Zobrazeno 1 - 10
of 80
pro vyhledávání: '"KyeoReh Lee"'
Publikováno v:
Light: Science & Applications, Vol 12, Iss 1, Pp 1-13 (2023)
High-resolution X-ray sample field image is directly retrieved in a single shot using the mathematical relations of spatially pseudorandom (i.e., speckle) fields.
Externí odkaz:
https://doaj.org/article/9daa2e40aaaa49b7bb031eab4b82126c
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
Abstract Absorption spectroscopy is widely used to detect samples with spectral specificity. Here, we propose and demonstrate a method for enhancing the sensitivity of absorption spectroscopy. Exploiting multiple light scattering generated by a boron
Externí odkaz:
https://doaj.org/article/b602a22dec2a4983a0184453a190807b
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
Non-resonant lasers have many advantages since the allow for a diverse set of architectures and gain media, but their application is limited due to their low directionality and efficiency. Here, the authors present a scattering cavity laser with a si
Externí odkaz:
https://doaj.org/article/557d260ba4714d239653226d41b0ad93
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-8 (2019)
3D holographic displays still face many challenges such as small viewing angle and image size. Here the authors present a scalable method for displaying large holographic images with a wide viewing angle using a wide-angle diffracting element in a fl
Externí odkaz:
https://doaj.org/article/90c5731f032b4ad18796631522b1bdd0
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
Abstract A novel optical holographic technique is presented to simultaneously measure both the real and imaginary components of the complex refractive index (CRI) of a protein solution over a wide visible wavelength range. Quantitative phase imaging
Externí odkaz:
https://doaj.org/article/bddb1d2219564fa89458f237656314a4
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
Abstract Intact optical information of an object delivered through an imaging system is deteriorated by imperfect optical elements and unwanted defects. Image deconvolution has been widely exploited as a recovery technique due to its practical feasib
Externí odkaz:
https://doaj.org/article/1893efff8aaf4de9a8e1958c405349b0
Autor:
KyeoReh Lee, YongKeun Park
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-7 (2016)
Holographic techniques store and retrieve complete optical information, but the requirement of a reference beam can make the process complicated and sensitive to noise. Here, the authors develop a reference-free method that harnesses self-interferenc
Externí odkaz:
https://doaj.org/article/bf8098e5070a4105a302d10bbe2d1dd1
Publikováno v:
APL Photonics, Vol 3, Iss 10, Pp 100901-100901-19 (2018)
Multiple light scattering has been regarded as a barrier in imaging through complex media such as biological tissues. Owing to recent advances in wavefront shaping techniques, optical imaging through intact biological tissues without invasive procedu
Externí odkaz:
https://doaj.org/article/487513c541a6421291f81c8a3f94e5cc
Publikováno v:
Sensors, Vol 20, Iss 11, p 3147 (2020)
The development of optical and computational techniques has enabled imaging without the need for traditional optical imaging systems. Modern lensless imaging techniques overcome several restrictions imposed by lenses, while preserving or even surpass
Externí odkaz:
https://doaj.org/article/6a49fd35954845939841086e943ea03b
Autor:
Hyunjoo Park, YoungJu Jo, Gyuyoung Chang, Sangyun Lee, Sangyeon Cho, JiHan Heo, Jaehwang Jung, Kyoohyun Kim, KyeoReh Lee, YongKeun Park
Publikováno v:
Sensors, Vol 13, Iss 4, Pp 4170-4191 (2013)
A cellular-level study of the pathophysiology is crucial for understanding the mechanisms behind human diseases. Recent advances in quantitative phase imaging (QPI) techniques show promises for the cellular-level understanding of the pathophysiology
Externí odkaz:
https://doaj.org/article/00594dc602a74beda090db724376ef6b