Browsing Duke Faculty Articles by Subject "nanoscience & nanotechnology"

Now showing items 1-20 of 23

Design and Synthesis of Hierarchical MnO2 Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes

Hou, Ye; Cheng, Yingwen; Liu, Jie (AMER CHEMICAL SOC, 2010)

For efficient use of metal oxides, such as MnO2 and RuO2, in pseudocapacitors and other electrochemical applications, the poor conductivity of the metal oxide is a major problem To cackle the problem. we have designed a ...
Distributions of Parameters and Features of Multiple Bond Ruptures in Force Spectroscopy by Atomic Force Microscopy

Guo, Senli; Li, Nan; Lad, Nimit; Desai, Shivam; Akhremitchev, Boris B. (AMER CHEMICAL SOC, 2010)

Force spectroscopy measurement of rupture forces of bound molecules becomes an important physicochemical tool in characterizing intermolecular interactions, Atomic force microscopy (AFM) measurements are among the most ...
Gold Nanoparticles on Polarizable Surfaces as Raman Scattering Antennas

Chen, Shiuan-Yeh; Mock, Jack; Smith, David; Lazarides, Anne (AMER CHEMICAL SOC, 2010)

Surface plasmons supported by metal nanoparticles are perturbed by coupling to a surface that is polarizable Coupling results in enhancement of near fields and may increase the scattering efficiency of radiative modes. In ...
H-2 Storage in Microporous Carbons from PEEK Precursors

McNicholas, Thomas P.; Liu, Jie (AMER CHEMICAL SOC, 2010)

Large surface area (524-3275 m(2)/g) microporous carbons (MPCs) derived from poly(etheretherketone), or PEEK, have been synthesized and categorized for their roles as H-2 storage materials. It was found that, because of ...
Heterogeneities in Fullerene Nanoparticle Aggregates Affecting Reactivity, Bioactivity, and Transport

Chae, So-Ryong; Badireddy, Appala Raju; Budarz, Jeffrey Farner; Lin, Shihong; Xiao, Yao; Therezien, Mathieu; Wiesner, Mark (AMER CHEMICAL SOC, 2010)

Properties of nanomaterial suspensions are typically summarized by average values for the purposes of characterizing these materials and interpreting experimental results. We show in this work that the heterogeneity in ...
Inkless Microcontact Printing on SAMs of Boc- and TBS-Protected Thiols

Shestopalov, Alexander A.; Toone, Eric John (AMER CHEMICAL SOC, 2010)

We report a new inkless catalytic mu CP technique that achieves accurate, Fast, and complete pattern reproduction on SAMS of Boc- and TBS-protected thiols immobilized on gold using a polyurethane-acrylate stamp functionalized ...
In situ Synthesis of DNA Microarray on Functionalized Cyclic Olefin Copolymer Substrate

Saaem, Ishtiaq; Ma, Kuo-Sheng; Marchi, Alexandria N.; Labean, Thomas; Tian, Jingdong (AMER CHEMICAL SOC, 2010)

Thermoplastic materials such as cyclic-olefin copolymers (COC) provide a versatile and cost-effective alternative to the traditional glass or silicon substrate for rapid prototyping and industrial scale fabrication of ...
Leveraging Nanoscale Plasmonic Modes to Achieve Reproducible Enhancement of Light

Mock, Jack; Urzhumov, Yaroslav A.; Chen, Shiuan-Yeh; Smith, David (AMER CHEMICAL SOC, 2010)

The strongly enhanced and localized optical fields that occur within the gaps between metallic nanostructures can be leveraged for a wide range of functionality in nanophotonic and optical metamaterial applications Here, ...
Morphing Low-Affinity Ligands into High-Avidity Nanoparticles by Thermally Triggered Self-Assembly of a Genetically Encoded Polymer

Simnick, Andrew J.; Chilkoti, Ashutosh (AMER CHEMICAL SOC, 2010)

Multivalency is the increase in avidity resulting from the simultaneous interaction of multiple ligands with multiple receptors. This phenomenon, seen in antibody antigen and virus cell membrane interactions, is useful in ...
Multiple Dynamic Processes Contribute to the Complex Steady Shear Behavior of Cross-Linked Supramolecular Networks of Semidilute Entangled Polymer Solutions

