Received January 7, 2011; Revised April 19, 2011 The Bilbao Crystallographic Server is a web site with crystallographic databases and programs available online (www.cryst.ehu.es). It has been operating for more than ten years and new applications are being added regularly. The programs available on the server do not need a local installation and can be used free of charge. The server gives access to general information related to crystallographic symmetry groups (generators, general and special positions, maximal subgroups, Brillouin zones, etc.). Apart from the simple tools for retrieving the stored data, there are programs for the analysis of group-subgroup relations between space groups. There are also software package studying specific problems of solid-state physics, structural chemistry and crystallography.

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Crystallography online by the Bilbao Crystallographic Server

Influence of Ca doping on ZnFe2O4 nanoparticles magnetic hyperthermia and cytotoxicity study

A comparative study of spinel ZnFe2O4 ferrites obtained via a hydrothermal and a ceramic route: Structural and magnetic properties

Nanomedicine is a speedily growing area of medical research that is focused on developing nanomaterials for the prevention, diagnosis, and treatment of diseases. Nanomaterials with unique physicochemical properties have recently attracted a lot of attention since they offer a lot of potential in biomedical research. Novel generations of engineered nanostructures, also known as designed and functionalized nanomaterials, have opened up new possibilities in the applications of biomedical approaches such as biological imaging, biomolecular sensing, medical devices, drug delivery, and therapy. Polymers, natural biomolecules, or synthetic ligands can interact physically or chemically with nanomaterials to functionalize them for targeted uses. This paper reviews current research in nanotechnology, with a focus on nanomaterial functionalization for medical applications. Firstly, a brief overview of the different types of nanomaterials and the strategies for their surface functionalization is offered. Secondly, different types of functionalized nanomaterials are reviewed. Then, their potential cytotoxicity and cost-effectiveness are discussed. Finally, their use in diverse fields is examined in detail, including cancer treatment, tissue engineering, drug/gene delivery, and medical implants.

/pdf/surface-engineering-of-nanomaterials-with-polymers-3jxdht6w.pdf

Surface Engineering of Nanomaterials with Polymers, Biomolecules, and Small Ligands for Nanomedicine

Role of Ferrite Nanoparticles in Hyperthermia Applications

Effect of surface functionalization on the heating efficiency of magnetite nanoclusters for hyperthermia application

Ab initio study of electronic structure and enhancement of magnetocrystalline anisotropy in MnFe2O4 for permanent magnet application

The normal spinel MnFe2O4 is investigated employing density functional theory calculations using the generalized gradient approximation approach. Here, we address the effect of volume strain on the electronic and magnetic properties of MnFe2O4. We give special emphasis on the strain-induced effect in the magnetocrystalline anisotropy energy (MAE). We observe that compressive strain reduces the magnitude of MAE and leading toward uniaxial symmetry, whereas extensive strain favors planar anisotropy. The site-decomposed orbital anisotropy indicates that B-site atoms largely contribute to the MAE than the A-site atoms. Combined with its half-metallicity and tunable MAE, our results imply a wide range of scientific and technological applications.

Riyajul Islam

Papers

Effect of surface functionalization on the heating efficiency of magnetite nanoclusters for hyperthermia application

Ab initio study of electronic structure and enhancement of magnetocrystalline anisotropy in MnFe2O4 for permanent magnet application

Strain-Induced Electronic Structure and Magnetocrystalline Anisotropy Energy in MnFe 2 O 4 From First-Principles Calculations