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  • 陳貴賢 博士
    NATURE COMMUNICATIONS (DOI: 10.1038/s41467-017-02547-4, 2018)
    Carbon-doped SnS2 (SnS2-C) metal dichalcogenide nanostructure has been synthesized using a hydrothermal technique, which exhibits a highly active and selective photocatalytic conversion of CO2 to hydrocarbons under visible-light, attaining a photochemical quantum efficiency of above 0.7%. The SnS2 -C photocatalyst represents an important contribution towards high quantum efficiency artificial photosynthesis based on gas phase photocatalytic CO2 reduction under visible light.
  • 劉國平 博士
    Nature Chemistry, 9, 1175-1180 (2017).
    The transition state, which gates and modulates the reactive flux, serves as the central concept in our understanding of activated reactions. The barrier height of the transition state can be estimated from the activation energy taken from thermal kinetics data or from the energetic threshold in the measured excitation function (the dependence of reaction cross sections on initial collision energies). However, another critical and equally important property, the angle-dependent barrier to reaction, has not yet been amenable to experimental determination until now. Here, using the benchmark reaction of Cl + CHD3(v1 = 1) as an example, we show how to map this anisotropic property of the transition state as a function of collision energy from the preferred reactant bond alignment of the backward-scattered products ‒ the imprints of small  ...
  • 陳應誠 博士
    Phys. Rev. Lett. 120, 183602 (2018).
    Quantum memory is a device that can store and then retrieve a quantum state on demand. It is an important building block in long-distance quantum communication. To outperform the direct transmission of photons with quantum repeaters, it is crucial to develop quantum memories with high fidelity, high efficiency and a long storage time. We achieved a storage efficiency of 92.0 % for a coherent optical memory based on the electromagnetically induced transparency scheme in optically dense cold atomic media. We also obtain a useful time-bandwidth product of 1200, considering only storage where the retrieval efficiency remains above 50 %. Both are the best record to date in all kinds of the schemes for the realization of optical memory. Our work significantly advances the pursuit of a high-performance optical memory and should have important applications ...
  • 楊大衍 博士
    Scientific Reports 7, 39792 (2017).
    Proteins are of interest in nano-bio electronic devices due to their versatile structures, exquisite functionality and specificity. However, quantum transport measurements produce conflicting results due to technical limitations whereby it is difficult to precisely determine molecular orientation, the nature of the moieties, the presence of the surroundings and the temperature; in such circumstances a better understanding of the protein electron transfer (ET) pathway and the mechanism remains a considerable challenge. Here, we report an approach to mechanically drive polypeptide flip-flop motion to achieve a logic gate with ON and OFF states during protein ET. We have calculated the transmission spectra of the peptide-based molecular junctions and observed the hallmarks of electrical current and conductance. The results indicate that peptide ET fol ...
  • 謝佳龍 博士
    ACS Nano, 11(3), 2575–2585 (2017).
    Viral infection starts with a virus particle landing on a cell surface followed by penetration of the plasma membrane. Due to the difficulty of measuring the rapid motion of small-sized virus particles on the membrane, little is known about how a virus particle reaches an endocytic site after landing at a random location. Here, we use coherent brightfield (COBRI) microscopy to investigate early-stage viral infection with ultrahigh spatiotemporal resolution. By detecting intrinsic scattered light via imaging-based interferometry, COBRI microscopy allows us to track the motion of a single vaccinia virus particle with nanometer spatial precision (< 3 nm) in 3D and microsecond temporal resolution (up to 100,000 frames per second). We explore the possibility of differentiating the virus signal from cell background based on their distinct spatial and  ...
  • 曾文碧 博士
    Chemistry A European Journal, 22, 4690-4694 (2016). (Frontispiece)
    Mass-analyzed threshold ionization spectra of jet-cooled [(h6-PhMe)(h6-PhH)Cr] and [(h6-Ph2)(h6-PhH)Cr] reveal with unprecedented accuracy the effects of methyl and phenyl groups on the electronic structure of bis(h6- benzene)chromium. These “pure” substituent effects allow quantitative experimental determination of the ionization energy changes caused by the mutual substituent influence in bisarene systems. Two types of such influence have been revealed for the first time in bis(h6-toluene)- chromium.
  • 高橋開人 博士
    Physical Chemistry Chemical Physics 19, 12075-12084 (2017).
    To gain an understanding of the substitution effect for the unimolecular reaction rate coefficients for Criegee intermediates (CIs), we performed ab initio calculations for CH2OO, CH3CHOO, (CH3)2COO, CH3CH2CHOO, CH2CHCHOO and CHCCHOO. The energies of the CIs, products and transition states were calculated with QCISD(T)/CBS//B3LYP/6-311+G(2d,2p), while the rate coefficients were calculated with anharmonic vibrational correction by using second order vibrational perturbation theory. It was found that for single bonded substitutions, the hydrogen transfer reaction dominates for the syn-conformers, while the OO bending reaction dominates for the anti-conformers. However once a double bond or a triple bond is added, the OO bending reaction dominates for both syn and anti-confor ...
