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Highly efficient, simplified, solution-processed thermally activated delayed-fluorescence organic light-emitting diodes can be realized by using pure-organic thermally activated delayed fluorescence emitters and a multifunctional buffer hole-injection layer, in which high EQE (≈24%) and current efficiency (≈73 cd A(-1) ) are demonstrated. High-efficiency fluorescence red-emitting and blue-emitting devices can also be fabricated in this manner.

A versatile metal nanowiring platform enables the fabrication of Ag nanowires (AgNW) at a desired position and orientation in an individually controlled manner. A printed, flexible AgNW has a diameter of 695 nm, a resistivity of 5.7 μΩ cm, and good thermal stability in air. Based on an Ag nanowiring platform, an all-NW transistors array, as well as various optoelectronic applications, are successfully demonstrated.

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Organic optoelectronic devices including organic light‐emitting diodes (OLEDs) and polymer solar cells (PSCs) have many advantages, including low‐cost, mechanical flexibility, and amenability to large‐area fabrication based on printing techniques, and have therefore attracted attention as next‐generation flexible optoelectronic devices. Although almost 100% internal quantum efficiency of OLEDs has been achieved by using phosphorescent emitters and optimizing device structures, the external quantum efficiency (EQE) of OLEDs is still limited due to poor light extraction. Also, although intensive efforts to develop new conjugated polymers and device architectures have improved power conversion efficiency (PCE) up to 8%–9%, device efficiency must be improved to >10% for commercialization of PSCs. The surface plasmon resonance (SPR) effect of metal nanoparticles (NPs) can be an effective way to improve the extraction of light produced by decay of excitons in the emission layer and by absorption of incident light energy within the active layer. Silver (Ag) NPs are promising plasmonic materials due to a strong SPR peak and light‐scattering effect. In this review, different SPR properties of Ag NPs are introduced as a function of size, shape, and surrounding matrix, and review recent progress on application of the SPR effect of AgNPs to OLEDs and PSCs.

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A individually position-addressable large-scale-aligned Cu nanofiber (NF) array is fabricated using electro-hydrodynamic nanowire printing. The printed single-stranded Cu NF has a diameter of about 710 nm and resistivity of 14.1 μΩ cm and is effectively used as source/drain nanoelectrode in pentacene transistors, which show a 25-fold increased hole mobility than that of a device with Cu thin-film electrodes.

ABSTRACT. A nine-month-old domestic short haired cat was admitted with the history of acute vomiting, depression and shivering. Abdominal ultrasonography revealed minimum enlargement of the right uterine horn filled with anechoic fluid. On excretory urography, functionally and anatomically normal, enlarged left kidney was found, but right kidney was absent. It was preliminary diagnosed as hydrometra with right renal agenesis. Aiming at the correction of hydrometra, we performed ovariohysterectomy. During spaying, we found a missing segment of distal part of the right uterine horn and absence of ipsilateral kidney and ureter. Compressed uterine structure and segmental aplasia of right uterine horn were found in histopathological investigation. Taken together, it was diagnosed as a segmental aplasia of uterine horn with ipsilateral renal agenesis. KEY WORDS: feline, renal agenesis, uterine segmental aplasia.J. Vet. Med. Sci. 70(6): 641-643, 2008 A nine-month-old, intact female, domestic short haired cat was admitted with the history of acute vomiting, depression and shivering for three days. The rise of temperature (40°C) was recorded, and there was azotemia (BUN: 74.0 mg/dl, creatinine: 4.5 mg/dl) on the routine blood screening test. Abdominal radiography showed absence of the right kidney, while the left one was enlarged (3.2 × length of the 2nd lumbar vertebra). Incidentally, there was unilateral sacralization of the 7th lumbar vertebra with articulation between right transverse process and the ilium at same side. Abdominal ultrasonography demonstrated minimum enlargement of the right uterine horn (12.5 mm in diameter) filled with anechoic fluid. Excretory urography revealed the normal shape and opacification pattern of the left kidney meaning the normal physiological activities, however, the right kidney was absent (Fig. 1). In spite of unknown causes of azotemia, this patient was recovered through 2 days supportive treatment including fluid therapy and diuretics, and then received ovariohysterectomy under general anesthesia to prevent further deterioration of the uterine horn. Surprisingly, there were no the distal part of the right uterine horn, the right kidney and the right ureter during surgery (Fig. 2A). The remnant of the right uterine horn was tortuous and dilated with fluid, and was not connected to the body of the uterus. The left uterine horn was intact and there was a small notch as vestige at the body of uterus (Fig. 2B). Gross and histopathologic examination revealed that both ovaries, fallopian tubes and the left uterine horn were normal (Fig. 3A-C There is unilateral sacralization of the 7th lumbar vertebra with articulation between right transverse process and the ilium at same side (arrow).