This article explores single-layer tungsten disulfides (WS₂) because of their unique tunable bandgap. The authors report the scalable synthesis of uniform single-layer WS2 film by a two-step chemical vapor deposition (CVD) method followed by a laser thinning process.
November 23, 2017
Park, Juhong; Kim, Min Su; Cha, Eunho; Kim, Jeongyong & Choi, Wonbong
This article examines the chemical structures of biodegradable films created out of soy protein isolate (SPI), sodium dodecylbenzenesulfonate (SDBS) and pentaerythritol glycidyl ether (PEGE). The thermal stabilities of the films were also examined by means of the thermo-gravimetric analysis.
In this article, the author proves the existence of an infinite number of radial solutions of Δu+f(u)=0 on the exterior of the ball of radius R>0 centered at the origin and f is odd with f<0 on (0,β), f>0 on (β,δ), and f≡0 for u>δ. The primitive F(u)=∫u0f(t)dt has a "hilltop" at u=δ which allows one to use the shooting method and ODE techniques to prove the existence of solutions.
Article asserts that anemia in pregnancy is a common condition, especially in low-income countries, but a possible association between maternal anemia and childhood cancer has not been widely studied. In a separate analysis within the years available (births 1995–2014), the authors examined cancer risks among mothers taking prescribed vitamin supplements, using data from the National Prescription Register.