work, the coercive field for Co-Nd ferrite is higher than that obtained for NdFe 2 O 4 . [ABSTRACT FROM AUTHOR]

Cadmium selenide (CdSe) nanoparticles (NPs) were first synthesized in the cavity of recombinant cage-shaped protein from marine pennate diatoms. Our constructed recombinant apoferritin (FerA-dCys) from the diatoms revealed that the removal of cysteine residues on the surface of the recombinant apoferritin enhanced the CdSe NPs synthesis in the apoferritin cavity. The CdSe NPs were synthesized in the FerA-dCys with a very low concentration of cadmium ions (0.02 mM). The core formation ratio of CdSe NPs showed more than 20%. The average diameter of synthesized CdSe NPs was 7 nm with a small size distribution. The synthesized NPs were analyzed by energy-dispersive X-ray spectroscopy (EDX) and high-resolution transmission electron microscopy (HR-TEM), and it was confirmed that the synthesized NPs in the FerA-dCys were consistent with Cd and Se ions. [ABSTRACT FROM AUTHOR]