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Article
Correction: An Active Geophone Sensor with Optimized State Variable Filter for Measuring Low-Band Frequencies
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Article
Open AccessGreen Manufacturing of Electrically-Tunable Smart Light-Weight Planar Optics: A Review
Evolving demands for compact, light-weight, and versatile optical systems across various industries require the facile integration of planar diffractive optics. For the manufacturing of diffractive optics, gre...
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Article
An Active Geophone Sensor with Optimized State Variable Filter for Measuring Low-Band Frequencies
An active vibration-isolation system (AVIS) utilizes a geophone sensor, a type of velocity sensor, to control microvibration. The structure of the sensor is modeled by mass, damper, and spring. The mathematica...
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Article
Open AccessSNR enhanced high-speed two-photon microscopy using a pulse picker and time gating detection
Two-photon microscopy (TPM) is an attractive biomedical imaging method due to its large penetration depth and optical sectioning capability. In particular, label-free autofluorescence imaging offers various ad...
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Article
Open AccessFeasibility and safety of non-contrast optical coherence tomography imaging using hydroxyethyl starch in coronary arteries
Intracoronary optical coherence tomography (OCT) requires injection of flushing media for image acquisition. Alternative flushing media needs to be investigated to reduce the risk of contrast-induced renal dys...
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Article
Open AccessUltra-thin light-weight laser-induced-graphene (LIG) diffractive optics
The realization of hybrid optics could be one of the best ways to fulfill the technological requirements of compact, light-weight, and multi-functional optical systems for modern industries. Planar diffractive...
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Article
Open AccessDeep learning-based image enhancement in optical coherence tomography by exploiting interference fringe
Optical coherence tomography (OCT), an interferometric imaging technique, provides non-invasive, high-speed, high-sensitive volumetric biological imaging in vivo. However, systemic features inherent in the bas...
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Article
Open AccessMassively parallel electro-optic sampling of space-encoded optical pulses for ultrafast multi-dimensional imaging
High-speed and high-resolution imaging of surface profiles is critical for the investigation of various structures and mechanical dynamics of micro- and nano-scale devices. In particular, recent emergence of v...
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Article
Imaging Technologies for Microfluidic Biochips
With the growing interest in biochips, numerous efforts have been made to recapitulate a more reliable and physiologically relevant environment within chips, resulting in significant advances in biochip techno...
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Article
Open AccessTargeted theranostic photoactivation on atherosclerosis
Photoactivation targeting macrophages has emerged as a therapeutic strategy for atherosclerosis, but limited targetable ability of photosensitizers to the lesions hinders its applications. Moreover, the molecu...
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Article
Open AccessRobust autofocusing for scanning electron microscopy based on a dual deep learning network
Scanning electron microscopy (SEM) is a high-resolution imaging technique with subnanometer spatial resolution that is widely used in materials science, basic science, and nanofabrication. However, conducting ...
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Article
Open AccessUtilization potential of intraluminal optical coherence tomography for the Eustachian tube
Imaging the Eustachian tube is challenging because of its complex anatomy and limited accessibility. This study fabricated a fiber-based optical coherence tomography (OCT) catheter and investigated its potenti...
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Article
Open AccessFlexible endoscopic micro-optical coherence tomography for three-dimensional imaging of the arterial microstructure
Micro-optical coherence tomography (µOCT) is a novel imaging approach enabling visualization of the microstructures of biological tissues at a cellular or sub-cellular level. However, it has been challenging t...
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Article
Open AccessComprehensive intravascular imaging of atherosclerotic plaque in vivo using optical coherence tomography and fluorescence lifetime imaging
Comprehensive imaging of both the structural and biochemical characteristics of atherosclerotic plaque is essential for the diagnosis and study of coronary artery disease because both a plaque’s morphology and...
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Article
Open AccessRemoval of back-reflection noise at ultrathin imaging probes by the single-core illumination and wide-field detection
Thin waveguides such as graded-index lenses and fiber bundles are often used as imaging probes for high-resolution endomicroscopes. However, strong back-reflection from the end surfaces of the probes makes it ...
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Article
Open AccessIntravascular optical imaging of high-risk plaques in vivo by targeting macrophage mannose receptors
Macrophages mediate atheroma expansion and disruption, and denote high-risk arterial plaques. Therefore, they are substantially gaining importance as a diagnostic imaging target for the detection of rupture-pr...
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Article
Diagnostic fiber-based optical imaging catheters
Fiber optics miniaturization and advances in signal acquisition and processing have allowed the development of fiber-based optical imaging catheters that permit instantaneous luminal organ imaging. This techni...
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Article
Compensation of motion artifacts in intracoronary optical frequency domain imaging and optical coherence tomography
Intracoronary optical coherence tomography and optical frequency domain imaging (OFDI) have been utilized for two-dimensional and three-dimensional imaging of vascular microanatomy. Image quality and the spati...
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Article
Intra-arterial catheter for simultaneous microstructural and molecular imaging in vivo
The future of imaging is the integration of function and anatomy. Hongki Yoo et al. have successfully done just that by combining two existing intravascular imaging techniques into a single catheter-based system....
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Article
Open AccessReflectance microscopy techniques for 3D imaging of the alveolar structure
