ACS Applied Optical Materials最新文献_第5页

Study of the Electrical Behavior of CsPbBr3 Single Crystal and Films under Visible and High-Energy Photons CsPbBr3单晶和薄膜在可见光和高能光子下的电学行为研究

ACS Applied Optical Materials Pub Date : 2025-03-20 DOI: 10.1021/acsaom.4c0045510.1021/acsaom.4c00455

Tahira Khan*, Manas R. Gartia*, Jianwei Wang and Jyotsna Sharma,

{"title":"Study of the Electrical Behavior of CsPbBr3 Single Crystal and Films under Visible and High-Energy Photons","authors":"Tahira Khan*, Manas R. Gartia*, Jianwei Wang and Jyotsna Sharma, ","doi":"10.1021/acsaom.4c0045510.1021/acsaom.4c00455","DOIUrl":"https://doi.org/10.1021/acsaom.4c00455https://doi.org/10.1021/acsaom.4c00455","url":null,"abstract":"CsPbBr3 is a promising material due to its capability to detect high-energy radiation and applications in solar materials. A detailed study of the electrical behavior under γ-radiation is crucial for understanding the effects of radiation. In this work, we have studied the electrical behavior of CsPbBr3 single crystal and undoped and poly(methyl methacrylate) (PMMA)-doped films of CsPbBr3. We have introduced a new method for the growth of undoped and doped films. The X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDS) analysis show the quality of the undoped, and PMMA-doped films is comparable to that of a single crystal (SC) based on purity. The current–voltage characteristic indicates that the SC and undoped film are more sensitive to ultraviolet light, but the PMMA-doped film is more sensitive to 532 nm. Also, the current under γ-radiation is lower than the dark current for SC and undoped film while is greater for PMMA-doped film when traced from 0 to −20 V. While the current–time characteristics indicate the current under γ-radiation is less negative than the dark current collected at −20 V for SC, undoped, and PMMA-doped films. The mobility-lifetime product is highest for SC, moderate for undoped film, and lowest for PMMA-doped film. These findings clarify some of the understanding of the device physics under visible and high-energy photons for optoelectronic and high-energy radiation detection.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 3","pages":"620–629 620–629"},"PeriodicalIF":0.0,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsaom.4c00455","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of the Electrical Behavior of CsPbBr₃ Single Crystal and Films under Visible and High-Energy Photons. CsPbBr3单晶和薄膜在可见光和高能光子下的电学行为研究。

ACS Applied Optical Materials Pub Date : 2025-03-20 eCollection Date: 2025-03-28 DOI: 10.1021/acsaom.4c00455

Tahira Khan, Manas R Gartia, Jianwei Wang, Jyotsna Sharma

{"title":"Study of the Electrical Behavior of CsPbBr3 Single Crystal and Films under Visible and High-Energy Photons.","authors":"Tahira Khan, Manas R Gartia, Jianwei Wang, Jyotsna Sharma","doi":"10.1021/acsaom.4c00455","DOIUrl":"10.1021/acsaom.4c00455","url":null,"abstract":"CsPbBr3 is a promising material due to its capability to detect high-energy radiation and applications in solar materials. A detailed study of the electrical behavior under γ-radiation is crucial for understanding the effects of radiation. In this work, we have studied the electrical behavior of CsPbBr3 single crystal and undoped and poly(methyl methacrylate) (PMMA)-doped films of CsPbBr3. We have introduced a new method for the growth of undoped and doped films. The X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDS) analysis show the quality of the undoped, and PMMA-doped films is comparable to that of a single crystal (SC) based on purity. The current-voltage characteristic indicates that the SC and undoped film are more sensitive to ultraviolet light, but the PMMA-doped film is more sensitive to 532 nm. Also, the current under γ-radiation is lower than the dark current for SC and undoped film while is greater for PMMA-doped film when traced from 0 to -20 V. While the current-time characteristics indicate the current under γ-radiation is less negative than the dark current collected at -20 V for SC, undoped, and PMMA-doped films. The mobility-lifetime product is highest for SC, moderate for undoped film, and lowest for PMMA-doped film. These findings clarify some of the understanding of the device physics under visible and high-energy photons for optoelectronic and high-energy radiation detection.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 3","pages":"620-629"},"PeriodicalIF":0.0,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11959612/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143774425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modular Nanoparticle Platform for Solution-Phase Optical Sensing of Protein-Protein Interactions. 用于蛋白质-蛋白质相互作用溶液相光学传感的模块化纳米粒子平台。

