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    Transformer-like Carbon Nanostructure engineered

    June 11, 2017, Categories  Chemistry/Nanotechnology

    1. Hybrid carbon nanosheets (CNSs) in different solvents of varying polarity. 2. Synthesis and optical properties of hybrid carbon nanosheets (CNSs).

    1. Hybrid carbon nanosheets (CNSs) in different solvents of varying polarity.
    2. Synthesis and optical properties of hybrid carbon nanosheets (CNSs).

    A recent study, affiliated with UNIST has engineered a new type of carbon nanomaterials, capable of changing shapes and colors depending on the type of solvents used. Such materials have attracted much attention owing to their unique optical properties and structures. In the study, the joint research team, led by Professor Byung Soo kim and Professor Oh Hoon Kwon has presented a unique design and synthesis of hybrid carbon nanosheets (CNSs), which show a strong solvatochromic behavior with wide color tunability ranging from blue to orange and even to white in various solvents.

    This unique hybrid CNS hosts clusters of carbon nanorings on the su...

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    Very Rare Discovery: Failed Star Orbits a Dead Star every 71 minutes

    June 11, 2017, Categories  Astronomy/Space

    K2 lightcurve (black jagged curve) folded about a period of 71.23 minutes. The red curve represents a simple geometrical model with a 5-minute long total eclipse and a 9% contribution to emulate an illumination effect on the companion star. The blue curve is the fit to the model based on the length of the K2 observations. Credit: Bishop's University

    1. K2 lightcurve (black jagged curve) folded about a period of 71.23 minutes. The red curve represents a simple geometrical model with a 5-minute long total eclipse and a 9% contribution to emulate an illumination effect on the companion star. The blue curve is the fit to the model based on the length of the K2 observations. 2. The final fate of WD1202 as a cataclysmic variable. The brown dwarf overflows its tear-drop-shaped Roche lobe and loses mass to the compact white dwarf accretor An accretion disk of hot hydrogen gas surrounds the white dwarf. Credit: Bishop’s University

    An international team using data from the rejuvenated Kepler space telescope have discovered a rare gem: A binary system consisting of a failed star, also known as a brown dwarf, and the remnant of a dead star known ...

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    Hubble Applauds Waltzing Dwarfs

    June 11, 2017, Categories  Astronomy/Space

    The image is a stack of 12 images made over the course of three years with the NASA/ESA Hubble Space Telescope. Using high-precision astrometry, an Italian-led team of astronomers tracked the two components of the system as they moved both across the sky and around each other. Credit: ESA/Hubble & NASA, L. Bedin et al.

    The image is a stack of 12 images made over the course of three years with the NASA/ESA Hubble Space Telescope. Using high-precision astrometry, an Italian-led team of astronomers tracked the two components of the system as they moved both across the sky and around each other. Credit: ESA/Hubble & NASA, L. Bedin et al.

    This seemingly unspectacular series of dots with varying distances between them actually shows the slow waltz of two brown dwarfs. The image is a stack of 12 images made over the course of 3 years with the Hubble Space Telescope. Using high-precision astrometry, an Italian-led team of astronomers tracked the two components of the system as they moved both across the sky and around each other.

    The observed system, Luhman 16AB, is only about 6 light-years away and is the third...

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    Distinct Wiring mode found in Chandelier Cells

    June 10, 2017, Categories  Health/Medical, Biology/Biotechnology

    AIS but not off-target varicosities predominantly contain presynaptic markers. A, Immunohistochemical analysis of VGAT localization in ChC varicosities in Nkx2.1-CreER;LSL-tGFP mice. Confocal images of a single optical section showing varicosities (green), VGAT (red), and AISs visualized by AnkG immunostaining (blue) in a P16 brain. White and yellow arrowheads indicate AIS and off-target varicosities, respectively. Filled and empty arrowheads show VGAT+ and VGAT- varicosities in ChC axons, respectively. Scale bar, 5 μm. B, The average percentage of VGAT-containing AIS and off-target varicosities in P16 ChCs. The percentage of VGAT-containing AIS varicosities is significantly higher than that of VGAT-containing off-target varicosities (n = 7 ChCs for each; ≥3 brains per condition; Student’s t test: **p < 0.001)h. Data are presented as mean ± SEM. C, Localization of Syp-YFP puncta in varicosities of transplanted ChCs. Confocal images of a single optical section showing AIS visualized by AnkG immunostaining (blue), Syp-YFP (green), and varicosities along the axon (red) in an EP16 brain. White and yellow arrowheads indicate AIS and off-target varicosities, respectively. Filled and empty arrowheads show Syp-YFP+ and Syp-YFP- varicosities in ChC axons, respectively. Scale bar, 5 μm. D, The average percentage of Syp-YFP-containing AIS and off-target varicosities in EP16 ChCs. The percentage of Syp-YFP containing AIS varicosities is significantly higher than that of Syp-YFP containing off-target varicosities (n = 6 ChCs; ≥3 brains; Student’s t test: ***p < 0.001)l. Data are presented as mean ± SEM. E, The average percentage of VGAT-containing AIS and off-target varicosities in P28 ChCs. The percentage of VGAT-containing AIS varicosities is significantly higher than that of VGAT-containing off-target varicosities (n = 7 ChCs for each; ≥3 brains per condition; Student’s t test: ***p < 0.001)°. Data are presented as mean ± SEM.

    AIS but not off-target varicosities predominantly contain presynaptic markers. A, Immunohistochemical analysis of VGAT localization in ChC varicosities in Nkx2.1-CreER;LSL-tGFP mice. Confocal images of a single optical section showing varicosities (green), VGAT (red), and AISs visualized by AnkG immunostaining (blue) in a P16 brain. White and yellow arrowheads indicate AIS and off-target varicosities, respectively. Filled and empty arrowheads show VGAT+ and VGAT- varicosities in ChC axons, respectively. Scale bar, 5 μm. B, The average percentage of VGAT-containing AIS and off-target varicosities in P16 ChCs...

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