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You searched on: Author: Frank DelRio

Displaying records 1 to 10 of 37 records.
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1. Orthogonal Analysis of Functional Gold Nanoparticles for Biomedical Applications
Published: 9/11/2015
Authors: De-Hao D. Tsai, Yi-Fu Lu, Frank W DelRio, Tae Joon Cho, Suvajyoti S. Guha, Michael Russel Zachariah, Fan Zhang, Andrew John Allen, Vincent A Hackley
Abstract: We report a comprehensive strategy based on implementation of orthogonal measurement techniques to provide critical and verifiable material characteristics for functionalized gold nanoparticles (AuNPs) used in biomedical applications. Thiolated polye ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918793

2. Heterogeneity and length scale effects in PEG-based hydrogels
Published: 8/10/2015
Authors: Brian G Bush, Jenna M Shapiro, Frank W DelRio, Robert Francis Cook, Michelle L. Oyen
Abstract: Colloidal-probe spherical indentation load-relaxation experiments are conducted on poly(ethylene glycol) (PEG) hydrogel materials to quantify the steady-state mechanical properties and time-dependent transport properties in a single experiment. A pr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917666

3. Micromechanical Testing of Electroplated Gold Alloy Films using Theta-Like Specimens
Published: 7/2/2015
Authors: Mark McLean, William A Osborn, Oliver Boomhower, Christopher Keimel, Rebecca Kirkpatrick, Frank W DelRio
Abstract: Micromechanical testing of electroplated gold alloy films has been conducted using the theta specimen geometry. Specimens were formed by a standard combination of photolithography, electroplating, and deep reactive ion etching. Testing was perfor ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917891

4. Fracture strength of micro- and nano-scale silicon components
Published: 5/13/2015
Authors: Frank W DelRio, Robert Francis Cook, Brad Boyce
Abstract: Silicon devices are ubiquitous in many micro- and nano-scale technological applications, most notably microelectronics and microelectromechanical systems (MEMS). Despite their widespread usage, however, issues related to uncertain mechanical reliabi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917944

5. Design and test of reliable, high strength, ingressive polycrystalline silicon microgripper arrays
Published: 1/2/2015
Authors: Siddharth Hazra, J L Beuth, Grant A. Myers, Frank W DelRio, Maarten de Boer
Abstract: We present the design and extensive validation of a micromachined gripper array that enables reliable transmission of forces up to 10 milliNewtons. The gripper is constructed with polycrystalline silicon, a brittle material. Two ingressive snap-a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916443

6. Stress mapping of micromachined polycrystalline silicon devices via confocal Raman microscopy
Published: 6/15/2014
Authors: Grant A. Myers, Siddharth Hazra, Maarten de Boer, Chris A Michaels, Stephan J Stranick, Ryan P. Koseski, Robert Francis Cook, Frank W DelRio
Abstract: Stress mapping of micromachined polycrystalline silicon devices with components in various levels of uniaxial tension was performed. Confocal Raman microscopy was used to form two-dimensional maps of Raman spectral shifts, which exhibited variations ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915909

7. Controlled Formation and Characterization of Dithiothreitol-Conjugated Gold Nanoparticle Clusters
Published: 3/5/2014
Authors: De-Hao D. Tsai, Tae Joon Cho, Frank W DelRio, Justin M Gorham, Jiwen Zheng, Jiaojie Tan, Michael Russel Zachariah, Vincent A Hackley
Abstract: We report a systematic study of the controlled formation of discrete-size gold nanoparticle clusters (GNCs) by interaction with the reducing agent dithiothreitol (DTT). Asymmetric-flow field flow fractionation and electrospray differential mobility a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915014

8. Frictional properties of native and functionalized type I collagen thin films
Published: 10/2/2013
Authors: Koo-hyun Chung, Antony Chen, Christopher Anderton, Kiran Bhadriraju, Anne L Plant, Brian G Bush, Robert Francis Cook, Frank W DelRio
Abstract: Frictional properties of native and fibronectin (FN)-functionalized type I collagen (COL) thin films were studied via atomic force microscopy. The COL lateral contact stiffness was dependent only on the hydration state, indicating that shear deformat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914307

9. Decoupling small-scale roughness and long-range features on deep reactive ion etched silicon surfaces
Published: 9/19/2013
Authors: Frank W DelRio, Lawrence H Friedman, Michael S. Gaither, William A Osborn, Robert Francis Cook
Abstract: Roughness scaling of three different deep reactive ion etched (DRIE) silicon surfaces is investigated using atomic force microscopy. At small distances, height-height correlations H reveal power-law behavior with equal scaling exponents for all surf ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913812

10. Temperature-Programmed Electrospray-Differential Mobility Analysis for Characterization of Ligated Nanoparticles in Complex Media
Published: 8/12/2013
Authors: De-Hao D. Tsai, Frank W DelRio, John M Pettibone, Pin Ann Lin, Jiaojie Tan, Michael Russel Zachariah, Vincent A Hackley
Abstract: In this study, an electrospray-differential mobility analyzer (ES-DMA) was operated with an aerosol flow-mode, temperature-programmed approach to enhance its ability to characterize the particle size distributions (PSDs) of nanoscale particles (NPs) ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913860



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