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Author: lee richter

Displaying records 71 to 80 of 86 records.
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71. Scanning Near-Field Infared Microscopy and Spectroscopy with a Broadband Laser Source
Published: 10/1/2000
Authors: Chris A Michaels, Lee J Richter, Richard R Cavanagh, Stephan J Stranick
Abstract: Near-field scanning optical microscopy (NSOM) is a powerful tool for the characterization of the optical properties of nanoscale objects, although pervasive artifacts often create difficulties in image interpretation. A three dimensional scanning NS ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831210

72. Scanning Near-Field Infrared Microscopy and Spectroscopy With a Broadband Laser Source
Published: 10/1/2000
Authors: Chris A Michaels, Stephan J Stranick, Lee J Richter, Richard R Cavanagh
Abstract: A scanning near-field microscopy that allows the fast acquisition of mid-infrared absorption spectra is described. The microscope couples the nanoscale spatial resolution of a scanning probe microscope with the chemical specificity of vibrational spe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831169

73. Assessment of Sensitivity Advances in Near-Field Raman Spectroscopy
Published: 9/1/2000
Authors: Chris A Michaels, C EJ Dentinger, Lee J Richter, D B Chase, Richard R Cavanagh, Stephan J Stranick
Abstract: Near-field Raman spectroscopy can be used to obtain images with both chemical specificity and the subwavelength spatial resolution of near-field scanning optical microscopy (NSOM). In the absence of signal intensification factors, such as surface en ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831194

74. Nonlinear Optics as a Detection Scheme for Biomimetic Sensors: SFG Spectroscopy of Hybrid Bilayer Membrane Formation
Published: 12/15/1999
Authors: T Petralli-Mallow, Kimberly A Briggman, Lee J Richter, John C. Stephenson, Anne L Plant
Abstract: Vibrational spectra of biomimetic membranes have been obtained using a broad-band approach to sum frequency generation (SFG). A new innovation, broad band SFG (BBSFG) allows for high quality SFG spectra with rapid collection times. With the BBSFG a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830132

75. Removing Optical Artifacts in Near-Field Scanning Optical Microscopy by Using a Three Dimensional Scanning Mode
Published: 9/1/1999
Authors: C. E. Jordan, Stephan J Stranick, Lee J Richter, Richard R Cavanagh
Abstract: We demonstrate a method of acquiring near-field scanning optical microscopy data that allows for the construction of three different types of images from one data set: topographic, constant-gap, and constant-height. This data set includes the topogr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831095

76. Influence of Secondary Tip Shape on Illumination-Mode Near-Field Scanning Optical Microscopy Images
Published: 8/1/1999
Authors: Lee J Richter, C EJ Dentinger, Richard R Cavanagh, Garnett W Bryant, A Liu, Stephan J Stranick, C D Keating, M J Natan
Abstract: We report illumination-mode near-field optical microscopy images of individual 80-115 nm diameter Au particles recorded with metal-coated fiber probes. It is found that the images are strongly influenced by the metal-coating thickness. This depend ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831088

77. Near-Field Scanning Optical Microscopy Incorporating Raman Scattering for Vibrational Mode Contrast
Published: 1/1/1999
Authors: C EJ Dentinger, Stephan J Stranick, Richard R Cavanagh, Lee J Richter, D B Chase
Abstract: Near-field scanning optical microscopy offers the ability to combine a broad range of spectral contrast features with spatial resolution that is an order of magnitude better than that set by the diffraction limit of the probe light. For many chemica ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831070

78. High Efficiency, Dual Collection Mode Near-Field Scanning Optical Microscope
Published: 12/1/1998
Authors: Stephan J Stranick, Lee J Richter, Richard R Cavanagh
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100664

79. Vibrationally-Resolved Sum-Frequency Generation With Broad Bandwidth Infrared Pulses
Published: 10/15/1998
Authors: Lee J Richter, T Petralli-Mallow, John C. Stephenson
Abstract: We present a novel procedure for vibrationally-resolved sum-frequency generation (SFG) in which a broad-bandwidth IR pulse is mixed with a narrow-bandwidth visible pulse. The resultant SFG spectrum is dispersed with a spectrograph and detected in pa ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831071

80. High Efficiency, Dual Collection Mode Near-Field Scanning Optical Microscope
Published: 7/1/1998
Authors: Stephan J Stranick, Lee J Richter, Richard R Cavanagh
Abstract: We have developed a near-field scanning optical microscope that provides simultaneous transmission and reflection mode measurements while concurrently recording a topograph of the sample surface. In this microscope design, an ellipsoidal cavity is u ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831044



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