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Molecular and BioPhotonics research lies at the intersection of physics, chemistry, engineering, and life sciences. The development of photonic techniques, which use light to detect, quantify, and image molecules and biomolecules, are used to establish the optical measurement science, modeling, and simulation tools critical to solving many real world applications.
The Molecular and BioPhotonics group research efforts focus on the development of the following:
New photonic spectroscopic and imaging techniques for enhanced detection of molecules and biomolecules;
Measurement standards for improving manufacturing quality and promoting acceptance of optical medical imaging technologies; and
The application of photonics techniques to real world problems.
Breast-conserving surgery, or lumpectomy, is a treatment for early-stage breast cancer. It’s important for surgeons to remove enough tissue around the tumor to
Medical imaging devices and systems must be calibrated to ensure uniformity and reliability of test results. A Standard Reference Material (SRM) or "phantom"
In efforts to limit the spread of disease while preserving privacy, an interdisciplinary research team at the National Institute of Standards and Technology
When you suffer a fall, an on-the-field collision or some other traumatic blow, the first thing the doctor will do is take an X-ray, CT scan or MRI to determine
NIST scientists, with collaborators at the University of Michigan, have designed and demonstrated a new and easily tunable, high-contrast scattering agent for
Trace gas detection, the ability to detect a scant quantity of a particular molecule—a whiff of formaldehyde or a hint of acetone—in a vast sea of others
The basic processes involved in elastic backscatter LIDAR are as follows. A laser emits a pulse of light (typically a few nanoseconds), and as the pulse propagates, the photons interact with molecules and aerosol particles. Some of these, the interactions with aerosols, such as Mie and Rayleigh
Use of synthetic cell membrane mimics allow simplification and complete control of a complicated system, and incorporation of selected elements under physiological conditions. We are furthering a technology originally developed at NIST using model lipid membranes supported on surfaces for
Nano-biophotonics consists of four broad areas: molecular bioimaging; nano-biosensors; multiplexed bioassays ; and nanotechnology-based medical practices for diagnosis and therapy. Success in these areas is challenged by the underlying complexity of biological systems. Major levels of complexity and
We advance measurement science and standards infrastructure to accelerate adoption of optical medical imaging technologies for surgical and clinical applications. Optical medical imaging promises to enhance and complement conventional medical imaging modalities that include magnetic resonance
Terahertz radiation interrogates the lowest frequency vibrational (phonon) modes of biomolecules. These modes characterize the incipient motions for large-scale conformational changes responsible for the backbone flexibility of protein, polynucleotide and polysaccharide. Thus, terahertz spectral
We developed a new technology to detect and quantify the extent of corrosion in embedded rebar using Terahertz (THz) and microwave spectroscopies. This new method exploits the likelihood that a number of iron corrosion products are antiferromagnetic and absorb THz and microwave radiation. In this
The editors introduce a Journal of Biomedical Optics (JBO) feature issue on "Hyperspectral imaging." The special issue features a number of important research
Ik Hwan Kwon, Ji Youn Lee, Fuyuki Tokumasu, Sang Won Lee, Jeeseong Hwang
Developments of anti-gametocyte drugs have been delayed due to insufficient understanding of gametocyte biology. We report a systematic workflow of data
Dual optical frequency comb spectroscopy allows for high speed, broadband measurements without any moving parts. Here, we combine differential chirp down
Jeeseong Hwang, Philip Cheney, Stephen Kanick, Hanh Le, David McClatchy, Helen Zhang, John Lu, Tae Joon Cho, Kimberly Briggman, David W. Allen, Wendy A. Wells, Brian Pogue
Hyperspectral dark-field microscopy (HSDFM) and data cube analysis algorithms demonstrate successful classification of various tissue types, including the
Enumeration of bacterial colonies on an agar plate is simple in concept, but automated colony counting is difficult due to variations in colony color, size
Dual electro-optic frequency comb (DOFC) methods are being developed to enhance detection sensitivity and speed for gas sensing in ultraviolet (UV) region. The
The continuous-wave terahertz spectrometer makes use of two near-infrared lasers. The first laser is a fixed-frequency cw ring Ti:Saph laser operating near 840
Dual electro-optic frequency comb (DOFC) methods are being developed to enhance detection sensitivity and speed for (bio)molecular sensing in THz region. Phase
Summary The Normal incidence Diffuse Optical Scatter Instrument (NDOSI) is a new facility for measuring the hemispherical reflectance and transmittance of
Kimberly A. Briggman
,
Chris Yung
,
Jeeseong C. Hwang
and
John H. Lehman
A photoacoustic photon meter includes: a photoacoustic generative array including carbon nanotubes disposed in a photoacoustic generating pattern, such that the carbon nanotubes: receive photons comprising optical energy, and produce thermal energy from the optical energy; and a superstratum
An optical phantom produces a time-resolved diffuse reflectance spectrum and includes: a light source; a spatial light modulator; and an optical delay line including optical fibers of different length that produce different time-of-flight distributions, such that different time-of-flight
“Multilayered Phantom Tissue Test Structure and Fabrication Process", Jeeseong Hwang, Christopher Stafford, Robert Chang, U.S. Patent No. US-9486179-B2, Nov. 8, 2016
“Chirped-Pulse Terahertz Spectroscopy", Eyal Gerecht, David F. Plusquellic and Kevin O. Douglass, U.S. Patent No. US_8748822_B1, June 20, 2014.
“A Fast-Switching Arbitrary Frequency Light Source for Broadband Spectroscopic Applications”, David Plusquellic, Kevin O. Douglass, Stephen Maxwell, Joseph T. Hodges, David A. Long, and Gar-wing Truong, U.S. Patent No. US_8642982_B2, Feb. 4, 2014.
“An Optical Two-Dimensional Servo-Loop for Laser Beam Stabilization and/or Position Encoding", W.A. Majewski and D.F. Plusquellic, U.S. Patent No. 4,994,661, Feb 19, 1991.