Article
Nanoscience & Nanotechnology
Aby Cheruvathoor Poulose, Giorgio Zoppellaro, Ioannis Konidakis, Efthymis Serpetzoglou, Emmanuel Stratakis, Ondrej Tomanec, Matthias Beller, Aristides Bakandritsos, Radek Zboril
Summary: This study reports a low-cost plasmonic photocatalyst based on earth-abundant metals that achieves selective hydrogenation of nitroaromatics through the combined action of photothermal effects and hot holes. The catalyst operates under solar light and delivers high conversion rates by matching energy levels. The findings have significant implications for improving production rates in industries such as polymers, pharmaceuticals, agrochemicals, and dyes.
NATURE NANOTECHNOLOGY
(2022)
Article
Chemistry, Physical
Ke An, Jingtian Hu, Jianfang Wang
Summary: Plasmonic photocatalysis has attracted attention in enhancing solar-to-chemical conversion efficiency. However, current plasmonic photocatalysts have limited efficiency due to rapid recombination and the Schottky barrier. A new type of plasmonic photocatalyst, the Schottky-barrier-free plasmonic photocatalyst, has been proposed to overcome these limitations.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Chenghao Xin, Zhelu Hu, Zhuoqun Fang, Mahima Chaudhary, Hengyang Xiang, Xiangzhen Xu, Lionel Aigouy, Zhuoying Chen
Summary: Solution-processed organic and organic-inorganic hybrid thermoelectric devices show strong potential in energy harvesting and smart textile integration, especially when utilizing the photothermal effect of colloidal plasmonic gold nanoparticles. The optimized hybrid photothermoelectric generators demonstrate significantly increased voltage and power output, offering bright prospects for the development of energy harvesting smart textiles.
MATERIALS TODAY ENERGY
(2021)
Article
Chemistry, Physical
Rocio A. Gonzalez Ochea, Ezequiel R. Encina
Summary: The study investigates the light-harvesting properties of hybrid nanostructures composed of plasmonic metals and semiconductor oxides through simulations. The results show that the absorbed photon flux is influenced by the type and size of the plasmonic metal, as well as the shell thickness. Additionally, a correlation is found between the photon flux and a predictor variable K.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Review
Chemistry, Multidisciplinary
Dong Liu, Can Xue
Summary: Plasmonic photocatalysis is a promising approach for solar energy transformation, which can enhance photocatalytic efficiency by optimizing the composition, spacing, and orientation of metal nanostructures. Integrating metal nanostructures with semiconductor photocatalysts can accelerate exciton generation and separation, thus improving photocatalytic efficiency.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Sebastien Hanauer, Ines Massiot, Adnen Mlayah, Franck Carcenac, Jean-Baptiste Doucet, Selyan Beldjoudi, Ihar Faniayeu, Alexandre Dmitriev
Summary: Photovoltaics have limitations in their efficiency due to the lack of absorption of the near-infrared and infrared solar spectrum. This study presents an approach using plasmonic nanoantennas for photothermal conversion of solar infrared radiation, with efficient results achieved through shape engineering. The use of nanocone plasmonic antennas in large-scale low-cost fabrication processes also showed significant temperature increase under solar infrared illumination, offering potential for the development of hybrid photovoltaic-thermoelectric systems.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Sebastien Hanauer, Ines Massiot, Adnen Mlayah, Franck Carcenac, Jean-Baptiste Doucet, Selyan Beldjoudi, Ihar Faniayeu, Alexandre Dmitriev
Summary: The study presents an approach for photothermal conversion of solar infrared radiation using plasmonic nanoantennas. Efficient solar infrared spectrum harvesters were identified through numerical calculations. In a large-scale low-cost approach, nanocone plasmonic antennas achieved a significant temperature increase under solar infrared illumination. These results pave the way for the development of hybrid photovoltaic-thermoelectric systems with optimal utilization of the solar spectrum.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Zhijia Geng, Yifan Yu, Abraham Joey Offen, Jie Liu
Summary: This research introduces a new index, overall light effectiveness, to comprehensively evaluate the combined impact of different light effects on catalytic reactions. By systematically varying the thickness of catalyst layers, the study isolates and optimizes both thermal and non-thermal effects to achieve maximum light enhancement. Experiments on carbon dioxide hydrogenation reaction demonstrate the potential of this approach in designing catalyst systems with optimal combinations of heating and light illumination, particularly with broadband light illumination like sunlight, for the most economical light-to-matter conversion in plasmonic catalysis.
