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Full-Text Articles in Nanoscience and Nanotechnology

A Simple Add-On Microfluidic Appliance For Accurately Sorting Small Populations Of Cells With High Fidelity, Michael Grad, Erik F. Young, Lubomir Smilenov, David J. Brenner, Daniel Attinger Nov 2013

A Simple Add-On Microfluidic Appliance For Accurately Sorting Small Populations Of Cells With High Fidelity, Michael Grad, Erik F. Young, Lubomir Smilenov, David J. Brenner, Daniel Attinger

Mechanical Engineering Publications

Current advances in single cell sequencing, gene expression and proteomics require the isolation of single cells, frequently from a very small source population. In this work we describe the design and characterization of a manually operated microfluidic cell sorter that (1) can accurately sort single or small groups of cells from very small cell populations with minimal losses, (2) that is easy to operate and that can be used in any laboratory that has a basic fluorescent microscope and syringe pump, (3) that can be assembled within minutes, (4) that can sort cells in very short time (minutes) with minimum ...


Book Review: Nanoelectric Devices By Byung-Gook Park, Sung Woo Huang And Young June Park, Ganesh Balasubramanian Jul 2013

Book Review: Nanoelectric Devices By Byung-Gook Park, Sung Woo Huang And Young June Park, Ganesh Balasubramanian

Mechanical Engineering Publications

The importance of nanoelectronics is enormous given the constant demand for enhancement in performance of electronic and computing devices. While Moore's law predicted the exponential increase in the power of processing units, the associated device level physics have brought about a new set of interdisciplinary challenges. Miniaturization of transistors has been the key to the unprecedented growth of microelectronics and its gradual transition to lower length scales. However, system sizes at the nanoscale being comparable to the mean free paths of the charge carriers (electrons), additional considerations in the transport processes need to be accounted for to obtain a ...


Preparation And Characterization Of Whey Protein Isolate Films Reinforced With Porous Silica Coated Titania Nanoparticles, Dattatreya M. Kadam, Mahendra Thunga, Sheng Wang, Michael R. Kessler, David A. Grewell, Buddhi P. Lamsal, Chenxu Yu Jul 2013

Preparation And Characterization Of Whey Protein Isolate Films Reinforced With Porous Silica Coated Titania Nanoparticles, Dattatreya M. Kadam, Mahendra Thunga, Sheng Wang, Michael R. Kessler, David A. Grewell, Buddhi P. Lamsal, Chenxu Yu

Agricultural and Biosystems Engineering Publications

Whey protein isolate (WPI) films embedded with TiO2@@SiO2 (porous silica (SiO2) coated titania (TiO2)) nanoparticles for improved mechanical properties were prepared by solution casting. A WPI solution of 1.5 wt% TiO2@@SiO2 nanoparticles was subjected to sonication at amplitudes of 0, 16, 80 and 160 μm prior to casting in order to improve the film forming properties of protein and to obtain a uniform distribution of nanoparticles in the WPI films. The physical and mechanical properties of the films were determined by dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), and tensile testing. Water vapor permeability (WVP) measurements revealed ...


Enhanced Polymer Nanocomposites For Condition Assessment Of Wind Turbine Blades, Husaam S. Saleem, M. Thunga, M. Kollosche, Michael R. Kessler, Simon Laflamme Apr 2013

Enhanced Polymer Nanocomposites For Condition Assessment Of Wind Turbine Blades, Husaam S. Saleem, M. Thunga, M. Kollosche, Michael R. Kessler, Simon Laflamme

Civil, Construction and Environmental Engineering Conference Presentations and Proceedings

Damages in composite components of wind turbine blades and large-scale structures can lead to increase in maintenance and repair costs, inoperability, and structural failure. The vast majority of condition assessment of composite structures is conducted by visual inspection and non-destructive evaluation (NDE) techniques. NDE techniques are temporally limited, and may be further impeded by the anisotropy of the composite materials, conductivity of the fibers, and the insulating properties of the matrix. In previous work, the authors have proposed a novel soft elastomeric capacitor (SEC) sensor for monitoring of large surfaces, applicable to composite materials. This soft capacitor is fabricated using ...


Electrical Poling Below Coercive Field For Large Piezoelectricity, Hanzheng Guo, Cheng Ma, Xiaoming Luo, Xiaoli Tan Mar 2013

Electrical Poling Below Coercive Field For Large Piezoelectricity, Hanzheng Guo, Cheng Ma, Xiaoming Luo, Xiaoli Tan

Materials Science and Engineering Publications

Isotropic polycrystalline ferroelectric ceramics have to be electrically poled to develop a net macroscopic polarization and hence piezoelectricity. It is well accepted that a sufficient poling can only be realized under an electric field that is much higher than the coercive field. In this study, we observed in (Bi1/2 Na 1/2)TiO3-BaTiO3 ceramics that large piezoelectricity can develop at poling fields far below the measured coercive field. Using in situ transmission electron microscopy, such an unusual behavior, is interpreted with the polarization alignment of polar nanodomains in the non-ergodic relaxor phase.