Manipulating properties of matter at the nanoscale is the essence of nanotechnology, which has enabled the realization of quantum dots, nanotubes, metamaterials, and two-dimensional materials with tailored electronic and optical properties. Two-dimensional semiconductors have revealed promising perspectives in nanotechnology. However, the tunability of their physical properties is challenging f...

Quantum-dot cellular automaton (QCA) is a novel nanotechnology that provides a very different computation platform than traditional CMOS, in which polarization of electrons indicates the digital information. This paper demonstrates designing combinational circuits based on quantum-dot cellular automata (QCA) nanotechnology, which offers a way to implement logic and all interconnections with onl...

The anodization of aluminum is an electro-chemical process that changes the surface chemistry of the metal, via oxidation, to produce an anodic oxide layer. During this process a self organized, highly ordered array of cylindrical shaped pores can be produced with controllable pore diameters, periodicity and density distribution. This enables anodic aluminum oxide (AAO) membranes to be used as ...

Juan J. Bravo-Suárez Centro de Investigaciones en Catálisis, Escuela de Ingeniería Química, Universidad Industrial de Santander, A.A. 678 Bucaramanga, Colombia and Environmental Catalysis and Nanomaterials Laboratory, Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0211 Edgar A. Páez-Mozo Centro de Investigaciones en Catálisis,...

Naresh C. Osti,1,* Michael Naguib,2 Karthik Ganeshan,3 Yun K. Shin,3 Alireza Ostadhossein,4 Adri C. T. van Duin,3 Yongqiang Cheng,1 Luke L. Daemen,1 Yury Gogotsi,5 Eugene Mamontov,1 and Alexander I. Kolesnikov1,† 1Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 2Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tenne...

An astonishingly broad application potential in biotechnology, biomimetics, and nanotechnology is revealed by studies on the structure, chemistry, biosynthesis, genetics, self-assembly, and function of supramolecular surface layers (S layers). These are monomolecular, crystalline assemblies of protein or glycoprotein subunits and represent one of the most commonly observed surface structures of...

Tremendous efforts have been devoted to the synthesis and application of two-dimensional (2D) nanomaterials due to their extraordinary and unique properties in electronics, photonics, catalysis, etc., upon exfoliation from their bulk counterparts. One of the greatest challenges that scientists are confronted with is how to produce large quantities of 2D nanomaterials of high quality in a commer...

The effect of illumination on the hydrofluoric acid etching of AlAs sacrificial layers with systematically varied thicknesses in order to release and roll up InGaAs/GaAs bilayers was studied. For thicknesses of AlAs below 10 nm, there were two etching regimes for the area under illumination: one at low illumination intensities, in which the etching and releasing proceeds as expected and one at ...

Juan J. Bravo-Suárez Centro de Investigaciones en Catálisis, Escuela de Ingeniería Química, Universidad Industrial de Santander, A.A. 678 Bucaramanga, Colombia and Environmental Catalysis and Nanomaterials Laboratory, Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0211 Edgar A. Páez-Mozo Centro de Investigaciones en Catálisis,...