Article
Materials Science, Multidisciplinary
Pengfei Cheng, Joachim Doell, Henry Romanus, Hongguang Wang, Peter A. van Aken, Dong Wang, Peter Schaaf
Summary: This article introduces a new noble-metal-free Al/AlN plasmonic nanostructure fabricated by reactive magnetron sputtering at an elevated temperature of 200 degrees C. The 3D Al/AlN nanostructures demonstrate highly efficient and broadband absorption as well as a strong photothermal conversion effect, indicating their potential in light-induced thermal imaging and photo-thermoelectric power generation. This novel fabrication method and the developed Al/AlN nanostructure offer a promising alternative to noble-metal plasmonic nanostructures for photonic applications.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Heeyoung Kim, Hyewon Park, Mincheol Kang, Jeong Young Park
Summary: Plasmonic photoelectrochemical (PEC) water splitting has attracted great interest due to its ability to overcome the limitations of semiconductors in terms of light absorption. In this study, a Pt/Ag/TiO2 metal-semiconductor Schottky nanodiode was designed and fabricated as a photoanode to investigate the role of plasmonic hot carriers in plasmonic water splitting. By combining the designed PEC cell system with the nanodiode, it was demonstrated that the plasmonic hot carriers from Ag played a decisive role in the enhancement of photocatalytic efficiency by contributing to the oxygen evolution reaction.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Pengfei Cheng, Mario Ziegler, Valentin Ripka, Honglei Wang, Kilian Pollok, Falko Langenhorst, Dong Wang, Peter Schaaf
Summary: This study presents an efficient photo-thermoelectric (P-TE) conversion technology, which achieves scalable solar energy conversion by integrating a light absorber and commercial thermoelectric modules. The developed light absorber, consisting of silica-silver hybrid structures, achieves ultra-high absorption through the attachment of silver nanoparticles on three-dimensional SiO2 nanostructures. Experimental results demonstrate that this technology can achieve high voltage density, sufficient to power various electronic devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
He Ren, Jing-Liang Yang, Wei-Min Yang, Han-Liang Zhong, Jia-Sheng Lin, Petar M. Radjenovic, Lan Sun, Hua Zhang, Juan Xu, Zhong-Qun Tian, Jian-Feng Li
Summary: This study focuses on the development of core-shell plasmonic photocatalysts based on CdS, aiming to improve energy conversion efficiency through hot electron injection and plasmonic coupling effects. The plasmonic nanocomposite photocatalyst showed a significant enhancement in catalytic performance, surpassing traditional CdS by more than 200 times. This work provides valuable insights into the mechanisms of SPR enhanced photocatalysis and offers an effective strategy for designing plasmonic photocatalysts.
ACS MATERIALS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Rachel C. Elias, Suljo Linic
Summary: Plasmonic metal nanoparticles exhibit localized surface plasmon resonance (LSPR) and can enhance the rate of chemical reactions. In this study, the LSPR-induced rate enhancement of the CO oxidation reaction on Ag nanoparticle catalysts was investigated, revealing the critical role of local effects in driving LSPR-induced chemical reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Yuanhai Lin, Heng Guo, Deqing Che, Junsheng Wang
Summary: This paper presents a quasi-planar chiral metamaterial made of metal-insulator-metal (MIM) tetramer arrays that support multiple plasmon modes and achieve significant chiroptical responses. The chiroptical responses can be controlled by adjusting the insulator thickness, switching between near-field and far-field coupling regimes. Numerical calculations reveal that near-field coupling dominates at small insulator thickness, while far-field coupling becomes dominant at large spacing due to phase retardation. The tunable plasmonic chirality of the quasi-planar chiral metamaterial enables efficient light modulation for polarization conversion from circular to elliptical/linear polarization.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Sanjeevan Rajagopal, Suresh Thangudu, June-Yen Feng, Pavithra Sriram, Ta-Jen Yen, Kuo Chu Hwang
Summary: This study reports the synthesis of high-index faceted plasmonic Au nano-branched 12 tip nanostars, which can absorb the whole spectral region of electromagnetic radiation (UV-vis-NIR), for efficient water splitting. The plasmonic hot spots on the Au 12 tip nanostars significantly enhance the photoelectrochemical oxygen evolution reaction (OER) under NIR light (915 nm) with long-term stability.
