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A Thermally Stable, Infrared-Transparent High-Sulfur-Containing Polymer for High Aspect-Ratio Nanostructured MWIR Polarizer

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Small 2025年 e2504090页

作者： Kang, Minjeong Jang, Wontae Lee, Junghyun Kim, Sanghyun Lee, Gyuwon Choi, Keonwoo Kim, Jun Oh Ku, Zahyun Ahn, Junhyoung Lim, Hyungjun Lim, Jeewoo Wie, Jeong Jae Im, Sung Gap Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro Yuseong-gu Daejeon 34141 South Korea Advanced Instrumentation Institute Korea Research Institute of Standards and Science 267 Gajeong-ro Yuseong-gu Daejeon 34113 South Korea Apex Microdevices 4871 Misrach Ct West Chester 45069 OH United States Department of Nano Manufacturing Technology Korea Institute of Machinery & Materials (KIMM) 156 Gajeongbuk-ro Yuseong-gu Daejeon 34103 South Korea Department of Chemistry and Research Institute for Basic Science Kyung Hee University 26 Kyungheedae-ro Dongdaemun-gu Seoul 02447 South Korea Human-Tech Convergence Program Hanyang University 222 Wangsimni-ro Seongdong-gu Seoul 04763 South Korea Department of Chemical Engineering State University of New York College of Environmental Sciences and Forestry Syracuse NY 13210 United States Graduate school of Semiconductor Technology Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro Yuseong-gu Daejeon 34141 South Korea

Infrared (IR) polarizer is essential for thermal imaging applications such as mobility and military operations. High-sulfur-containing polymers have emerged as promising candidates for IR polarizers due to their mid-wave IR (MWIR) transparency, addressing the limitations of inorganic materials, including their brittleness and high cost. However, poor thermal stability and limited IR range restrict their applicability. This study introduces a glassy IR polarizer based on poly(sulfur-co-hexavinyl disiloxane) (pSHVDS), a highly crosslinked sulfur-rich polymer synthesized via sulfur chemical vapor deposition (sCVD). Self-crosslinking of pSHVDS at high temperatures provided thermal stability during nanoimprint lithography, enabling the fabrication of high-fidelity nano-grating patterns (400 nm pitch, 150 nm width, 300 nm height). The broad transmittance and high aspect ratio of the nanopattern enabled the glassy-pSHVDS MWIR polarizer to achieve over 50% transmittance of transverse magnetic field (T_TM) and an extinction ratio (ER) exceeding 6000 across a broad IR range (3-8 µm). An additional pSHVDS anti-reflection coating further enhanced T_TM to 84% and ER to 7200 at a wavelength of 4 µm, the highest ER reported for organic MWIR polarizers to date. The polarizer maintained its performance after 24 h at 100 °C, demonstrating exceptional thermal stability. These findings underscore the potential of glassy pSHVDS-based polarizers for IR applications. © 2025 Wiley-VCH GmbH.

关键词： bilayer wire grid polarizer high sulfur-content polymer (HSCP) MWIR polarizer sulfur chemical vapor deposition (sCVD) thermal stability

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On-Chip Perovskite Nanocrystal Laser Integrated with Long-Range Surface Plasmon Polariton Waveguide by Etching-Free Lithographic Patterning

On-Chip Perovskite Nanocrystal Laser Integrated with Long-Ra...

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2022 JSAP-Optica Joint Symposia, JSAP 2022

作者： Lee, Yang-Chun Lin, Hsin-Chang Lin, Cheng-Chieh Ho, Ya-Lun Xing, Di Chen, Mu-Hsin Lin, Bo-Wei Chen, Li-Yin Chen, Chun-Wei Delaunay, Jean-Jacques School of Engineering The University of Tokyo Japan Department of Photonics National Sun Yat-sen University Taiwan International Graduate Program of Molecular Science and Technology National Taiwan University Academia Sinica Taiwan Department of Materials Science and Engineering National Taiwan University Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taiwan Department of Photonics National Yang Ming Chiao Tung University Taiwan Center of Atomic Initiative for New Materials National Taiwan University Taiwan

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Plasmonic Nanolaser by Silver Nanowire Embedded in CsPbBr3 Quantum Dots

Plasmonic Nanolaser by Silver Nanowire Embedded in CsPbBr3 Q...

