ASME Call for Papers: Special Journal Issue on Nanomanufacturing

National nanomanufacturing Network: The ASME has issued a call for papers for a special issue of the Transactions of the ASME (American Society of Mechanical Engineers) Journal of Manufacturing Science and Engineering on nanomanufacturing.

Benefits of Three-Dimensional Integrated Nanostructures for Energy Applications

In three new studies, the ability to design 3D materials architectures provides a versatile approach towards optimization of device properties for enhanced performance in product applications.

Powering Nanomanufacturing Processes

National Nanomanufacturing Network: A recent study by Timothy Gutowski of MIT looks at the energy required for advanced manufacturing processes.

Nanoscience Research for Energy Needs

This 2004 report details the Department of Energy workshop on the relationship between nanoscale science and technology and the nation's energy needs.

A resist for electric imprint lithography

An electrically curable resist has been developed that can make electric imprint lithography (EIL) a reality. The resist is composed of a diaryliodonium salt photo acid generator and a cycloaliphatic epoxy monomer. Its polymerization takes place when an electric potential is applied between a conductive imprint mold and a substrate which sandwich the resist. A proof-of-concept pattern transfer by ...

Activity, Folding and Z-DNA Formation of the 8-17 DNAzyme in the Presence of Monovalent Ions

The effect of monovalent ions on both the reactivity and global folding of the 8-17 DNAzyme is investigated, and the results are compared with those of the hammerhead ribozyme, which has similar size and secondary structure. In contrast to the hammerhead ribozyme, the 8-17 DNAzyme activity is not detectable in the presence of 4 M K+, Rb+, or Cs+ or in the presence of 80 mM, [Co(NH3)(6)](3+). Only ...

Aerosol Processing for Nanomanufacturing

Advances in nanoparticle synthesis are opening new opportunities for a broad variety of technologies that exploit the special properties of matter at the nanoscale. To realize this potential will require the development of new technologies for processing nanoparticles, so as to utilize them in a manufacturing context. Two important classes of such processing technologies include the controlled ...

Economic Impact of Nanomanufacturing

With significant investment for nanoscience and technology initiatives being seeded at the federal and state levels, new models have emerged for sustaining critical research within academic institutions while providing the necessary industrial interactions to transition key technologies for commercialization. Also: Hybrid Solar Cells with Potential for Large-scale Manufacture; Wafer-scale ...

Effect of Cross-Linking on the Diffusion of Water, Ions, and Small Molecules in Hydrogels

The present study reports on molecular dynamics investigations of chemically cross-linked poly(ethylene glycol) hydrogels with the aim of exploring the diffusion properties of water, ions, and rhodamine within the polymer at the molecular level. The water structure and diffusion properties were studied at various cross-linking densities with molecular weights of the chains ranging from 572 to ...

Enzymatic activity of surface-immobilized horseradish peroxidase confined to micrometer- to nanometer-scale structures in nanocapillary array membranes

The charge transport processes in thin insulating films separating a gold electrode and an electrolyte solution are characterized using a constitutive admittance expression that accounts for conduction, diffusion, and polarization of charge within the films. We specifically investigate cases in which the electrolyte solution does not contain electroactive ions. The general impedance response of ...

Exploiting Substituent Effects for the Synthesis of a Photooxidatively Resistant Heptacene Derivative

Substituent effects have been exploited to produce an unusually persistent heptacene derivative. In total, four new heptacene derivatives with varying levels of photooxidative resistance (1 < 2 < 3 < 4) have been synthesized. A combination of p-(t-butyl)thiophenyl substituents at positions 7 and 16 (i.e., arylthio substituents attached to the most reactive ring) and o-dimethylphenyl substituents ...

Generating Particle Beams of Controlled Dimensions and Divergence: I. Theory of Particle Motion in Aerodynamic Lenses and Nozzle Expansions

A particle beam is produced when a particle-laden gas expands through a nozzle into a vacuum. This work discusses the theoretical basis of a novel method for producing highly collimated and tightly focused particle beams. The approach is to pass the particle-laden gas through a series of axisymmetric contractions and enlargements (so-called aerodynamic lenses) before the nozzle expansion. ...

Generating Particle Beams of Controlled Dimensions and Divergence: II. Experimental Evaluation of Particle Motion in Aerodynamic Lenses and Nozzle Expansions

A particle-beam-forming apparatus for producing narrow particle beams was developed based on the theory discussed in paper I of this series. It consists of a variable number of aerodynamic lenses (short capillaries and/or thin-plate orifices with diameters ranging from 3.5 to 7.0 mm) followed by an accelerating nozzle (3 mm). It was evaluated using monodisperse DOS and NaCl particles (0.02-0.24 ...

Incorporating Stimulus-Responsive Character into Filamentous Virus Assemblies

Controlling interactions between building blocks, in either guided or selfassemblies, is becoming increasingly important for creation of functional materials. We have focused our attention on the well-known model assembly, the filamentous bacteriophage, where our strategy is to 10 selectively alter surface features by focusing on spatially distinct capsid proteins. Towards introducing ...

