http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Wenyu Shi (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
Preparation and Thermoelectric Properties of Flower-Like Nanoparticles of Ce-Doped Bi2Te3
Fang Wu,Wenyu Shi,Xing Hu 대한금속·재료학회 2015 ELECTRONIC MATERIALS LETTERS Vol.11 No.1
Ce-doped CexBi2-xTe3 (x = 0, 0.1, 0.2, 0.3) flower-like nanoparticles were synthesizedby a hydrothermal method through a careful adjustment of the amount ofethylenediamine tetraacetic acid surfactant. The nanopowders of flower-likenanoparticles were hot-pressed into bulk pellets and the thermoelectric properties ofthe pellets examined. The results showed that Ce-doping increased the power factoreffectively at low temperature; however, the thermal conductivity of the nanopowdertoo increased because of the lighter atomic mass of Ce compared to Bi. As a result, aZT value of 1.22, higher than that of the undoped sample, was attained at 386 K forthe Ce0.1Bi1.9Te3 sample.
-
Kaiqiang Yu,Li Peng,Wenyu Liang,Jing Shi,Guoqi Zheng,Hong Wang,Xinhua Liang,Shijie Wu 한국식품과학회 2024 Food Science and Biotechnology Vol.33 No.1
Licorice from Glycyrrhiza uralensis roots is used in foods and medicines. Although we are aware that licorice roots and leaves have distinct material compositions, the specific reasons for these differences remain unknown. Comparison of the metabolomes and transcriptomes between the leaves and roots revealed flavonoids and triterpenoid saponins were significantly different. Isoflavones were enriched in roots because of upregulation of genes encoding chalcone isomerase and flavone synthase, which are involved in isoflavone synthesis. Six triterpenoid saponins were significantly enriched only in the roots. The leaves did not accumulate glycyrrhetinic acid because of low expression levels of genes involved in its synthesis. A gene encoding a UDP glycosyltransferase, which likely catalyzes the key step in the transformation of glycyrrhetinic acid to glycyrrhizin, was screened. Our results provide information about the differences in flavonoid and triterpenoid synthesis between roots and leaves, and highlight targets for genetic engineering.
-
Kang, Ji-Hun,Wang, Sheng,Shi, Zhiwen,Zhao, Wenyu,Yablonovitch, Eli,Wang, Feng American Chemical Society 2017 NANO LETTERS Vol.17 No.3
<P>Two-dimensional surface polaritons (2DSPs), such as graphene plasmons, exhibit various unusual properties, including electrical tunability and strong spatial confinement with high Q-factor, which can enable tunable photonic devices for deep subwavelength light manipulations. Reflection of plasmons at the graphene’s edge plays a critical role in the manipulation of 2DSP and enables their direct visualization in near-field infrared microscopy. However, a quantitative understanding of the edge-reflections, including reflection phases and diffraction effects, has remained elusive. Here, we show theoretically and experimentally that edge-reflection of 2DSP exhibits unusual behaviors due to the presence of the evanescent waves, including an anomalous Goos-Hänchen phase shift as in total internal reflections and an unexpected even–odd peak amplitude oscillation from the wave diffraction at the edge. Our theory is not only valid for plasmons in graphene but also for other 2D polaritons, such as phonon polaritons in ultrathin boron nitride flakes and exciton polariton in two-dimensional semiconductors.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2017/nalefd.2017.17.issue-3/acs.nanolett.6b05077/production/images/medium/nl-2016-050772_0005.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nl6b05077'>ACS Electronic Supporting Info</A></P>
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