Article
Engineering, Biomedical
Jae Hee Lee, Yuri Ahn, Han Eol Lee, You Na Jang, A. Yeon Park, Shinho Kim, Young Hoon Jung, Sang Hyun Sung, Jung Ho Shin, Seung Hyung Lee, Sang Hyun Park, Ki Soo Kim, Min Seok Jang, Beom Joon Kim, Sang Ho Oh, Keon Jae Lee
Summary: A wearable surface-lighting micro-LED (S mu LED) photostimulator is reported for skin care and cosmetic applications. The S mu LEDs maximize photostimulation effectiveness on the skin surface by uniform irradiation, high flexibility, and thermal stability, and its anti-melanogenic effect is confirmed through experiments.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yoo Min Shin, Ji Hyeon Lee, Geon Yeong Kim, Hae Mee Ju, Yeon Sik Jung, Jea Woong Jo, Min-Jae Choi
Summary: In this study, all-inorganic perovskite nanowires with minimized surface defects were synthesized using a dual-phase passivation strategy. These nanowires were used as an interfacial layer in perovskite solar cells, resulting in an increased power conversion efficiency.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yonas Assefa Eshete, Eunji Hwang, Junhyung Kim, Phuong Lien Nguyen, Woo Jong Yu, Bai Sun Kong, Min Seok Jang, Jaekwang Lee, Suyeon Cho, Heejun Yang
Summary: Researchers have developed a polymorphic memtransistor based on Mo0.91W0.09Te2, which allows tuning of the lattice and electronic structures of the channel material to achieve metallic or semiconducting phases. This memtransistor exhibits high on/off ratio, low subthreshold swing, and various memristive behaviors, making it suitable for neuromorphic and in-memory computing applications.
ADVANCED MATERIALS
(2023)
Correction
Nanoscience & Nanotechnology
Sergey G. Menabde, Min Seok Jang
NATURE NANOTECHNOLOGY
(2023)
Article
Optics
Chanhyung Park, Jeongmin Shin, Sanmun Kim, Songju Lee, Juho Park, Jaehyeok Park, Sehong Park, Seunghyup Yoo, Min Seok Jang
Summary: Researchers propose a new simulation method, called the diffraction matrix method (DMM), that accurately predicts the optical characteristics of periodically corrugated OLEDs with significantly faster calculation speed. The method decomposes the light emitted by a dipolar emitter into plane waves and tracks the diffraction behavior using diffraction matrices. The calculated optical parameters show quantitative agreement with those predicted by the finite-difference time-domain (FDTD) method. Furthermore, the method evaluates the wavevector-dependent power dissipation of a dipole and identifies the loss channels inside OLEDs in a quantitative manner.
Article
Physics, Multidisciplinary
Dongwook Go, Daegeun Jo, Kyoung-Whan Kim, Soogil Lee, Min-Gu Kang, Byong-Guk Park, Stefan Bluegel, Hyun-Woo Lee, Yuriy Mokrousov
Summary: Contrary to the common assumption, the orbital response in ferromagnets can exhibit remarkable long-ranged behavior, even in the presence of strong crystal field potential and orbital quenching. By studying a bilayer structure composed of a nonmagnet and a ferromagnet, it is found that induced orbital angular momentum can extend far beyond the spin dephasing length, even when an external electric field is applied only on the nonmagnet. This behavior is attributed to nearly degenerate orbital characters imposed by crystal symmetry, which form hotspots for the intrinsic orbital response. The findings suggest the potential use of long-range orbital response in orbitronic device applications.