ACS Applied Optical Materials Pub Date : 2025-03-15 eCollection Date: 2025-03-28 DOI: 10.1021/acsaom.4c00486

Jieying Zhou, Korneel Ridderbeek, Peijian Zou, Aaron B Naden, Stefan Gaussmann, Fangyuan Song, Pascal Falter-Braun, Euan R Kay, Michael Sattler, Jian Cui

{"title":"Modular Nanoparticle Platform for Solution-Phase Optical Sensing of Protein-Protein Interactions.","authors":"Jieying Zhou, Korneel Ridderbeek, Peijian Zou, Aaron B Naden, Stefan Gaussmann, Fangyuan Song, Pascal Falter-Braun, Euan R Kay, Michael Sattler, Jian Cui","doi":"10.1021/acsaom.4c00486","DOIUrl":"10.1021/acsaom.4c00486","url":null,"abstract":"Protein-protein interactions regulate essentially all cellular processes. Understanding these interactions, including the quantification of binding parameters, is crucial for unraveling the molecular mechanisms underlying cellular pathways and, ultimately, their roles in cellular physiology and pathology. Current methods for measuring protein-protein interactions in vitro generally require amino acid conjugation of fluorescent tags, complex instrumentation, large amounts of purified protein, or measurement at extended surfaces. Here, we present an elegant nanoparticle-based platform for the optical detection of protein-protein interactions in the solution phase. We synthesized gold-coated silver decahedral nanoparticles possessing high chemical stability and exceptional optical sensing properties. The nanoparticle surface is then tailored for specific binding to commonly used polyhistidine tags of recombinant proteins. Sequential addition of proteins to the nanoparticle suspension results in spectral shifts of the localized surface plasmon resonance that can be monitored by conventional UV-vis spectrophotometry. With this approach, we demonstrate both the qualitative detection of specific protein-protein interactions and the quantification of equilibrium and kinetic binding parameters between small globular proteins. Requiring minimal protein quantities and basic laboratory equipment, this technique offers a simple, economical, and modular approach to characterizing protein-protein interactions, holds promise for broad use in future studies, and may serve as a template for future biosensing technologies.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 3","pages":"676-688"},"PeriodicalIF":0.0,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11959585/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143774391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modular Nanoparticle Platform for Solution-Phase Optical Sensing of Protein–Protein Interactions 蛋白质-蛋白质相互作用的液相光学传感模块纳米粒子平台

ACS Applied Optical Materials Pub Date : 2025-03-15 DOI: 10.1021/acsaom.4c0048610.1021/acsaom.4c00486

Jieying Zhou, Korneel Ridderbeek, Peijian Zou, Aaron B. Naden, Stefan Gaussmann, Fangyuan Song, Pascal Falter-Braun, Euan R. Kay, Michael Sattler and Jian Cui*,

