Current Nanoscience - Volume 9, Issue 4, 2013

As the masterpiece of polymer science, biopolymers are among new and exciting areas of research. Apart from their unique physical and chemical properties which make them suitable for different applications, they are widely known as biocompatible, biodegradable and usually nontoxic polymers. Innovating biopolymer products by employing novel production processes such as electrospinning, which is an efficient metho Read More

Nanoparticles of lyotropic liquid crystals loaded with a new photosensitizer (a chlorin derivative) were developed for use in photodynamic therapy (PDT). These systems were characterized by spectrofluorimetric, dynamic light scattering, and small angle X-ray diffraction (SAXRD) analyses. In vitro and in vivo penetration studies in animal models were performed using animal model membranes. The systems had a particle size Read More

In this study, multiwall carbon nanotubes (MWNTs) were modified and functionalized with Amantadine, Pregabalin and Alendronate. We investigated the formation of three anti cancer agents, functionalization on MWNTs, in addition to developing the amidation of MWNTs with amines. Functionalized carbon nanotubes were characterized by Fourier transform infrared (FT-IR), Raman, transmission electron microscopy (T Read More

Dry powder inhalers offer many advantages in the management, prevention and treatment of various respiratory diseases and also with tumors associated with lungs. The present study investigated the feasibility of formulating Cisplatin loaded Gelatin nanoparticles as colloidal drug carriers and converting them into dry powders by coating with inhalable lactose by freeze drying. The average particle size of Cisplatin gelatin n Read More

Alpha-fetoprotein (α-FP, AFP) was the only serological marker currently available for the detection of hepatocellular carcinoma (HCC). As a novel biological luminescent label, the favorable properties of water-soluble CdTe quantum dots (QDs) have advantages over conventional fluorescent materials. Meantime, the magnetic separation technique has widely been applied to various aspects in biotechnology in recent years. In Read More

The present study deals with the green synthesis of silver nanoparticles (AgNPs) using Citrus reticulata juice as the reducing agent. The reaction carried out at room temperature (25°C) and at 55°C. The AgNPs were characterized by UV-Vis, TEM, XRD, AFM and FTIR measurements. The produced AgNPs were also evaluated for their increased antibacterial activities with tetracycline and penicillin against Gram-positive and Read More

Selenium is known to have cytoprotective role, which is important especially in reducing mortality due to cancer, a leading cause of death worldwide. The present work addresses synthesis and evaluation of selenium nanoparticles (SeNPs) as therapeutic alternative to conventional chemotherapeutic agents. Selenium nanoparticles were synthesized by an eco friendly method using whole cells of Saccharomyces boul Read More

Zinc oxide nanomaterials have sought considerable biomedical applications. The varying grain sizes of zinc oxide nanoparticles (ZnO NPs) were prepared by wet chemical precipitation method. Particle size and morphology of the as-prepared ZnO powders were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV-Visible spectroscopy, dynamic light scattering and transmission ele Read More

Cotton is a widely used raw material for textiles but drawbacks regarding their poor mechanical properties often limit their applications as functional materials. The present investigation involved process development for one step coating of cotton with silver nanoparticles (SNP) synthesized using Azadirachta indica and Citrus limon extract to develop functional textiles. Addition of starch to functional textiles led to Read More

PVA/PAA/PEG/PVP nanofibers with HPMC and aloe vera were fabricated by electrospinning method. HPMC was added to the hybrid polymer solution as the water retention agent and aloe vera which are known over centuries were also added to the system to promote the healing of wounded or infected skin. The fabricated nanofiber mats were characterized using SEM, DSC, and FT-IR. SEM Images exhibited that the electrospun Read More

We have prepared different sizes of CdSe nanoparticles with different amounts of capping molecules on their surface. Through Colloidal method, the nanoparticles were prepared using different starting precursors and different ratios of the starting reagents. We have characterized the prepared nanoparticles by Energy dispersive X-ray (EDX), X-ray diffraction (XRD), UV-Vis optical absorption, infrared spectroscopy and th Read More

A comparison of the performance of some specific topological indices was conducted. The study was concentrated on determining which topological indices are included in the best linear correlation models constructed for modeling the total energy of zig-zag nanotubes. The normalization of some particular widely used topological indices such as the Wiener index, Shultz index, hyper Wiener index, Harary inde Read More

In the backdrop of probabilistic computing defining the landscape of nanoscale digital logic circuits, a combinational circuit is usually specified in terms of a set of fully connected variable nodes called the ‘clique’. The clique energy or clique potential is an indicator of correct circuit operation under the premise of non-deterministic nature of device parameters at nanoscale dimensions. Also, the clique potential forms an import Read More

The electrical, electronic and optical properties of multilayer graphene (MLG) films have been investigated systematically using a 4-point probe method, ultraviolet photoelectron spectroscopy, and ultraviolet/visible spectrometer. Monolayer graphene and MLG (2, 3, 4 and 5 layers) films were prepared on glass and SiO2 substrates using a chemical vapor deposition and multi-transfer process. Raman spectroscopy was used to Read More

In the present work, the effect of chirality on the resonant behavior of the single walled boron nitride nanotube (SWBNNT) based on nanomechanical resonator has been reported. The structural molecular mechanics based on finite element model has been developed to simulate the different chiralities of the SWBNNTs. The cantilevered configuration of SWBNNT is considered to analyze the resonant behavior of th Read More

Tin doped antimony sulfide thin films have been grown on glass substrates at room temperature by vacuum thermal evaporation method. The doping was carried out during the growth by two source method with the aim to investigate its effects on electrical, structural and optical properties of 1, 2 and 3 wt.% Sn-doped Sb2S3 thin films. Using transmission spectra in the range of 200-1800 nm, the absorption coefficient of the Read More

In this paper new glutamic acid diethyl ester imide derivatives with different alkyl substituent chains were designed and synthesized. Their gelation behaviors in 21 solvents were tested as novel low-molecular-mass organic gelators. It was shown that the length of alkyl substituent chains linked to benzene ring in gelators played a crucial role in the gelation behavior of all compounds in various organic solvents. Longer alkyl chains i Read More

20nm SiNWs transducers have been fabricated by means of simple in-house fabrication method. A low cost, simple top-down approach has been successfully used for the fabrication of very sensitive SiNWs. The fabrication was done without using costly deep reactive ion etching (DRIE) or reactive ion etching (RIE). The process started by patterning wire marked through photoresist and the marked resist was deepened into Read More

M-type lead hexaferrites with compositions of PbFe12O19 and PbSnZnFe10O19 were synthesized by the citrate sol–gel method. The structural and magnetic properties of resultant particles were investigated by X-ray diffraction (XRD), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and vector network analyzer. The magnetic properties such as saturation magnetization (Ms) and coercivity (Hc) Read More