PHYSICAL REVIEW LETTERS
(2023)
Article
Construction & Building Technology
Tam Minh Phan, Min-Seok Jang, Jung-Woo Seo, Jae-Hyeong Yoon, Dae-Wook Park, Tri Ho Minh Le
Summary: This study investigates two methods, rain sensor and deep learning, for detecting black ice on road surfaces, considering the influence of environmental conditions on black ice formation. Results showed that the rain sensor method can detect black ice formation through electrical resistance. Lower air voids in asphalt concrete increase the chance of black ice formation, while humidity has a negligible effect. A vehicle module using deep learning achieves 90% accuracy in detecting black ice. Findings also indicate that environmental temperature affects the melting time and area of black ice.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Article
Nanoscience & Nanotechnology
Daekyu Koh, Jaimin Kang, Taehwan Kim, Jisung Lee, Sujung Noh, Hansaem Lee, JoonHyun Kwon, Soogil Lee, Jongsun Park, Byong-Guk Park
Summary: This study demonstrates the improved reliability of SOT-based PUFs against external magnetic fields with write-back operation (WBO). A PUF consisting of 8 x 4 array Hall-bar devices with a Ta/CoFeB/MgO structure is fabricated, where the random distribution of the SOT switching current serves as an entropy source. The introduction of WBO enhances the robustness against magnetic fields and maintains the entropy value close to unity under external magnetic fields.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Jungkyun Kim, Hakseung Rhee, Myeong Won Son, Juseong Park, Gwangmin Kim, Hanchan Song, Geunwoo Kim, Byong-Guk Park, Jeong Hwan Han, Kyung Min Kim
Summary: Due to increased resistance and poor reliability at a sub-10 nm width, Cu interconnects are being replaced by Ru and Mo as the next interconnection material candidates. This study evaluated the electromigration (EM) reliability of Ru and Mo for next-generation interconnection applications. The findings showed that Ru has enhanced reliability compared to conventional Cu interconnects, making it a promising candidate.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Minhyeok Kim, Se Hun Joo, Meihui Wang, Sergey G. Menabde, Da Luo, Sunghwan Jin, Hyeongjun Kim, Won Kyung Seong, Min Seok Jang, Sang Kyu Kwak, Sun Hwa Lee, Rodney S. Ruoff
Summary: This study presents an electrochemical method for functionalizing single-crystal graphene on copper foils. The transfer-free method enables precise and efficient functionalization of graphene. The study also compares the reactivity of graphene on different facets and explains the differences in reaction rates using work function measurements.
Article
Chemistry, Multidisciplinary
Gabriel R. Jaffe, Gregory R. Holdman, Min Seok Jang, Demeng Feng, Mikhail A. Kats, Victor Watson Brar
Summary: Laser sails powered by ground-based lasers could achieve relativistic speeds, allowing for fast interstellar travel. However, interplanetary dust poses a significant threat to the survival of laser sails during acceleration. Simulations demonstrate that a single dust particle can trigger a thermal runaway process, destroying the entire sail. Proposed mitigation strategies include increasing thermal conductivity and isolating absorptive regions of the sail.
Article
Multidisciplinary Sciences
Seungjun Lee, Dongjea Seo, Sang Hyun Park, Nezhueytl Izquierdo, Eng Hock Lee, Rehan Younas, Guanyu Zhou, Milan Palei, Anthony J. Hoffman, Min Seok Jang, Christopher L. Hinkle, Steven J. Koester, Tony Low
Summary: This study demonstrates near-perfect light absorbers (NPLAs) using two or three uniform atomic layers of transition metal dichalcogenides (TMDs), by taking advantage of the exceptional band nesting effect in TMDs and a Salisbury screen geometry. The NPLAs achieved absorbance values of at least 99% without requiring complex nanolithography, making them suitable for practical applications on large-area platforms.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Geunwoo Kim, Soogil Lee, Sanghwa Lee, Byonggwon Song, Byung-Kyu Lee, Duhyun Lee, Jin Seo Lee, Min Hyeok Lee, Young Keun Kim, Byong-Guk Park
Summary: This study investigates the effects of annealing on the tunnel magnetoresistance ratio in CoFeB/MgO/CoFeB-based magnetic tunnel junctions with different capping layers and correlates them with microstructural changes. The findings indicate that the proper selection of a capping layer can increase the annealing temperature of MTJs, making it compatible with the complementary metal-oxide-semiconductor backend process.
Article
Multidisciplinary Sciences
Sanmun Kim, Chanhyung Park, Shinho Kim, Haejun Chung, Min Seok Jang
Summary: This work reports on the influence of design parameters on the optical efficiency of metasurface-based color splitters, as well as the possibility of fabricating them in legacy fabrication facilities with low structure resolutions.
Article
Optics
Junghoon Jahng, Sunho Lee, Seong-Gu Hong, Chang Jun Lee, Sergey G. Menabde, Min Seok Jang, Dong-Hyun Kim, Jangyup Son, Eun Seong Lee
Summary: This study reports, for the first time, the nanoscopic imaging of anomalous infrared phonon enhancement in bilayer graphene due to charge imbalance between its top and bottom layers. By modifying the multifrequency atomic force microscope platform, a hybrid nanoscale optical-electrical force imaging system is created, enabling the observation of correlation between IR response, doping level, and topographic information of graphene layers. The study also demonstrates the control of charge imbalance and diagnosis of subsurface cracks in few-layer graphene through chemical and mechanical approaches.
LIGHT-SCIENCE & APPLICATIONS
(2023)
