Park, YongKeun, Diez-Silva, Monica, Popescu, Gabriel, Lykotrafitis, George, Choi, Wonshik, Feld, Michael S., ...
Parasitization by malaria-inducing Plasmodium falciparum leads to structural, biochemical, and mechanical modifications to the host red blood cells (RBCs). To study these modifications, we...
Identify Superficial Foam Cells in Coronary Plaques (2006)
George O. Angheloiu, Joseph T. Arendt, Markus G. Müller, Abigail S. Haka, Jason T. Motz, Obrad R. Scepanovic, ...
Arteriosclerosis, Thrombosis, and Vascular Biology is published by the American Heart Association.
Harmonic phase-dispersion microscope with a Mach-Zehnder interferometer (2005)
Ahn, Andrew, Yang, Changhuei, Wax, Adam, Popescu, Gabriel, Fang-Yen, Christopher, Badizadegan, Kamran, ...
Harmonic phase-dispersion microscopy (PDM) is a new imaging technique in which contrast is provided by differences in refractive index at two harmonically related wavelengths. We report a new...
Diagnosing breast cancer by using Raman spectroscopy. (2005)
Haka, Abigail S., Shafer-Peltier, Karen E., Fitzmaurice, Maryann, Crowe, Joseph, Dasari, Ramachandra R., Feld, Michael S.
We employ Raman spectroscopy to diagnose benign and malignant lesions in human breast tissue based on chemical composition. In this study, 130 Raman spectra are acquired from ex vivo samples of human...
Fourier phase microscopy for investigation of biological structures and dynamics (2004)
Gabriel Popescu, Lauren P. Deflores, Joshua C. Vaughan, Kamran Badizadegan, Hidenao Iwai, Ra R. Dasari, ...
By use of the Fourier decomposition of a low-coherence optical image field into two spatial components that can be controllably shifted in phase with respect to each other, a new...
Correlation and cross-linking effects in imprinting sites for divalent adsorption in gels (2003)
Stancil, Kimani A., Feld, Michael S., Kardar, Mehran
This paper has been withdrawn by the author(s), as required by JPC-Journal of Physical Chemistry for reasons of publication.
Wax, Adam, Yang, Changhuei, Backman, Vadim, Kalashnikov, Maxim, Dasari, Ramachandra R., Feld, Michael S.
We employ a novel interferometer to measure the angular distribution of light backscattered by a turbid medium. Through comparison of the measured data with the predictions of Mie theory, we are able...
Yang, Changhuei, Wax, Adam, Dasari, Ramachandra R., Feld, Michael S.
We report a highly accurate phase-based technique for measuring arbitrarily long optical distance with subnanometer precision. The method employs a Michelson interferometer with a pair of...
Measurement of Frequency of Light and its Application. (2002)
This three-year contract has covered many rich areas of physics. Measurement of the velocity of light provided equipment and techniques for studying the anomalous Zeeman effect. Several important...
Feld,Michael S., Dasari,Ramachandra R., Thomas,John E.
A new idea is proposed for generating intense near millimeter wave (NMMW) radiation based on photon recycling in a two temperature system. In this method heat is converted into NMMW energy using...
Wax, Adam, Yang, Changhuei, Dasari, Ramachandra R., Feld, Michael S.
Dynamic light-scattering spectroscopy is used to study Brownian motion within highly scattering samples. The fluctuations of the light field that is backscattered by a suspension of polystyrene...
Yang, Changhuei, Wax, Adam, Hahn, Mariah S., Badizadegan, Kamran, Dasari, Ramachandra R., Feld, Michael S.
We report a highly sensitive means of measuring cellular dynamics with a novel interferometer that can measure motional phase changes. The system is based on a modified Michelson interferometer with...
Phase-dispersion optical tomography (2001)
Yang, Changhuei, Wax, Adam, Dasari, Ramachandra R., Feld, Michael S.
We report on phase-dispersion optical tomography, a new imaging technique based on phase measurements using low-coherence interferometry. The technique simultaneously probes the target with...
Wax, Adam, Yang, Changhuei, Dasari, Ramachandra R., Feld, Michael S.
We present a novel interferometer for measuring angular distributions of backscattered light. The new system exploits a low-coherence source in a modified Michelson interferometer to provide depth...
