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You searched on: Topic Area: Nanotechnology

Displaying records 31 to 40 of 203 records.
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31. Single molecule confocal fluorescence lifetime correlation spectroscopy for accurate nanoparticle size determination
Topic: Nanotechnology
Published: 5/15/2014
Authors: Bonghwan B. Chon, Kimberly A Briggman, Jeeseong Hwang
Abstract: We report on an experimental procedure in confocal single molecule fluorescence lifetime correlation spectroscopy (FLCS) to determine the range of excitation power and molecule concentration in solution under which the application of an unmodified ...

32. Comparison of the Properties of Cellulose Nanocrystals and Cellulose Nanofibrils Isolated From Bacteria, Tunicate, and Wood Processed Using Acid, Enzymatic, Mechanical, and Oxidative Methods
Topic: Nanotechnology
Published: 4/18/2014
Authors: Iulia Alisa Sacui, Jeffrey W Gilman, Ryan C Nieuwendaal, Stephan J Stranick, Henryk Szmacinski, Mehdi Jorfi, Christopher Weder, Johan Foster, Richard Olsson, Daniel Burnett
Abstract: This work describes the study and characterization of native cellulose nanocrystals and nanofibrils (CNCs, CNFs), whose crystallinity, morphology, aspect ratio, and surface chemistry depend on the raw material source and hydrolysis conditions. Me ...

33. Preparation of nanocomposite plasmonic films made from cellulose nanocrystals or mesoporous silica decorated with unidirectionally aligned gold nanorods
Topic: Nanotechnology
Published: 4/11/2014
Authors: Michael Campbell, Qingkun Liu, Aric Warner Sanders, Julian Evans, Ivan I. Smalyukh
Abstract: Using liquid crystalline self-assembly of cellulose nanocrystals, we achieve long-range alignment of anisotropic metal nanoparticles in colloidal nanocrystal dispersions that are then used to deposit thin structured films with ordering features h ...

Topic: Nanotechnology
Published: 3/25/2014
Authors: Lin You, Jungjoon Ahn, Joseph J Kopanski

35. Frequency, amplitude, and phase measurement in contact resonance atomic force microscopies
Topic: Nanotechnology
Published: 3/12/2014
Authors: Gheorghe Stan, Santiago de Jesus Solares Rivera
Abstract: We analysed the resonance frequency, amplitude, and phase response of the first two eigenmodes of two contact-resonance atomic force microscopy (CR-AFM) configurations, differing in the method used to excite the system (cantilever base vs. sample exc ...

36. Capabilities of Single Particle Inductively Coupled Plasma Mass Spectrometry for the Size Measurement of Nanoparticles: A Case Study on Gold Nanoparticles
Topic: Nanotechnology
Published: 2/28/2014
Authors: Jingyu Liu, Karen E Murphy, Robert I. MacCuspie, Michael R Winchester
Abstract: The increasing application of engineered nanomaterials in consumer and medical products has motivated the development of single particle inductively coupled plasma mass spectrometry (spICP-MS) for characterizing nanomaterials under realistic envi ...

37. Head and Media Challenges for 3 Tb/in^u2^ Microwave Assisted Magnetic Recording
Topic: Nanotechnology
Published: 2/3/2014
Authors: Thomas J Silva, Justin M Shaw, Hans Toya Nembach, Mike Mallary, Kumar Srinivasan, Gerado Bertero, Dan Wolf, Christian Kaiser, Michael Chaplin, Mahendra Pakala, Leng Qunwen, Yiming Wang, Carl Elliot, Lui Francis
Abstract: A specific design for Microwave Assisted Magnetic Recording (MAMR) at about 3Tb/in^u2^ (0.47 Tb/cm^u2^ or 4.7 Pb/m^u2^) is discussed in detail to highlight the challenges of MAMR and to contrast its requirements with conventional Perpendicular Magnet ...

38. Template synthesis of gold nanoparticles with an organic molecular cage
Topic: Nanotechnology
Published: 1/16/2014
Authors: Ryan McCaffrey, Hai Long, Yinghua Jin, Aric Warner Sanders, Wounjhang Park, Wei Zhang
Abstract: We report a novel strategy for the controlled synthesis of gold nanoparticles (AuNPs) with narrow size distribution (1.9 {plus or minus} 0.4 nm) through NP nucleation and growth inside the cavity of a well-defined three-dimensional, shape-persist ...

39. Does Your SEM Really Tell the Truth? - How would you know? Part 1
Topic: Nanotechnology
Published: 12/16/2013
Authors: Michael T Postek, Andras Vladar
Abstract: The scanning electron microscope (SEM) has gone through a tremendous evolution to become a critical tool for many and diverse scientific and industrial applications. The high resolution of the SEM is especially suited for both qualitative and quantit ...

40. Impact of UV Irradiation on the Surface Chemistry and Structure of Multiwall Carbon Nanotube Epoxy Nanocomposites
Topic: Nanotechnology
Published: 12/6/2013
Authors: Elijah J Petersen, Thomas F. Lam, Justin M Gorham, Keana C K Scott, Christian John Long, Deborah L Stanley, Renu Sharma, James Alexander Liddle, Tinh Nguyen
Abstract: One of the most promising applications of nanomaterials is as nanofillers to enhance the properties of polymeric materials. However, the effect of nanofillers on polymers subject to typical environmental stresses, such as ultraviolet (UV) radiation, ...

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