Integrated Systems Nanomanufacturing: Challenges for Next Generation Nano-Enabled Products

The emerging capabilities of nanotechnology for systematic control and manufacturing across multiple length scales are evolving into the next generation of nanotechnology products. Also included: Gram-scale Production of Graphene; Best Practices for Working with Nanoparticles; and Controlled Nanomanufacturing of Magnetic Composite Nanofibers.

International Assessment of Research and Development of Carbon Nanotube Manufacturing and Applications

World Technology Evaluation Center report on Carbon Nanotube Manufacturing and Applications, sponsored by the NSF, ONR, NIBIB, and NIST

Investigation of Chemical/Mechanical Polishing of Niobium

A chemical/mechanical method for polishing flat niobium sheets to a mirror finish was developed. Various polishing slurries with different open circuit potentials and pH values were considered. All slurries fell within the niobate region of the Pourbaix diagrams, indicating that slurries are in a thermodynamically stable region. Oxidation characteristics of the niobium in the various slurries ...

Large-scale, heterogeneous integration of nanowire arrays for image sensor circuitry

Mass-Productions of Vertically Aligned Extremely Long Metallic Micro/Nanowires Using Fiber Drawing Nanomanufacturing

Measurement Challenges in Nanomanufacturing

Until recently, the semiconductor industry has been the only true nanomanufacturing industry. However, the increasing availability of significant quantities of nanoscale materials and of controllable nanostructuring techniques is enabling a range of new industrial scale nanomanufacturing processes. These are in contrast to both what is required for semiconductor manufacturing in three important ...

Multiplexed electrical sensor arrays in microfluidic networks

A major limitation of many microfluidic platforms is their inability to perform large scale, real time, sensing, routing, or scheduling of the materials moving through them. This paper seeks to address the first of these deficiencies by introducing a multiplexed sensing architecture capable of monitoring the movement of liquid droplets in large microfluidic networks. We describe the design and ...

Nano-morphology and charge photo-generation in oBHJs based on fullerene and bridged dithiophenes with Carbon and Silicon bridging atoms

Nanomanufacturing Summit 2009

Major nanomanufacturing community conference to be held on May 26-29 2009 in Boston, MA. Includes NNN Feature: Nanofabrication User Facilities; NNN Highlight: Novel Nanostructured Microbattery Fabrication; NNN Expert Review: Nanomanufacturing for Fuel Cells.

Nanomanufacturing Summit 2009

We'd like to thank all of our participants and attendees for making the first Nanomanufacturing Summit a successful event! The Nanomanufacturing Summit 2009 held in Boston from May 27 to 29 brought together experts in the field of and nanomanufacturing and highlighted innovative academic, government and industry research, successful commercialization strategies, and challenges and approaches for ...

Nanotubular metal-insulator-metal capacitor arrays for energy storage

Nanostructured devices have the potential to serve as the basis for next-generation energy systems that make use of densely packed interfaces and thin films1. One approach to making such devices is to build multilayer structures of large area inside the open volume of a nanostructured template. Here, we report the use of atomic layer deposition to fabricate arrays of metal-insulator-metal ...

Positioning Multiple Proteins at the Nanoscale with Electron Beam Cross-Linked Functional Polymers

Constructing multicomponent protein structures that match the complexity of those found in nature is essential for the next generation of medical materials. In this report, a versatile method for precisely arranging multicomponent protein nanopatterns in two-dimensional single-layer or three-dimensional multilayer formats using electron beam lithography is described. Eight-arm poly(ethylene ...

Productive Nanosystems: A Technology Roadmap

Report of the 2007 Productive Nanosystems workshop sponsored by The Waitt Family Foundation, Batelle, the Foresight Institute, Sun Microsystems, and Zyvex Labs: "The Roadmap project provided a unique, cross-disciplinary process for exploring current capabilities and near-term opportunities in atomically precise technologies (APT), and explored pathways leading toward advanced atomically precise ...

Research Challenges for Integrated Systems Nanomanufacturing

The emerging capabilities of nanotechnology today for systematic control and manufacturing across multiple length scales are evolving into the next generations of nanotechnology products. These products can be categorized as passive nanostructures, active nanostructures, multi-dimensional nanosystems, heterogeneous molecular nanosystems, and multiscale, integrated nanosystems. The improved ...

Solvent resistant microfluidic DNA synthesizer

We fabricated a microfluidic DNA synthesizer out of perfluoropolyether (PFPE), an elastomer with excellent chemical compatibility which makes it possible to perform organic chemical reactions, and synthesized 20-mer oligonucleotides on chip.

The NNN Newsletter

Welcome to the inaugural newsletter of the National Nanomanufacturing Network. Includes NNN Expert Review: The Frontline of Nanomanufacturing; NNN Highlight: Novel Nanopositioning Device with Increased Degrees of Freedom; and NNN Feature: An Interview with Vince Rotello.

Why Are Carbon Nanotubes Fast Transporters of Water?

Extraordinarily fast transport of water in carbon nanotubes (CNTs) in recent experiments has been generally attributed to the smoothness of the CNT surface. Using molecular dynamics simulations we investigate water flow in (16,16) CNTs and show that the enhanced flow rates over Hagen-Poiseuille flow arise from a velocity -jump- in a depletion region at the water nanotube interface and that ...