Osteitis Condensans Illi - An overlooked cause of low back pain mimicking sacroiliitis.

Osteitis Condensans Illi (OCI) is an underrecognized cause of low back pain involving iliac bones with relative sparing of sacroiliac joint. We present a case of 48-year-old female who was diagnosed as a case of OCI after having back symptoms for 4 years.

Suppressed phase separation of mixed-halide perovskites confined in endotaxial matrices.

The functionality and performance of a semiconductor is determined by its bandgap. Alloying, as for instance in InGaN, has been a mainstream strategy for tuning the bandgap. Keeping the semiconductor alloys in the miscibility gap (being homogeneous), however, is non-trivial.

Excess Electron and Hole in 1-Benzylpyridinium-Based Ionic Liquids.

The study of ionic liquids that may be compatible with the type of radiation chemistry events occurring in nuclear separation processes is a topic of high current interest. In this article, we focus on two ionic liquids based on the benzylpyridinium cation. This cation has been proposed to be able to capture either an excess electron or hole without undergoing fast dissociation.

Comparison of the Structural Response to Pressure of Ionic Liquids with Ether and Alkyl Functionalities.

The response of ionic liquids to external perturbations including elevated pressure is a topic of current interest for applications such as tribology. Ionic liquids come in many classes, including those that are amphiphilic and some that are mostly polar having either cationic or anionic tails that are functionalized. The current study compares the effect of elevated pressure on two ionic liquids with different types of cationic tail.

Structure of cyano-anion ionic liquids: X-ray scattering and simulations.

Ionic liquids with cyano anions have long been used because of their unique combination of low-melting temperatures, reduced viscosities, and increased conductivities. Recently we have shown that cyano anions in ionic liquids are particularly interesting for their potential use as electron donors to excited state photo-acceptors [B. Wu et al.

Unlocking the Origin of Superior Performance of a Si-Ge Core-Shell Nanowire Quantum Dot Field Effect Transistor.

The sustained advancement in semiconducting core-shell nanowire technology has unlocked a tantalizing route for making next generation field effect transistor (FET). Understanding how to control carrier mobility of these nanowire channels by applying a gate field is the key to developing a high performance FET. Herein, we have identified the switching mechanism responsible for the superior performance of a Si-Ge core-shell nanowire quantum dot FET over its homogeneous Si counterpart.

BODIPY-Based Fluorescent Probes for Sensing Protein Surface-Hydrophobicity.

Mapping surface hydrophobic interactions in proteins is key to understanding molecular recognition, biological functions, and is central to many protein misfolding diseases. Herein, we report synthesis and application of new BODIPY-based hydrophobic sensors (HPsensors) that are stable and highly fluorescent for pH values ranging from 7.0 to 9.

Boron nitride nanotubes for spintronics.

With the end of Moore's law in sight, researchers are in search of an alternative approach to manipulate information. Spintronics or spin-based electronics, which uses the spin state of electrons to store, process and communicate information, offers exciting opportunities to sustain the current growth in the information industry. For example, the discovery of the giant magneto resistance (GMR) effect, which provides the foundation behind modern high density data storage devices, is an important success story of spintronics; GMR-based sensors have wide applications, ranging from automotive industry to biology.

Fluorinated boron nitride nanotube quantum dots: a spin filter.

Spin filtering requires a selective transmission of spin-polarized carriers. A perfect spin filter allows all majority (or minority) spin carriers to pass through a channel while blocking the minority (or majority) carriers. The quest for a novel low-dimensional metal-free magnetic material that would exhibit magnetism at a higher temperature with an excellent spin filtering property has been intensively pursued.

Electrical tuning of spin current in a boron nitride nanotube quantum dot.

Controlling spin current and magnetic exchange coupling by applying an electric field and achieving high spin injection efficiency at the same time in a nanostructure coupled to ferromagnetic electrodes have been the outstanding challenges in nanoscale spintronics. A relentless quest is going on to find new low-dimensional materials with tunable spin dependent properties to address these challenges. Herein, we predict, from first-principles, the transverse-electric-field induced switching in the sign of exchange coupling and tunnel magneto-resistance in a boron nitride nanotube quantum dot attached to ferromagnetic nickel contacts.