Critical resolved shear stress measurements for silicon‐doped GaAs single crystals

Making angle-resolved photoemission measurements on corrugated monolayer crystals: Suspended exfoliated single-crystal graphene

Kevin R. Knox,1,2 Andrea Locatelli,3 Mehmet B. Yilmaz,4 Dean Cvetko,5,6 Tevfik Onur Menteş,3 Miguel Ángel Niño,3,7 Philip Kim,1 Alberto Morgante,5,8 and Richard M. Osgood Jr.2 1Department of Physics, Columbia University, New York, New York, USA 2Department of Applied Physics, Columbia University, New York, New York, USA 3Elettra–Sincrotrone Trieste S.C.p.A., Basovizza, Trieste, Italy 4Departmen...

Friction Angle Measurements on a Naturally Formed Gravel Streambed: Implications for Critical Boundary Shear Stress

We report the first measurements of friction angles for a naturally formed gravel streambed. For a given test grain size placed on a bed surface, friction angles varied from 10" to over 100'; friction angle distributions can be expressed as a function of test grain size, median bed grain size, and bed sorting parameter. Friction angles decrease with increasing grain size relative to the median ...

Effect of soil composition on critical water erosion shear stress

A method for measuring the critical shear stress of cohesive soils

Irradiated Single Crystals for High Temperature Measurements in Space Applications

While spacecrafts experience temperatures from -120 to 110°C on the orbit, their surface reaches extremely high temperatures, well above 1000 °C, during descent into the atmosphere due to aerodynamic heating. Sophisticated insulation systems are designed for thermal protection. One of the steps in designing a protection system is experimental temperature measurements. Neutron flux induces point...