Craig, Stephen (AMER CHEMICAL SOC, 2010)

Molecular theories of shear thickening and shear thinning in associative polymer networks are typically united in that they involve a single kinetic parameter that describes the network - a relaxation time that is related ...
Nanofabrication at High Throughput and Low Cost

Wiley, Benjamin (AMER CHEMICAL SOC, 2010)

The task of nanofabrication can, in principle, be divided into two separate tracks: generation and replication of the patterned features. These two tracks are different in terms of characteristics, requirements, and aspects ...
Phase Transfer Catalysts Drive Diverse Organic Solvent Solubility of Single-Walled Carbon Nanotubes Helically Wrapped by Ionic, Semiconducting Polymers

Deria, Pravas; Therien, Michael (AMER CHEMICAL SOC, 2010)

Use of phase transfer catalysts such as 18-crown-6 enables ionic, linear conjugated poly(2,6-{1,5-bis(3-propoxysulfonicacidsodiumsalt)}naphthylene]ethynylen e (PNES) to efficiently disperse single-walled carbon nanotubes ...
Piezopotential Gated Nanowire-Nanotube Hybrid Field-Effect Transistor

Ding, Lei; Liu, Jie (AMER CHEMICAL SOC, 2010)

We report the First piezoelectric potential gated hybrid held-effect transistors based on nanotubes and nanowires. The device consists of single-walled carbon nanotubes (SWNTs) on the bottom and crossed ZnO piezoelectric ...
Plasmonic Nanoparticles and Nanowires: Design, Fabrication and Application in Sensing

Vo-Dinh, Tuan; Dhawan, Anuj; Norton, Stephen; Khoury, Christopher G.; Wang, Hsin-Neng (AMER CHEMICAL SOC, 2010)

This study involves two aspects of our investigations of plasmonics-active systems: (i) theoretical and simulation studies and (ii) experimental fabrication of plasmonics-active nanostructures. Two types of nanostructures ...
Plasmon-Induced Electrical Conduction in Molecular Devices

Therien, Michael (AMER CHEMICAL SOC, 2010)

Metal nanoparticles (NPs) respond to electromagnetic waves by creating surface plasmons (SPs), which are localized, collective oscillations of conduction electrons on the NP surface. When interparticle distances are small, ...
Predicting the Frequency Dispersion of Electronic Hyperpolarizabilities on the Basis of Absorption Data and Thomas-Kuhn Sum Rules

Hu, Xiangqian; Xiao, Dequan; Keinan, Shahar; Therien, Michael; Yang, Weitao; Beratan, David (AMER CHEMICAL SOC, 2010)

Successfully predicting the frequency dispersion of electronic hyperpolarizabilities is an unresolved challenge in materials science and electronic structure theory. We show that the generalized Thomas-Kuhn sum rules, ...
Quantum dot-based theranostics

Ho, Yi-Ping; Leong, Kam (ROYAL SOC CHEMISTRY, 2010)

Luminescent semiconductor nanocrystals, also known as quantum dots (QDs), have advanced the fields of molecular diagnostics and nanotherapeutics. Much of the initial progress for QDs in biology and medicine has focused on ...
Steady-State Theory of Current Transfer

Beratan, David (AMER CHEMICAL SOC, 2010)

Current transfer is defined as a charge-transfer process where the transferred charge carries information about its original motion. We have recently suggested that such transfer causes the asymmetry observed in electron ...
Stereocomplexed Poly(lactic acid)-Poly(ethylene glycol) Nanoparticles with Dual-Emissive Boron Dyes for Tumor Accumulation

Palmer, Gregory; Dewhirst, Mark (AMER CHEMICAL SOC, 2010)

Responsive biomaterials play important roles in imaging, diagnostics, and therapeutics. Polymeric nanoparticles (NPs) containing hydrophobic and hydrophilic segments are one class of biomaterial utilized for these purposes. ...
The synchronization of superparamagnetic beads driven by a micro-magnetic ratchet

Gao, Lu; Gottron, Norman J., III; Virgin, Lawrie; Yellen, Benjamin B. (ROYAL SOC CHEMISTRY, 2010)

We present theoretical, numerical, and experimental analyses on the non-linear dynamic behavior of superparamagnetic beads exposed to a periodic array of micro-magnets and an external rotating field. The agreement between ...