http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Daniel Svensson,Aage Radmann 글로벌지식마케팅경영학회 2023 Journal of Global Sport Management Vol.8 No.3
Sport has often had an important role in times of crisis, but the Covid-19 pandemic is another matter. Sport was heavily affected world-wide on all levels. In Sweden, gathering people for endurance events conflicted with the Covid-19 restrictions. Some events were cancelled, but many tried to adapt. What adaptation strategies to Covid-19 have Swedish event organizers used? What role have digital tools played in their adaptation? What economic impacts did these events experience? We argue that the challenges posed by Covid-19 have accelerated the digitization of endurance events and highlighted the tensions between commercial and non-commercial actors in sports due to the differences in financial structure and eligibility for economic support. We thereby contribute to the growing research on how sport events in general have been impacted by the Covid-19 pandemic, and specifically in the context of Sweden’s somewhat exceptional response to the pandemic.
Carbon nanotube field effect transistors with suspended graphene gates.
Svensson, Johannes,Lindahl, Niklas,Yun, Hoyeol,Seo, Miri,Midtvedt, Daniel,Tarakanov, Yury,Lindvall, Niclas,Nerushev, Oleg,Kinaret, Jari,Lee, Sangwook,Campbell, Eleanor E B American Chemical Society 2011 Nano letters Vol.11 No.9
<P>Novel field effect transistors with suspended graphene gates are demonstrated. By incorporating mechanical motion of the gate electrode, it is possible to improve the switching characteristics compared to a static gate, as shown by a combination of experimental measurements and numerical simulations. The mechanical motion of the graphene gate is confirmed by using atomic force microscopy to directly measure the electrostatic deflection. The device geometry investigated here can also provide a sensitive measurement technique for detecting high-frequency motion of suspended membranes as required, e.g., for mass sensing.</P>
Determination of the Bending Rigidity of Graphene via Electrostatic Actuation of Buckled Membranes
Lindahl, Niklas,Midtvedt, Daniel,Svensson, Johannes,Nerushev, Oleg A.,Lindvall, Niclas,Isacsson, Andreas,Campbell, Eleanor E. B. American Chemical Society 2012 Nano letters Vol.12 No.7
<P>Classical continuum mechanics is used extensively to predict the properties of nanoscale materials such as graphene. The bending rigidity, κ, is an important parameter that is used, for example, to predict the performance of graphene nanoelectromechanical devices and also ripple formation. Despite its importance, there is a large spread in the theoretical predictions of κ for few-layer graphene. We have used the snap-through behavior of convex buckled graphene membranes under the application of electrostatic pressure to determine experimentally values of κ for double-layer graphene membranes. We demonstrate how to prepare convex-buckled suspended graphene ribbons and fully clamped suspended membranes and show how the determination of the curvature of the membranes and the critical snap-through voltage, using AFM, allows us to extract κ. The bending rigidity of bilayer graphene membranes under ambient conditions was determined to be 35.5<SUB>–15.0</SUB><SUP>+20.0</SUP> eV. Monolayers are shown to have significantly lower κ than bilayers.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2012/nalefd.2012.12.issue-7/nl301080v/production/images/medium/nl-2012-01080v_0001.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nl301080v'>ACS Electronic Supporting Info</A></P>