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Role of Balloon Guide Catheter in Modern Endovascular Thrombectomy
Chueh, Ju-Yu,Kang, Dong-Hun,Kim, Byung Moon,Gounis, Matthew J. The Korean Neurosurgical Society 2020 Journal of Korean neurosurgical society Vol.63 No.1
Proximal flow control achieved with a balloon guide catheter (BGC) during endovascular treatment of acute ischemic stroke is reviewed in this article. In clinical practice, BGCs offer a multi-faceted approach for clot retrieval by creating proximal flow arrest, reducing embolic burden, and shortening procedure time. Evaluation of frontline thrombectomy procedures with BGCs revealed advantages of combined use over the conventional guide catheter (CGC), notably in the significant reduction of distal emboli to both the affected and previously unaffected territories. Recently, new measures of early and complete reperfusion at first thrombectomy pass have been identified as independent predictors of improved outcomes, which were consistently demonstrated with use of BGC as a safe and effective option to minimize number of passes during intervention. Prior randomized controlled trials reported the positive correlation between BGC-treated patients and a lower risk of mortality as well as shortened procedure time. While BGC use is more common in stent retriever-mediated mechanical thrombectomy, preliminary data has shown the potential benefit of device application during contact aspiration thrombectomy to achieve successful recanalization. However, the question of which major endovascular strategy reigns superior as a frontline remains to be answered. Along with clinical case assessments, BGC performance during in-vitro simulation was analyzed to further understand mechanisms for optimization of thrombectomy technique.
Correction: Manipulation of cell adhesion and dynamics using RGD functionalized polymers
Li, Juyi,Yu, Yingjie,Kim, Myungwoong,Li, Kao,Mikhail, John,Zhang, Linxi,Chang, Chung-Chueh,Gersappe, Dilip,Simon, Marcia,Ober, Christopher,Rafailovich, Miriam Royal Society of Chemistry 2017 Journal of Materials Chemistry B Vol. No.
<P>Correction for ‘Manipulation of cell adhesion and dynamics using RGD functionalized polymers’ by Juyi Li <I>et al.</I>, <I>J. Mater. Chem. B</I>, 2017, DOI: 10.1039/c7tb01209h.</P>
Research and Development of RFIC Technology in Smart Temperature Information Material
Chang, Chih-Yuan,Hung, San-Shan,Chang, Yu-Chueh,Peng, Yu-Fang Korea Institute of Construction Engineering and Ma 2011 Journal of construction engineering and project ma Vol.1 No.1
Conservation of energy and fuel is the trend in smart building design. Radio Frequency Integrated Circuit (RFIC) technology is often used in temperature sensing and signal transmission to manage indoor temperature, but it is rarely applied to the shell of the building. Heat retention and poor insulation in building shells are the largest causes of high energy consumption by indoor air conditioning. Through combining RFIC technology with temperature sensors, this study will develop smart temperature information material that can be embedded in concrete. In addition to accurately evaluating the effectiveness of shell insulation material, the already-designed Building Physiology Information System can monitor long-term temperature changes, leading to smarter building health management.
