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Research Highlight Archive
Original use of a direct injection high efficiency nebulizer for the standardization of liquid fuels spray flames
R. Lemaire, M. Maugendre, T. Schuller, E. Therssen and J. Yon
It is of practical importance to lead laboratory-scale experiments allowing a better understanding of the impact of commercial fuels composition on the formation of combustion residues such as soot particles. To this end, a hybrid burner has been designed recently to burn high-speed sprays of small liquid fuel droplets.
A method for correlating in vivo prostate magnetic resonance imaging and histopathology using individualized magnetic resonance -based molds
Vijay Shah, Thomas Pohida, Baris Turkbey, Haresh Mani, Maria Merino, Peter A. Pinto, Peter Choyke, and Marcelino Bernardo
A method for the design and rapid manufacture of a patient specific tissue slicing device based on in vivo images in order to facilitate the process of correlating the images with histopathology is presented. The resulting histological specimens demonstrate good anatomical correlation with the MR images.
The integration of real and virtual magnetic resonance imaging experiments in a single instrument
Jonathan C. Sharp, Donghui Yin, Richard H. Bernhardt, Qunli Deng, Andrew E. Procca, Randy L. Tyson, Kan Lo, and Boguslaw Tomanek
We present the design of an integrated system for performing both real and virtual (simulated) magnetic resonance imaging (MRI) experiments. We emphasize the approaches used to maximize the level of integration and also the benefits that tight real-virtual integration brings for a scientific instrument.
A compact apparatus for studies of element and phase-resolved ferromagnetic resonance
D. A. Arena, Y. Ding, E. Vescovo, S. Zohar, Y. Guan, and W. E. Bailey
We present a compact sample holder equipped with electromagnets and high frequency transmission lines; the sample holder is intended for combined x-ray magnetic circular dichroism and ferromagnetic resonance measurements. Several applications of the combined technique are presented, demonstrating the flexibility of the experimental design.
Imaging fingerprint corrosion of fired brass shell casings
J. W. Bond
A newly developed method is presented for imaging fingerprint sweat corrosion of fired brass shell casings that reduces the degradation of the corroded fingerprint image. Degradation has been reduced by calculating a maximum angle of contact between the shell casing and a planar surface containing the imaging medium (graphite particles).
High resolution digital camera for infrared reflectography
Charles M. Falco
This paper describes the characteristics of a high resolution infrared (IR) imaging system with which nonspecialists can obtain IR reflectograms of works of art in a museum environment. The capabilities are illustrated with an example that reveals important new information about the working practices of a 16th century artist.
Generation of Mie size microdroplet aerosols with applications in laser-driven fusion experiments
A. P. Higginbotham, O. Semonin, S. Bruce, C. Chan, M. Maindi, T. D. Donnelly, M. Maurer, W. Bang, I. Churina, J. Osterholz, I. Kim, A. C. Bernstein, and T. Ditmire
A terawatt Ti:Al2O3 laser focused to 2×1019 W/cm2 was used to irradiate heavy water (D2O) aerosols composed of micron-scale droplets. Energetic deuterium ions, which were generated in the laser-droplet interaction, produced deuterium-deuterium fusion with approximately 2×103 fusion neutrons measured per joule of incident laser energy.
Light emitting diode fault detection using p-n junction photovoltaic effect
Ping Li, Yumei Wen, Youhai Cai, and Lian Li
An online noncontact fault detection method during light emitting diode (LED) chip packaging based on the photovoltaic effect in p-n junctions is proposed. Through characterization of the weak photovoltaic response in a lead frame with 20 LED chips, five LED faults, including chip defects (chip quality and chip contamination) and bonding deficiencies (disconnection, debonding, and rebonding), can be detected before packaging.
Quantification of unsteady heat transfer and phase changing process inside small icing water droplet
Zheyan Jin and Hui Hu
The transient behavior of the phase change process within small icing water droplets was revealed using molecular tagging thermometry. Such measurements improve our understanding of microphysical phenomena pertinent to ice formation and accretion processes as water droplets impinge onto wind turbine blades.
A multimodal spectroscopy system for real-time disease diagnosis
Obrad R. Šćepanović, Zoya Volynskaya, Chae-Ryon Kong, Luis H. Galindo, Ramachandra R. Dasari, and Michael S. Feld
The combination of reflectance, fluorescence, and Raman spectroscopy—termed multimodal spectroscopy (MMS)—provides complementary and depth-sensitive information about tissue composition. As such, MMS is a promising tool for disease diagnosis, particularly in atherosclerosis and breast cancer. We have developed an integrated MMS instrument and optical fiber spectral probe for simultaneous collection of all three modalities in a clinical setting.
Micro-differential thermal analysis detection of adsorbed explosive molecules using microfabricated bridges
Larry R. Senesac, Dechang Yi, Anders Greve, Jan H. Hales, Zachary J. Davis, Don M. Nicholson, Anja Boisen, and Thomas Thundat
A micro-differential thermal analysis technique can be used to differentiate explosive vapors from nonexplosives and additionally differentiate individual explosive vapors such as trinitrotoluene, pentaerythritol tetranitrate, and cyclotrimethylenetrinitromine. This technique provides a method for fast direct detection with a limit of detection of 600 x10−12 g.
Rev. Sci. Instrum. 80, 035102 (2009) | Read the Press release