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JSAP-OSA Joint Symposia, JSAP 2021

作者： Xing, Di Lin, Cheng-Chieh Won, Phillip Xiang, Rong Chen, Tzu-Pei A. Kamal, A. Syazwan Lee, Yang-Chun Ho, Ya-Lun Maruyama, Shigeo Ko, Seung Hwan Chen, Chun-Wei Delaunay, Jean-Jacques School of Engineering The University of Tokyo Japan International Graduate Program of Molecular Science and Technology National Taiwan University Taiwan Department of Materials Science and Engineering National Taiwan University Taiwan Department of Mechanical Engineering Seoul National University Korea Republic of Center of Atomic Initiative for New Materials National Taiwan University Taiwan

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Effects of nanopores and sulfur doping on hierarchically bunched carbon fibers to protect lithium metal anode

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Carbon Energy 2021年第5期3卷 784-794页

作者： Ji In Jung Sunwoo Park Son Ha Se Youn Cho Hyoung-Joon Jin Young Soo Yun Program in Environmental and Polymer Engineering Inha UniversityIncheonSouth Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoulSouth Korea Carbon Composite Materials Research Center Korea Institute of Science and TechnologyWanju-gunJeollabuk-doSouth Korea Department of Polymer Science and Engineering Inha UniversityIncheonSouth Korea Department of Integrative Energy Engineering Korea UniversitySeoulSouth Korea

Studies on three-dimensional structured carbon templates have focused on how to guide homogeneous lithium metal nucleation and growth for lithium metal anodes(LMAs).However,there is still insufficient evidence for a key factor to achieve their high electrochemical ***,the effects of nanopores and sulfur doping on carbon-based nanoporous host(CNH)electrode materials for LMAs were investigated using natural polymer-derived *** pore-filling behaviors of lithium metal in the nanopores of the CNH electrode materials were first observed by ex situ scanning electron microscopy analysis,where the protective lithium metal nucleation and growth process led to significantly high Coulombic efficiency(CE)of~99.4%and stable 600 *** addition,a comparison study of CNH and sulfurdoped CNH(S-CNH)electrodes,which differ only in the presence or absence of sulfur,revealed that sulfur doping can cause lower electrochemical series resistance,higher CE value,and better cycling stability in a wide range of current densities and number of ***,S-CNH-based LMAs showed high electrochemical performance in full-cell Li-S battery tests using a sulfur copolymer cathode,where a high energy density of 1370Wh kgelectrode−1 and an excellent power density of 4120Wkgelectrode−1 were obtained.

关键词： carbon template Li-S batteries lithium metal anode lithium metal batteries nanoporous carbon sulfur doping

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Characterizations of trimetallic heteronuclear Bi1-xLa x[Fe(CN)6]·n(H2O) complexes and their thermal decomposition products

Characterizations of trimetallic heteronuclear Bi1-xLa x[Fe(...

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作者： Aono, Hiromichi Kondo, Nobuyuki Katagishi, Haruo Kurihara, Masato Sakamoto, Masatomi Sadaoka, Yoshihiko Department of Materials Science and Engineering Faculty of Engineering Ehime University Matsuyama 790-8577 Japan Graduate Program of Human Sensing and Functional Sensor Engineering Graduate School of Science and Engineering Yamagata University Yamagata 990-8560 Japan Department of Material and Biological Chemistry Faculty of Science Yamagata University Yamagata 990-8560 Japan

Heteronuclear Bi1-x La x [Fe(CN)6] &middotnH2O complexes were synthesized, and their crystal structures and thermal decomposition process were investigated by X-ray diffraction (XRD), thermogravimetry analysis (TG... 详细信息

Heteronuclear Bi1-x La x [Fe(CN)6] ·nH2O complexes were synthesized, and their crystal structures and thermal decomposition process were investigated by X-ray diffraction (XRD), thermogravimetry analysis (TGA), Auger electron spectroscopy (AES) with scanning electron microscope (SEM), and transmission electron microscopy (TEM). The crystal system of the complexes was orthorhombic having n = 4 for x = 0-0.7 and was hexagonal having n = 5 for x = 1.0. Their mixture was confirmed for x = 0.8 and 0.9. The lattice parameters for the orthorhombic increased with increasing the x value for the complexes. The single phase of trimetallic perovskite-type Bi1-x La x FeO3 was obtained by its thermal decomposition at low temperature. The crystal system was hexagonal for BiFeO3 (x = 0) and orthorhombic for x = 0.1-1.0. In the case of the decomposed perovskite sample, the lattice parameters decreased with increasing x values for Bi1-x La x FeO3. The particle size was ca. 30 nm for Bi0.2La0.8FeO3 obtained by thermal decomposition at 500 °C and it grew with an increase in decomposition temperature. For the Bi0.5La0.5FeO 3, AES showed that the elemental distributions of Bi, La, and Fe on the surface were very homogeneous for the sample decomposed at 700 °C.