Interferometric phase-dispersion microscopy (2000)
Yang, Changhuei, Wax, Adam, Georgakoudi, Irene, Hanlon, Eugene B., Badizadegan, Kamran, Dasari, Ramachandra R., ...
We describe a new scanning microscopy technique, phase-dispersion microscopy (PDM). The technique is based on measuring the phase difference between the fundamental and the second-harmonic light in a...
Yang, Changhuei, Wax, Adam, Feld, Michael S.
Ballistic light, i.e., radiation that propagates undeflected through a turbid medium, undergoes a small change in phase velocity and exhibits unusual dispersion because of its wave nature. We use a...
Spatial coherence of forward-scattered light in a turbid medium (1999)
Yang, Changhuei, An, Kyungwon, Perelman, Lev T., Dasari, Ramachandra R., Feld, Michael S.
We study spatially coherent forward-scattered light propagating in a turbid medium of moderate optical depth (0-9 mean free paths). Coherent detection was achieved by using a tilted heterodyne...
Cavity ring-down technique and its application to the measurement of ultraslow velocities (1995)
An, Kyungwon, Yang, Changhuei, Dasari, Ramachandra R., Feld, Michael S.
We have developed a new ring-down technique that does not require a shutter to turn a probe laser on and off. With a rapid cavity scan we can measure a simple exponential cavity decay from which a...
Fluorescence tomographic imaging in turbid media using early-arriving photons and Laplace transforms
Wu, Jun, Perelman, Lev, Dasari, Ramachandra R., Feld, Michael S.
We present a multichannel tomographic technique to detect fluorescent objects embedded in thick (6.4 cm) tissue-like turbid media using early-arriving photons. The experiments use picosecond laser...
Diagnosing breast cancer by using Raman spectroscopy
Haka, Abigail S., Shafer-Peltier, Karen E., Fitzmaurice, Maryann, Crowe, Joseph, Dasari, Ramachandra R., Feld, Michael S.
We employ Raman spectroscopy to diagnose benign and malignant lesions in human breast tissue based on chemical composition. In this study, 130 Raman spectra are acquired from ex vivo samples of human...
Cellular organization and substructure measured using angle-resolved low-coherence interferometry.
Wax, Adam, Yang, Changhuei, Backman, Vadim, Badizadegan, Kamran, Boone, Charles W, Dasari, Ramachandra R, ...
We measure the organization and substructure of HT29 epithelial cells in a monolayer using angle-resolved low-coherence interferometry. This new technique probes cellular structure by measuring...
Fluorescence tomographic imaging in turbid media using early-arriving photons and Laplace transforms
Wu, Jun, Perelman, Lev, Dasari, Ramachandra R., Feld, Michael S.
We present a multichannel tomographic technique to detect fluorescent objects embedded in thick (6.4 cm) tissue-like turbid media using early-arriving photons. The experiments use picosecond laser...
Diagnosing breast cancer by using Raman spectroscopy
Haka, Abigail S., Shafer-Peltier, Karen E., Fitzmaurice, Maryann, Crowe, Joseph, Dasari, Ramachandra R., Feld, Michael S.
We employ Raman spectroscopy to diagnose benign and malignant lesions in human breast tissue based on chemical composition. In this study, 130 Raman spectra are acquired from ex vivo samples of human...
Cellular organization and substructure measured using angle-resolved low-coherence interferometry.
Wax, Adam, Yang, Changhuei, Backman, Vadim, Badizadegan, Kamran, Boone, Charles W, Dasari, Ramachandra R, ...
We measure the organization and substructure of HT29 epithelial cells in a monolayer using angle-resolved low-coherence interferometry. This new technique probes cellular structure by measuring...
Park, YongKeun, Diez-Silva, Monica, Popescu, Gabriel, Lykotrafitis, George, Choi, Wonshik, Feld, Michael S., ...
Parasitization by malaria-inducing Plasmodium falciparum leads to structural, biochemical, and mechanical modifications to the host red blood cells (RBCs). To study these modifications, we...
Optical imaging of cell mass and growth dynamics
Popescu, Gabriel, Park, YoungKeun, Lue, Niyom, Best-Popescu, Catherine, Deflores, Lauren, Dasari, Ramachandra R., ...
Using novel interferometric quantitative phase microscopy methods, we demonstrate that the surface integral of the optical phase associated with live cells is invariant to cell water content. Thus,...