Hyuck Choo
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View article: Recent Advances of Metal‐Organic Frameworks and Derivatives for Rechargeable Aluminum Batteries
Recent Advances of Metal‐Organic Frameworks and Derivatives for Rechargeable Aluminum Batteries Open
In light of cost‐effectiveness, high volumetric capacity, and abundant supplies on Earth of aluminum metal, the rechargeable aluminum battery (RAB) represents a cutting‐edge alternative for energy storage devices. RABs have achieved signif…
View article: Building a Material Research Ecosystem Between Industries and Universities in South Korea (Adv. Mater. 43/2023)
Building a Material Research Ecosystem Between Industries and Universities in South Korea (Adv. Mater. 43/2023) Open
University-Industry Research Collaborations in South Korea In article number 2305933, Ki Tae Nam, Hyuck Choo, Deoksin Kil, Chul-Hong Kim, Cheolmin Park, and Woon-Ryeol Yu demonstrate the highlights the collaboration between universities an…
View article: Building Material Research Ecosystem Between Industries and Universities in Korea
Building Material Research Ecosystem Between Industries and Universities in Korea Open
This special issue highlights the collaboration between universities and industries in materials research in South Korea. Due to the extensive scope of the ongoing collaboration, we are focusing on a specific topic where university-industr…
View article: Building Material Research Ecosystem Between Industries and Universities in Korea (Adv. Mater. Technol. 20/2023)
Building Material Research Ecosystem Between Industries and Universities in Korea (Adv. Mater. Technol. 20/2023) Open
Special Issue University-Industry Research Collaborations in South Korea This special issue highlights the collaboration between universities and industries in materials research in South Korea. In the guest editorial article number 230102…
View article: Building a Material Research Ecosystem Between Industries and Universities in South Korea
Building a Material Research Ecosystem Between Industries and Universities in South Korea Open
This special issue highlights the collaboration between universities and industries in materials research in South Korea. Due to the extensive scope of the ongoing collaboration, we are focusing on a specific topic where university–industr…
View article: Nucleic Acid Amplification‐Based Technologies (NAAT)—Toward Accessible, Autonomous, and Mobile Diagnostics
Nucleic Acid Amplification‐Based Technologies (NAAT)—Toward Accessible, Autonomous, and Mobile Diagnostics Open
The ongoing pandemic and increasing frequency of infectious disease outbreaks due to climate change, urbanization, and global human migration have put great focus on nucleic acid amplification‐based diagnostic technologies (NAAT). These me…
View article: Spectral Barcode for Drug ClassificationEnabled with a Smartphone Raman Spectrometer
Spectral Barcode for Drug ClassificationEnabled with a Smartphone Raman Spectrometer Open
Measuring, recoding and analyzing of spectral information of materials as its unique finger print using a ubiquitous smart phone has been craved for by scientists and consumers. We demonstrated the concept of a spectral barcode in drug cla…
View article: On-chip Raman spectrometers using narrow band filter array combined with CMOS image sensors
On-chip Raman spectrometers using narrow band filter array combined with CMOS image sensors Open
Recent advancements in nanotechnology raise the feasibility of a miniaturized, portable Raman spectrometer with promising applications such as material identification, food safety monitoring, and health care. Miniaturizing Raman spectromet…
View article: Aperiodic optical phased array based on number theory
Aperiodic optical phased array based on number theory Open
The optical phased array has been developed to realize solid-state optical beam steering following the advent of silicon photonics. Thus far, its feasibility has lacked either steering quality or optical efficiency, and its optimal design …
View article: Aperiodic optical phased array based on number theory
Aperiodic optical phased array based on number theory Open
The optical phased array has been developed to realize solid-state optical beam steering following the advent of silicon photonics. Thus far, its feasibility has lacked either steering quality or optical efficiency, and its optimal design …
View article: Glasswing‐Butterfly‐Inspired Multifunctional Scleral Lens and Smartphone Raman Spectrometer for Point‐of‐Care Tear Biomarker Analysis (Adv. Sci. 5/2023)
Glasswing‐Butterfly‐Inspired Multifunctional Scleral Lens and Smartphone Raman Spectrometer for Point‐of‐Care Tear Biomarker Analysis (Adv. Sci. 5/2023) Open
Bioinspired Nanostructures How can glasswing butterflies make contact lenses more functional? In article number 2205113, Radwanul Hasan Siddique, Hyuck Choo, and co‐workers have shown that integrating glasswing butterfly wing‐inspired nano…
View article: Drug classification with a Spectral Barcode obtained with a Smartphone Raman Spectrometer
Drug classification with a Spectral Barcode obtained with a Smartphone Raman Spectrometer Open