关键词： Bismuth compounds

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Pueraria lobata (Kudzu) photosystem i improves the photoelectrochemical performance of silicon

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Industrial Biotechnology 2013年第1期9卷 37-41页

作者： Gunther, Darlene Leblanc, Gabriel Cliffel, David E. Kane Jennings, G. Interdisciplinary Materials Science Graduate Program Vanderbilt University Nashville TN United States Department of Chemistry Vanderbilt University Nashville TN United States Department of Chemical and Biomolecular Engineering Vanderbilt University 2301 Vanderbilt Place Nashville TN 37235 United States

Photosystem I (PSI), a protein complex found within the thylakoid membrane of green plants and some bacteria, drives nature's 90-terawatt solar energy conversion process known as photosynthesis. Kudzu (Pueraria lobata) is an invasive vine from eastern Asia that grows in the southern United States, spreading at ∼500 km2 per year and causing extensive environmental damage. This article reports the first integration of nature's optimized solar energy converter-PSI from the fast-growing, invasive leaves of kudzu-with the ubiquitous platform of integrated circuits-silicon-to prepare a "wet" photoelectrochemical cell. Herein, we report on the success of PSI films extracted from the kudzu leaf and deposited on boron-doped silicon (p-Si) to enhance photoelectrochemical current over p-Si alone. © 2013, Mary Ann Liebert, Inc.

关键词： Solar energy

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Contamination-free cell lysis microfluidic device using cell cross over

Contamination-free cell lysis microfluidic device using cell...

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13th International Conference on Miniaturized Systems for Chemistry and Life sciences, MicroTAS 2009

作者： Mun, Byung Phil Jung, Seung Mo Yoon, Sang Youl Lee, Jong Hyun Yang, Sung School of Information and Mechatronics Gwangju Institute of Science and Technology Korea Republic of Graduate Program of Medical System Engineering Gwangju Institute of Science and Technology Korea Republic of Department of Nanobio Materials and Electronics Gwangju Institute of Science and Technology Korea Republic of

ISBN: (纸本)9780979806421

Complicated and time-consuming cell purification processes prevent a micro cell lysis device from integrating with LOC (Lab-on-a-chip) or μ-TAS (μ-Total Analysis System) devices for cell analysis. In this paper, we present a microfluidic cell lysis device using a contamination-free cell cross over method in order to minimize the cell pretreatment procedure. © 2009 CBMS.

关键词： Microfluidics

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Thermomechanical Behavior and Corrosion Resistance of a 316 L Austenitic Stainless Steel

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materials sciences and Applications 2020年第4期11卷 217-233页

作者： Rafael P. Ferreira Carmem C. F. Nascimento Gedeon S. Reis Eden S. Silva Samuel F. Rodrigues Graduate Program in Materials Engineering Federal Institute of Education Science and Technology of Maranhao (IFMA) Sao Luis Brazil

Hot-formed components are constantly exposed to hostile environments with corrosive substances. Microstructural changes caused by thermomechanical processing can be predicted to increase the corrosion resistance of austenitic stainless steels. The objective of this study is to understand the relationship between the dynamic softening mechanisms and corrosion resistance, thus optimizing the hot-forming process. In the current work, the dynamic recrystallization (DRX) behavior of AISI 316 L austenitic stainless steel was studied in the temperature range of 1273 - 1423 K and strain-rate range of 0.1 - 5.0 s-1 using physical simulation. Subsequently, potentiodynamic polarization tests and scanning electron microscopy were performed on the hot-deformed samples to investigate the influence of temperature and strain-rate on the corrosion resistance and mechanical properties. The results indicated that the DRX fractions increased under low-temperature and high strain-rate conditions, resulting in grain refinement. The potentiodynamic polarization tests indicated that the dynamically recovered samples demonstrated high resistance to corrosion compared with the DRX samples. The best route found for the investigated alloy was for the strain to be applied at a temperature of 1423 K and a strain rate of 0.1 s-1.

