This work reports the thinnest and smallest hollow N-doped carbon boxes among recently reported hollow N-doped carbon materials. Hollow and N-rich microporous organic networks (H-NMONs) were prepared by the azide–alkyne Huisgen cycloaddition of tetra­(4-ethynyl­phenyl)­methane and 1,4-diazido­benzene on the surface of Cu2O nanocubes and the successive acid etching of inner Cu2O. The Cu2O nanocubes played roles of templates and networking catalysts. The networking reaction generated N-rich triazole rings in the MON. Heat treatment of H-NMONs under argon resulted in the formation of hollow N-doped carbon boxes (H-NCBs). The diameter and shell thickness of H-NCBs were 130 and 12 nm, respectively. The H-NCBs showed superior electrochemical performance in H2SO4 electrolyte as energy storage materials for supercapacitors, compared with that in KOH electrolyte. Among the H-NCBs, H-NCB-900 which was obtained by the heat treatment of H-NMON at 900 °C showed the best performance with capacitances of 286 and 251 F/g at current densities of 1 and 10 A/g in two electrode coin cell type supercapacitors and maintained the capacitances of 228 and 206 F/g at higher current densities of 50 and 100 A/g. Moreover, the H-NCB-900 showed excellent cycling stabilities with ∼95% retention of the first capacitance after 10 000 cycles. The excellent electrochemical performance of H-NCBs can be attributed to their efficient N-doping, hollow structure, and thin thickness of shells.

Samsung has launched a 70-inch Full HD (1920X1080) LCD-TV panel which, on a commercial basis, is the world's largest size so far. This size is the maximum that can be achieved using a single polarizer sheet. Its features include 600 nits luminance, dynamic control using LED local dimming, 100,000:1 contrast ratio, and a color gamut of 105%. Also, it is the world's first high speed FHD 120Hz frame rate panel, accompanied by a newly developed pixel structure and driving scheme. This totally new driving method concept includes an alternative pixel structure developed from the 1G-2D cell structure that we announced last year. Also, new product and design technology, optimized for larger sized LCD-TV products, was adopted. This technology overcomes severe charging margin requirements, enabling manufacturability and high quality in 46", 52", 57", 70").

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Wilson's disease is a rare genetic disorder that has abnormal copper metabolism. Although the disease's main problems are found in liver and brain, some studies revealed manifestation of various musculoskeletal problems in the patients. In this report, we encountered a young patient who had fracture in the forearm bone. Initially, exception to a previous history of fracture from a motorcycle accident, the patient did not have any medical or drug use history, and laboratory work-ups were insignificant. However, with suspicion on his bone's integrity, bone densitometry was recommended and revealed osteopenic change. To disclose a cause for the change, questions were made to recall any particular history or event, and his complaint of recent vision loss led to ophthalmologic consultation where under slit-lamp test found Kayser-Fleischer ring. Further laboratory work-up found low levels of serum copper and ceruloplasmin and high copper level in 24-hr urine sample that led to the diagnosis of Wilson's disease. Although Wilson's disease has been frequently noticed with considerable musculoskeletal manifestation, it rarity makes the diagnosis illusive to a physician. Hence, despite of its rarity, it is imperative to remember the disease's bony manifestation, and it should be suspected in young patients with demineralized bone when the reason for brittle bone cannot be answered with other better known conditions.