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Displaying records 11 to 20 of 30 records.
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11. N-methylmesoporphyrin IX fluorescence as a reporter of strand orientation in guanine quadruplexes
Topic: Nanobiotechnology
Published: 4/1/2014
Authors: Navin C. Sabharwal, Victoria Savikhin, Joshua Turek-Herman, John M. Nicoludis, Veronika A Szalai, Liliya Yatsunyk
Abstract: Guanine quadruplexes (GQ) are four-stranded DNA structures formed by guanine-rich DNA sequences. Formation of GQs inhibits cancer cell survival, but detecting GQs in vivo has proved difficult, in part because of GQ structural diversity. Development ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914285

12. Nanometrology Using Through-Focus Scanning Optical Microscopy Method
Topic: Nanobiotechnology
Published: 12/21/2011
Authors: Ravikiran Attota, Richard M Silver
Abstract: We present an initial review of a novel through-focus scanning optical microscopy (TSOM) imaging method that produces nanometer dimensional measurement sensitivity using a conventional bright-field optical microscope. In the TSOM method a target is ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905395

13. Nanoparticle size and shape evaluation using the TSOM optical microscopy method
Topic: Nanobiotechnology
Published: 6/6/2010
Authors: Ravikiran Attota, Richard J Kasica, Lei Chen, Premsagar Purushotham Kavuri, Richard M Silver, Andras Vladar
Abstract: We present a novel optical TSOM (through-focus scanning optical microscopy - pronounced as 'tee-som') method that produces nanoscale dimensional measurement sensitivity using a conventional optical microscope. The TSOM method uses optical information ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905490

14. Nanoscale Measurements With the TSOM Optical Method
Series: OTHER
Topic: Nanobiotechnology
Published: 1/4/2010
Author: Ravikiran Attota
Abstract: A novel through-focus scanning optical microscope (TSOM - pronounced as 'tee-som') technique that produces nanometer dimensional measurement sensitivity using a conventional optical microscope by analyzing images obtained at different focus positions ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904673

15. Nanoscale Measurements with a Through-Focus Scanning-Optical-Microscope
Topic: Nanobiotechnology
Published: 7/15/2009
Authors: Ravikiran Attota, Richard M Silver, Thomas Avery Germer
Abstract: We present a novel optical technique that produces nanometer dimensional measurement sensitivity using a conventional optical microscope, by analyzing through-focus scanning-optical-microscope (TSOM) images obtained at different focus positions. In ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902707

16. O2 A-band line parameters to support atmospheric remote sensing. Part II: The rare isotopologues
Topic: Nanobiotechnology
Published: 7/21/2011
Authors: Joseph Terence Hodges, David A Long, Daniel K Havey, S. S. Yu, M Okumura, Charles E Miller
Abstract: Frequency-stabilized cavity ring-down spectroscopy (FS-CRDS) was employed to measure over 100 transitions in the R-branch of the b1Σg+←X3Σg-(0,0) band for the rare O2 isotopologues. The use of 17O- and 18O-enriched mixtures allowed fo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907932

17. Quantifying Dithiothreitol Displacement of Functional Ligands from Gold Nanoparticles
Topic: Nanobiotechnology
Published: 10/27/2012
Authors: De-Hao D. Tsai, Frank W DelRio, Sherrie R. Elzey, Suvajyoti S. Guha, Michael Russel Zachariah, Vincent A Hackley, Melanie P Shelton
Abstract: Dithiothreitol (DTT)-based displacement is widely utilized for separating ligands from their gold nanoparticle (AuNP) conjugates, a critical step for differentiating and quantifying surface-bound functional ligands and therefore the effective surface ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911354

18. Quantitative Analysis of Dendron-Conjugated Cisplatin-Complexed Gold Nanoparticles Using Scanning Particle Mobility Mass Spectrometry
Topic: Nanobiotechnology
Published: 5/8/2013
Authors: De-Hao D. Tsai, Tae Joon Cho, Sherrie R. Elzey, Julien C. Gigault, Vincent A Hackley
Abstract: We report a high-resolution and traceable method to quantify the drug loading on nanoparticle-based cancer therapeutics, and demonstrate this method using a model cisplatin functionalized dendron-gold nanoparticle (AuNP) conjugate. Electrospray diffe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912782

19. Quantitative Determination of Competitive Molecular Adsorption on Gold Nanoparticles Using Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy
Topic: Nanobiotechnology
Published: 6/28/2011
Authors: De-Hao D. Tsai, Melissa Davila-Morris, Frank W DelRio, Suvajyoti S. Guha, Vincent A Hackley, Michael R Zachariah
Abstract: Surface-sensitive quantitative studies of competitive molecular adsorption on nanoparticles were conducted using a modified Attenuated attenuated Total total Reflectionreflectance-Fourier Transform transform Infrared infrared (ATR-FTIR) spectroscopy ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907586

20. Resolving three-dimensional shape of sub-50 nm wide lines with nanometer-scale sensitivity using conventional optical microscopes
Topic: Nanobiotechnology
Published: 7/29/2014
Authors: Ravikiran Attota, Ronald G Dixson
Abstract: We experimentally demonstrate that the three-dimensional (3-D) shape variations of nanometer-scale objects can be resolved and measured with sub-nanometer scale sensitivity using conventional optical microscopes by analyzing 3-D optical data using th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908543



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