关键词： 316 L Austenitic Stainless Steel Softening Phenomena Corrosion

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Characterization of FeCr and FeCoCr alloy coatings of carbon steels for marine environment applications

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Applied Adhesion science 2013年第1期1卷 1-10页

作者： Antunes, Fernando José de Sá Brito, Vinícius Ribeiro dos Santos Bastos, Ivan Napoleão Costa, Hector Reynaldo Meneses Centro Federal de Educação Tecnológica Celso Suckow da Fonseca Graduate Program in Mechanical Engineering and Materials Technology Av. Maracanã 229 Rio de Janeiro RJ – 20271-110 Brazil Universidade do Estado do Rio de Janeiro Graduate Program in Materials Science and Technology Rua Bonfim 25 Nova Friburgo RJ – 28625-570 Brazil

This paper presents the adhesive strength results of FeCr and FeCoCr deposits produced by electric arc thermal spray process on carbon steel plates. Five chemical compositions were tested to give a large panel of possibility. Coatings were characterized by several methods to result in a performance screening. The main assessment of microstructural morphology was made by scanning electron microscopy (SEM). The mechanical strength of coatings was evaluated by standard pull-off test. The corrosion resistance was analyzed in salt-spray test. The morphology of coatings exhibits characteristics of lamellar microstructures with incompletely melted particles together with a distribution of similarly oriented oxides. The adhesive strength of FeCoCr alloy coatings was higher amongst all studied conditions. All sealed conditions presented low corrosion in salt-spray exposure. Additionally, a new FeCoCr alloy was studied to reduce pores and microcracks that are frequently found in traditional FeCr and FeCrNi alloys. Based on the performed characterizations, the findings suggested that the FeCoCr deposition, with an epoxy sealing, is suitable to be used as an efficient coating of carbon steel in aggressive marine environments. © 2013, Antunes et al.;licensee Springer.

关键词： Adhesion test Carbon steel FeCoCr coating Salt-spray test Thermal spray

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Influence of Al-5.0Nb-0.5B inoculant on the microstructure and mechanical properties of AA 2017 alloy fabricated using laser-based powder bed fusion

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Journal of Alloys and Compounds 2025年 1032卷

作者： Pamela Karina dos Santos Bomfim Bruna Fernanda Batistão Aylanna Priscila Marques de Araújo Leandro Henrique Pereira Ricardo Henrique Buzolin Sergio T. Amancio-Filho Conrado Ramos Moreira Afonso Claudemiro Bolfarini Claudio Shyinti Kiminami Francisco Gil Coury Piter Gargarella Graduate Program in Materials Science and Engineering Federal University of São Carlos Rod.Washington Luis Km 235 São Carlos SP 13565-905 Brazil High Performance and Lightweight Materials Group kopernikusgasse 24 Graz 8010 Austria BMK Endowed Professorship for Aviation Kopernikusgasse 24 Graz 8010 Austria Institute of Materials Science Joining and Forming Graz University of Technology Kopernikugasse 24/l Graz 80210 Austria Department of Materials Engineering (DEMa) Federal University of São Carlos (UFSCar) Rod. Washington Luiz km 235 São Carlos 13565-905 Brazil Center of Characterization and Development of Materials Federal University of São Carlos Rod. Washington Luiz km 235 SP-310 São Carlos SP 13565-905 Brazil

This study investigated the influence of the inoculant Al-5.0Nb-0.5B on the microstructure and mechanical properties of the AA 2017 alloy fabricated using laser-based powder bed fusion (L-PBF). The AA 2017 alloy powder was obtained through gas atomization and then mixed with 2 wt% of Al-5.0Nb-0.5B powder (20–53 µm) and synthesized using the L-PBF technique. The small addition of the Al-5.0Nb-0.5B, coupled with specific processing parameters, led to a reduction in the fraction of cracks and transformed the solidification structure from cellular to equiaxial. Additionally, it resulted in a grain size reduction down to 4.0 ± 2.9 µm and a low fiber texture. Due to the refined grains, the AA 2017 samples with 2 wt% Al-5.0Nb-0.5B exhibited a high yield strength of 215 ± 33 MPa and ultimate compressive strength of 602 ± 47 MPa, compared to the AA 2017 alloy samples, which exhibited yield strength of 171 ± 8 MPa and ultimate compressive strength of 427 ± 46 MPa. The addition of a small fraction of Al-5.0Nb-0.5B to the AA 2017 alloy, produced by L-PBF, is a promising alternative for manufacturing lightweight parts with a lower amount of hot cracks and equiaxial microstructure. The results show that the use of inoculant with the micrometric size is an effective alternative to the use of nanoparticles, which has a higher safety risk, is usually difficult to homogenize and may promote agglomeration.

关键词： Compressive strength

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