Manikandan, Arumugam,Ilango, P. Robert,Chen, Chia-Wei,Wang, Yi-Chung,Shih, Yu-Chuan,Lee, Ling,Wang, Zhiming M.,Ko, Hyunhyub,Chueh, Yu-Lun The Royal Society of Chemistry 2018 Journal of Materials Chemistry A Vol.6 No.31
<P>Here, we demonstrate the successful synthesis of (1T/2H) MoS2/α-MoO3 heterostructured nanoflowers at a low temperature of 200 °C by a one-step hydrothermal method. By tuning the reaction time under the influence of thiourea and hydrazine hydrate, we established a complete phase-engineered MoS2 with 1T and 2H phases on the surface of α-MoO3. Active sites associated with the phase-engineered (1T/2H) MoS2/α-MoO3 hybrid nanoflowers enable them to exhibit dual roles as a superior dye adsorbent and an electrocatalyst towards the hydrogen evolution reaction. The 2H-rich (1T/2H) MoS2/α-MoO3 hybrid heterostructured nanoflowers prepared at 16 h achieved a high surface area of 37.97 m<SUP>2</SUP> g<SUP>−1</SUP>, and 97% of the RhB dye with an initial concentration of 47.9 mg L<SUP>−1</SUP> was removed within 10 min through the adsorption process, which is the highest known removal efficiency reported in the literature. As a hydrogen evolution reaction (HER) electrocatalyst in acidic solution, the 1T-rich (1T/2H) MoS2/α-MoO3 hybrid heterostructured nanoflowers prepared at 12 h exhibited a highly efficient catalytic activity by achieving a low overpotential of 232 mV at a current density of 10 mA cm<SUP>−2</SUP>, which is comparable to those of previously reported HER catalysts based on MoS2. Moreover, this sample reached a low Tafel slope of 81 mV dec<SUP>−1</SUP> and was stable when operated for more than 1000 cycles.</P>
p‐Type InP Nanopillar Photocathodes for Efficient Solar‐Driven Hydrogen Production
Lee, Min Hyung,Takei, Kuniharu,Zhang, Junjun,Kapadia, Rehan,Zheng, Maxwell,Chen, Yu‐,Ze,Nah, Junghyo,Matthews, Tyler S.,Chueh, Yu‐,Lun,Ager, Joel W.,Javey, Ali WILEY‐VCH Verlag 2012 Angewandte Chemie Vol.124 No.43
<P><B>Perfekte Textur</B>: Der Einfluss der Oberflächen‐Nanotexturierung, der TiO<SUB>2</SUB>‐Passivierung und des Ru‐Cokatalysators auf die photoelektrochemische Wasserstoffentwicklung durch p‐InP‐Photokathoden wurde untersucht. Höhere Stromdichten und günstigere Onset‐Potentiale werden nach Oberflächen‐Nanotexturierung beobachtet. NHE=Normalwasserstoffelektrode.</P>
Quantum Size Effects on the Chemical Sensing Performance of Two-Dimensional Semiconductors
Nah, Junghyo,Kumar, S. Bala,Fang, Hui,Chen, Yu-Ze,Plis, Elena,Chueh, Yu-Lun,Krishna, Sanjay,Guo, Jing,Javey, Ali American Chemical Society 2012 The Journal of Physical Chemistry Part C Vol.116 No.17
<P>We investigate the role of quantum confinement on the performance of gas sensors based on two-dimensional InAs membranes. Pd-decorated InAs membranes configured as H<SUB>2</SUB> sensors are shown to exhibit strong thickness dependence, with ∼100× enhancement in the sensor response as the thickness is reduced from 48 to 8 nm. Through detailed experiments and modeling, the thickness scaling trend is attributed to the quantization of electrons which favorably alters both the position and the transport properties of charge carriers; thus making them more susceptible to surface phenomena.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpccck/2012/jpccck.2012.116.issue-17/jp300446z/production/images/medium/jp-2012-00446z_0002.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jp300446z'>ACS Electronic Supporting Info</A></P>
In situ doping control and electrical transport investigation of single and arrayed CdS nanopillars
Gu, Leilei,Liu, Xi,Kwon, Kyungmook,La, Chih-Chung,Lee, Min Hyung,Yu, Kyoungsik,Chueh, Yu-Lun,Fan, Zhiyong The Royal Society of Chemistry 2013 Nanoscale Vol.5 No.16
<P>Highly aligned intrinsic and indium doped CdS nanopillar arrays were fabricated via a template assisted Solid Source Chemical Vapor Deposition method (SSCVD). The prepared nanopillar arrays were well aligned, dense and uniform in diameter and length. Their geometry can be well defined by the design of the templates. These unique properties make them promising candidates for future photonic and optoelectronic devices. The structure of the prepared nanopillars has been studied by high resolution transmission electron microscopy and their different growth orientation as compared to those grown in free space has been observed and interpreted by the template induced change of the liquid-solid interfacial energy and the surface tension at the edge of the circular interface. To investigate electrical property of CdS nanopillars, vertical nanopillar array devices and horizontal individual nanopillar field-effect transistors have been fabricated and characterized. The measurements showed that the location of the indium doping source significantly affected carrier concentration, conductivity and field-effect mobility of the prepared CdS nanopillars. Particularly, it was found that conductivity could be improved by 4 orders of magnitude and field-effect mobility could be enhanced up to 50 cm(2) V(-1) s(-1) via proper doping control. These results enable further applications of CdS nanopillars in nano-optoelectronic applications such as photodetection and photovoltaics in the future.</P>