nanostructures – Page 4 – TechConnect Briefs

Quantum Design of Complex Nanostructured Electronic Materials

Williamson A.J., Lawrence Livermore National Laboratory, US

Over the last decade, our ability to predict the fundamental properties of nanoscale building blocks such as quantum dots, wires, and slabs has improved dramatically. In particular, first principles modeling techniques can now routinely predict [...]

Controllable synthesis of patterned ZnO nanostructures based on the templation of plant cell walls

Cheng C.-L., Chen C.C., Chen T.T., Chen Y.F., Cheng C.-L., Lin H-Y, Chen C.C., Chen T.T., Chen Y.F., Cheng C.-L., Chen C.C., Chen T.T., Chen Y.F., Cheng C.-L., National Taiwan University, TW

A novel approach based on vapor-phase transport technique using Au-coated plant cell walls with metallic ions as the catalyst has been developed to synthesize ZnO nanostructures. It is shown that plant cell walls can serve [...]

Synthesis of Nanostructures from Carbides Sheets

Diaz Barriga Arceo L., Garibay Febles V., Orozco E., Zeifert B., Palacios Gonzalez E., German C.R.Sr., Rios-Guerrero L., Leyte Guerrero F., Instituto Politecnico Nacional, MX

Nanotubes and nanoparticles were obtained from a lamellar solid phase using a two step method: mechanical alloying (MA) and heat treatment. MA was used to prepare the monometallic carbide and the bimetallic carbides by milling [...]

Dip Pen NanolithographyTM: Nanofabrication and Nanoscale Assembly – Top Down Nanostructures and Bottom Up Nanobio

Haaheim J., NanoInk Inc, US

Precision nanoscale deposition is a fundamental requirement for much of current nanoscience research. Further, depositing a wide range of materials as nanoscale features onto diverse surfaces is a challenging requirement for nanoscale processing systems. Dip [...]

Arrays of Cu2+-Complexed Organic Clusters Grown on Gold Nano Dots

de Picciotto A., Wissner-Gross A.D., Lavallee G., Weiss P.S., Montclair State University, US

Controlled growth of organic multilayers from periodic gold dot arrays on SiO2 surfaces has been used to create complex overlayer structures. Nanosphere lithography was first used to produce uniform metal patterns with particle sizes of [...]

Gold Composite- and Macroporous Gold Nanoparticle Films by a Vertical Deposition Method

Badilescu S., Kahrizi M., Ashrit P.V., Truong V-V, Concordia University, CA

Composite films have been prepared in one step by a vertical deposition method from the aqueous suspension of gold colloids and polystyrene (PS) microspheres. The composite is formed on a glass substrate by convective assembly [...]

Surface Plasmon Absorption of Metallic Nanostructures in an Amplifying Medium

Smuk A.Y., Lawandy N.M., Solaris Nanosciences Corporation, US

Numerous applications that rely on the local field enhancement associated with the Surface Plasmon Resonance (SPR) have been suggested. With host material being an integral part in forming SPR, systems with optically transparent host have [...]

Scaling Relation for the Size Dependence of Acoustic, Dielectronic and Photonic Behaviour of Nanosolid Silicon

Sun C.Q., Pan L.K., Li C.M., School EEE, NTU, Singapore, SG

Structural miniaturization provides us with a new freedom that is indeed fascinating. The new freedom of size not only allows us to tune the physical and chemical properties of a specimen by simply adjusting the [...]

Atomistic Simulations in Nanostructures Composed of Tens of Millions of Atoms: Importance of long-range Strain Effects in Quantum Dots

Korkusinski M., Klimeck G., Xu H., Lee S., Goasguen S., Saied F., Purdue University, US

Realistic calculations of propertioes of nanostructures begin with the determination of equilibrium positions of constituent atoms. The nanoelectronic modeling tool NEMO-3D determines these positions by minimizing the total elastic energy. The displacements are further used [...]

Enabling Nanofabrication through Dip Pen Nanolithography™

Eby R., Leckenby J., NanoInk Inc, US

Dip Pen Nanolithography, DPN™, was discovered in the laboratory of Dr Chad Mirkin at Northwestern University leading to the founding of NanoInk, Inc. with a mission to develop, manufacture and advance the process of DPN [...]