Reviving the "Schottky" Barrier for Flexible Polymer Dielectrics with a Superior 2D Nanoassembly Coating.

The organic insulator-metal interface is the most important junction in flexible electronics. The strong band offset of organic insulators over the Fermi level of electrodes should theoretically impart a sufficient impediment for charge injection known as the Schottky barrier. However, defect formation through Anderson localization due to topological disorder in polymers leads to reduced barriers and hence cumbersome devices.

Structural Changes and Reversibility Upon Deintercalation of Li from LiCoPO Derivatives.

In an effort to improve the cycle life and rate capability of olivine LiCoPO, Cr, Fe, and Si were added to produce nominal LiCoFeCrSi(PO). This cathode material has an energy density comparable to LiCoPO, with markedly improved electrochemical performance. Here, we apply operando X-ray diffraction to gain an understanding of the crystallographic delithiation mechanism of this new substituted electrode material, compared to both LiCoFePO and LiCoFePO.

Telangiectasia Macularis Eruptiva Perstans: Report of Three Cases.

Telangiectasia macularis eruptiva perstans (TMEP) is a rare, heterogeneous disease of mast cell proliferation. The variable clinical presentation of TMEP, coupled with its rarity, makes the recognition and diagnosis of this disease difficult and challenging for clinicians. The histopathologic findings with hematoxylin and eosin staining that distinguish TMEP from a normal skin biopsy can be so subtle that confirmation of the diagnosis with additional special stains (c-Kit, Giemsa, toluidine blue) is strongly recommended.

Tenosynovial Giant Cell Tumor in the Dermis of the External Auditory Meatus.

A 26-year-old African American woman with a history of a recurring "oozing papule" in the right ear presented to the emergency department in July 2010 with a 2-month history of an enlarging, painful growth in the right ear canal. Physical examination revealed a 1-cm round cystic lesion along the right, anterior external auditory canal wall, just medial to the tragus. Initial diagnosis was an infected cyst of the external ear canal.

Hydroquinone-induced depigmentation: case report and review of the literature.

Melasma is an acquired cutaneous disorder caused by an overproduction of melanin by the enzyme tyrosinase. Melasma remains a therapeutic challenge and no definitive standard therapy exists. Although hydroquinone (HQ) has emerged as the most common treatment, its popularity has recently waned because of concerns about its potential carcinogenicity and manufacturing challenges.