Data base, Code, Figure 2, Figure 5, Supplementary Figure 2, Supplementary Figure 3, Supplementary Figure 6, Supplementary Figure 7, Supplementary Figure 8, Supplementary Figure 9, Supplementary Figure 10
View article: All-optical control of high-purity trions in nanoscale waveguide
All-optical control of high-purity trions in nanoscale waveguide Open
The generation of high-purity localized trions, dynamic exciton–trion interconversion, and their spatial modulation in 2D semiconductors are building blocks for the realization of trion-based optoelectronic devices. Here, we present a meth…
View article: Glasswing‐Butterfly‐Inspired Multifunctional Scleral Lens and Smartphone Raman Spectrometer for Point‐of‐Care Tear Biomarker Analysis
Glasswing‐Butterfly‐Inspired Multifunctional Scleral Lens and Smartphone Raman Spectrometer for Point‐of‐Care Tear Biomarker Analysis Open
Augmenting contact lenses with sensing capabilities requires incorporating multiple functionalities within a diminutive device. Inspired by multifunctional biophotonic nanostructures of glasswing butterflies, a nanostructured scleral lens …
View article: Structurally engineered colloidal quantum dot phosphor using TiO2 photonic crystal backbone
Structurally engineered colloidal quantum dot phosphor using TiO2 photonic crystal backbone Open
Photonic crystal (PhC) phosphor, in which the phosphor material is periodically modulated for an enhancement in color-conversion efficiency via resonant absorption of excitation photons, is a paradigm-shifting structural phosphor platform.…
View article: Drift-dominant exciton funneling and trion conversion in 2D semiconductors on the nanogap
Drift-dominant exciton funneling and trion conversion in 2D semiconductors on the nanogap Open
Understanding and controlling the nanoscale transport of excitonic quasiparticles in atomically thin two-dimensional (2D) semiconductors are crucial to produce highly efficient nano-excitonic devices. Here, we present a nanogap device to s…
View article: Two-dimensional beam steering with tunable metasurface in infrared regime
Two-dimensional beam steering with tunable metasurface in infrared regime Open
Tunable metasurfaces can change the optical properties of incident light at will such as amplitude, phase, and polarization in a time-dependent fashion. Ultrafast switching speed and the ability for the pixel size reduction of the tunable …
View article: Bulk-Si Platform: Born for DRAM, Upgraded With On-Chip Lasers, and Transplanted to LiDAR
Bulk-Si Platform: Born for DRAM, Upgraded With On-Chip Lasers, and Transplanted to LiDAR Open
The CMOS industry has been expecting silicon photonics to provide photonic and electro-photonic integrated circuits based on the CMOS processes and infrastructures for scalability of incumbent technology evolutions and creation of novel te…
View article: Real-time LIDAR imaging by solid-state single chip beam scanner
Real-time LIDAR imaging by solid-state single chip beam scanner Open
We present a real-time light detection and ranging (LIDAR) imaging by developing a single-chip solid-state beam scanner. The beam scanner is integrated with a fully functional 32-channel optical phased array, 36 optical amplifiers, and a t…
View article: Compact meta-spectral image sensor for mobile applications
Compact meta-spectral image sensor for mobile applications Open
We have demonstrated a compact and efficient metasurface-based spectral imager for use in the near-infrared range. The spectral imager was created by fabricating dielectric multilayer filters directly on top of the CMOS image sensor. The t…
View article: What drives the use of wearable healthcare devices? A cross-country comparison between the US and Korea
What drives the use of wearable healthcare devices? A cross-country comparison between the US and Korea Open
Objective Given the rapid growth of the wearable healthcare device market, we examined the associations among health-related and technology-related characteristics of using wearable healthcare devices and demonstrated how the associations …
View article: Low-threshold exciton transport and control in atomically thin semiconductors
Low-threshold exciton transport and control in atomically thin semiconductors Open
Understanding and controlling the nanoscale transport of excitonic quasiparticles in atomically thin 2D semiconductors is crucial to produce highly efficient nano-excitonic devices. Here, we present a nano-gap device to selectively confine…
View article: Subwavelength pixelated CMOS color sensors based on anti-Hermitian metasurface
Subwavelength pixelated CMOS color sensors based on anti-Hermitian metasurface Open
The demand for essential pixel components with ever-decreasing size and enhanced performance is central to current optoelectronic applications, including imaging, sensing, photovoltaics and communications. The size of the pixels, however, …
View article: Overcoming evanescent field decay using 3D-tapered nanocavities for on-chip targeted molecular analysis
Overcoming evanescent field decay using 3D-tapered nanocavities for on-chip targeted molecular analysis Open
Enhancement of optical emission on plasmonic nanostructures is intrinsically limited by the distance between the emitter and nanostructure surface, owing to a tightly-confined and exponentially-decaying electromagnetic field. This fundamen…