Zobrazeno 1 - 10
of 352
pro vyhledávání: '"Choi Wonshik"'
Publikováno v:
Nanophotonics, Vol 11, Iss 9, Pp 2149-2158 (2022)
Exploiting multiple near-field optical eigenmodes is an effective means of designing, engineering, and extending the functionalities of optical devices. However, the near-field optical eigenmodes of subwavelength plasmonic nanostructures are often hi
Externí odkaz:
https://doaj.org/article/4257391fd1be4a50988dd5cbc7b48f92
Photoacoustic tomography (PAT) offers high optical contrast with acoustic imaging depth, making it essential for biomedical applications. While many all-optical systems have been developed to address limitations of ultrasound transducers, such as lim
Externí odkaz:
http://arxiv.org/abs/2410.07714
Over the past decade, reflection matrix microscopy (RMM) and advanced image reconstruction algorithms have emerged to address the fundamental imaging depth limitations of optical microscopy in thick biological tissues and complex media. In this study
Externí odkaz:
http://arxiv.org/abs/2407.02321
Autor:
Lim, Sumin, Kang, Sungsam, Hong, Jin-Hee, Jin, Youngho, Gupta, Kalpak, Kim, Moonseok, Kim, Suhyun, Choi, Wonshik, Yoon, Seokchan
Imaging in thick biological tissues is often degraded by sample-induced aberrations, which reduce image quality and resolution, particularly in super-resolution techniques. While hardware-based adaptive optics, which correct aberrations using wavefro
Externí odkaz:
http://arxiv.org/abs/2404.11849
Conventional fiber-bundle-based endoscopes allow minimally invasive imaging through flexible multi-core fiber (MCF) bundles by placing a miniature lens at the distal tip and using each core as an imaging pixel. In recent years, lensless imaging throu
Externí odkaz:
http://arxiv.org/abs/2402.00148
Second-harmonic generation (SHG) microscopy provides label-free imaging of biological tissues with unique contrast mechanisms, but its resolution is limited by the diffraction limit. Here, we present the first experimental demonstration of super-reso
Externí odkaz:
http://arxiv.org/abs/2304.14018
Autor:
Kang, Sungsam, Kwon, Yongwoo, Lee, Hojun, Kim, Seho, Hong, Jin Hee, Yoon, Seokchan, Choi, Wonshik
Multiple light scattering hampers imaging objects in complex scattering media. Approaches used in real practices mainly aim to filter out multiple scattering obscuring the ballistic waves that travel straight through the scattering medium. Here, we p
Externí odkaz:
http://arxiv.org/abs/2302.09503
Autor:
Ko, Hakseok, Kim, Junghoon, Hong, Jin-Hee, Cheon, Junyeob, Lee, Seungwoo, Jang, Mooseok, Choi, Wonshik
The imaging depth of deep-tissue optical microscopy is governed by the performance of the gating operation that suppresses the multiply scattered waves obscuring the ballistic waves. Although various gating operations based on confocal, time-resolved
Externí odkaz:
http://arxiv.org/abs/2211.02462
Imaging an object embedded within a scattering medium requires the correction of complex sample-induced wave distortions. Existing approaches have been designed to resolve them by optimizing signal waves recorded in each 2D image. Here, we present a
Externí odkaz:
http://arxiv.org/abs/2210.07462
Shaping the wavefront of an incident wave to a complex scattering medium has demonstrated interesting possibilities, such as sub-diffraction wave focusing and enhancing light energy delivery. However, wavefront shaping has mainly been based on the co
Externí odkaz:
http://arxiv.org/abs/2210.07459