  • 張煥正 博士
    Angew. Chem. Int. Ed. 56, 3025–3030 (2017).
    Much of the current understanding of thermal effects in biological systems is based on macroscopic measurements.  There is little knowledge about the local thermostability or heat tolerance of subcellular components at the nanoscale.  Herein, we show that gold nanorod-fluorescent nanodiamond (GNR-FND) hybrids are useful as a combined nanoheater-nanothermometer in living cells.  With the use of a 594 nm laser for both heating and probing, we measured the temperature changes by recording the spectral shifts of the zero-phonon lines of negatively charged nitrogen-vacancy centers in FNDs.  The technique allows us to determine the rupture temperatures of individual membrane nanotubes in human embryonic kidney cells, as well as to generate high temperature gradients on the cell membrane for photoporation and optically controlled hyper ...
  • 廖仲麒 博士
    Nature Communications, 9, 2023 (2018).
    Distal appendages (DAPs) are nanoscale, pinwheel-like structures protruding from the distal end of the centriole that mediate membrane docking during ciliogenesis, marking the cilia base around the ciliary gate. Here we determine a super-resolved multiplex of 16 centriole-distal-end components. Surprisingly, rather than pinwheels, intact DAPs exhibit a cone-shaped architecture with components filling the space between each pinwheel blade, a new structural element we term the distal appendage matrix (DAM). Specifically, CEP83, CEP89, SCLT1, and CEP164 form the backbone of pinwheel blades, with CEP83 confined at the root and CEP164 extending to the tip near the membrane-docking site. By contrast, FBF1 marks the distal end of the DAM near the ciliary membrane. Strikingly, unlike CEP164, which is essential for ciliogenesis, FBF1 is required for ciliary ...
  • 余慈顏 博士
    Langmuir 34, 3525−3532 (2018).
    Lipid nanodiscs are widely used platforms for studying membrane proteins in a near-native environment. Lipid nanodiscs made with membrane scaffold proteins (MSPs) in linear form have been well studied. Recently, a new kind of nanodisc made with MSPs in circular form, referred to as covalently circularized nanodiscs (cND), and is reported to have some possible advantages in various applications. Given the potential of nanodisc technology, researchers in the field are very interested in learning more about this new kind of nanodisc, such as the reproducibility, the production yield, and the possible pros and cons of using it. However, research on these issues is lacking. Here we report a new study on nanodiscs made with circular MSPs, which are produced from a method different to the previously reported method. We show that our novel production metho ...

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The 3rd Asian Conference on Thermoelectrics (ACT3) & The 5th Micro & Nanoscale Heat Transfer and Energy Workshop (MNHTE2018)
浦大邦紀念講堂 & 松柏講堂
2018-10-07 下午 01:50 ~ 2018-10-09 下午 06:30
We welcome you to the 3rd Asia Conference on Thermoelectrics (3rd ACT) and the 5th Micro & Nanoscale Heat Transfer and Energy Workshop (MNHTE2018), holding together at Institute of Atomic and Molecular Science of Academia Sinica, in the campus of National Taiwan University, Taipei, Taiwan. The 3rd ACT, following its predecessors in Wuhan (China) and Kyoto (Japan), will provide a platform for researchers interested in various topics of thermoelectric materials to exchange their latest works. We especially welcome participants from our neighborhoods to visit us, find more common interests, and establish more collaborations in the future. The MNHTE2018 will cover frontier topics of heat/energy transfer phenomena of novel materials by advanced tools or novel methods. The workshop aims at bringing together researchers in Taiwan and sharing their works with international scholars. Because heat transfer phenomena are of fundamental importance in improving thermoelectric properties, we believe that it will be highly beneficial to bring researchers from the two conferences together. The 3rd ACT and MNHTE2018 will have tutorials on Oct 7, followed by two-days conferences on Oct 8~9, at the campus of National Taiwan University. The conference is organized by Academia Sinica and National Taiwan University. We look forward to your visit and your enthusiastic participation.
10th Asian Photochemistry Conference
公務人力發展中心福華國際文教會館
2018-12-16 下午 06:00 ~ 2018-12-20 下午 04:00
Established in 1996, the Asian Photochemistry Conference (APC) aims to provide scientists a major forum to discuss their latest developments in fundamental and applied photochemistry and related research areas. The APC has been successfully held in various countries including Australia, China, India, Japan, Korea, New Zealand, Singapore, and Taiwan. The 10th Asian Photochemistry Conference (APC 2018) is organized by Academia Sinica and National Taiwan University. The Organizing Committee welcomes you to participate in APC 2018 to be held in the Howard Civil Service International House, Taipei, Taiwan on 16-20 December, 2018.
 
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最後更新於 2018-07-14 17:04:05
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