{"title":"Modular Nanoparticle Platform for Solution-Phase Optical Sensing of Protein–Protein Interactions","authors":"Jieying Zhou, Korneel Ridderbeek, Peijian Zou, Aaron B. Naden, Stefan Gaussmann, Fangyuan Song, Pascal Falter-Braun, Euan R. Kay, Michael Sattler and Jian Cui*, ","doi":"10.1021/acsaom.4c0048610.1021/acsaom.4c00486","DOIUrl":"https://doi.org/10.1021/acsaom.4c00486https://doi.org/10.1021/acsaom.4c00486","url":null,"abstract":"Protein–protein interactions regulate essentially all cellular processes. Understanding these interactions, including the quantification of binding parameters, is crucial for unraveling the molecular mechanisms underlying cellular pathways and, ultimately, their roles in cellular physiology and pathology. Current methods for measuring protein–protein interactions in vitro generally require amino acid conjugation of fluorescent tags, complex instrumentation, large amounts of purified protein, or measurement at extended surfaces. Here, we present an elegant nanoparticle-based platform for the optical detection of protein–protein interactions in the solution phase. We synthesized gold-coated silver decahedral nanoparticles possessing high chemical stability and exceptional optical sensing properties. The nanoparticle surface is then tailored for specific binding to commonly used polyhistidine tags of recombinant proteins. Sequential addition of proteins to the nanoparticle suspension results in spectral shifts of the localized surface plasmon resonance that can be monitored by conventional UV–vis spectrophotometry. With this approach, we demonstrate both the qualitative detection of specific protein–protein interactions and the quantification of equilibrium and kinetic binding parameters between small globular proteins. Requiring minimal protein quantities and basic laboratory equipment, this technique offers a simple, economical, and modular approach to characterizing protein–protein interactions, holds promise for broad use in future studies, and may serve as a template for future biosensing technologies.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 3","pages":"676–688 676–688"},"PeriodicalIF":0.0,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsaom.4c00486","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Sensitivity Tunable Terahertz Metasurface Based on Vanadium Dioxide for Biological Protein Detection 基于二氧化钒的高灵敏度可调谐太赫兹超表面用于生物蛋白检测

ACS Applied Optical Materials Pub Date : 2025-03-14 DOI: 10.1021/acsaom.5c0004710.1021/acsaom.5c00047

Yiheng Luo, Min Gao*, Chang Lu, Jiajia Zhang, Junxiao Liu, Yunxin Tan, Tianlong Wen and Yuan Lin*,

{"title":"High-Sensitivity Tunable Terahertz Metasurface Based on Vanadium Dioxide for Biological Protein Detection","authors":"Yiheng Luo, Min Gao*, Chang Lu, Jiajia Zhang, Junxiao Liu, Yunxin Tan, Tianlong Wen and Yuan Lin*, ","doi":"10.1021/acsaom.5c0004710.1021/acsaom.5c00047","DOIUrl":"https://doi.org/10.1021/acsaom.5c00047https://doi.org/10.1021/acsaom.5c00047","url":null,"abstract":"Terahertz (THz) metasurface sensors hold significant potential for detecting ultralow concentration of various target biomarkers, offering a powerful platform for bioanalysis and disease marker diagnostics. Most existing THz metasurface sensors are passive, providing high measurement precision, though their accuracy can be further improved. This study proposes a tunable THz metasurface sensor based on electromagnetically induced transparency (EIT) with vanadium dioxide (VO2) as a functional material. The designed metasurface arrays feature adjustable resonant modes at frequencies of 0.5 THz and 0.75 THz, achieving sensitivities of 0.08 THz/RIU and 0.11 THz/RIU, respectively. This sensor demonstrates excellent performance in detecting ultralow concentrations of biomarker proteins and enables different detection modes by controlling the phase transition of VO2, ensuring stability through cross-validation of experimental results. Experimental testing shows the sensor’s sensitivity to hemoglobin and glycated hemoglobin, with a detection limit as low as 10 pM. The dual detection modes confirm the accuracy of experimental results, supporting diverse applications for low-concentration THz biosensing and enhancing the practical utility of THz sensors.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 3","pages":"789–797 789–797"},"PeriodicalIF":0.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical-Pump and Terahertz-Probe Spectroscopic Evidence of Polaron Quasiparticles in La0.3Sr0.7TiO3 Thin Films: A Push toward High-Frequency Oxide Optoelectronics La0.3Sr0.7TiO3薄膜中极化子准粒子的光泵和太赫兹探针光谱证据：向高频氧化光电子学的推进

ACS Applied Optical Materials Pub Date : 2025-03-14 DOI: 10.1021/acsaom.4c0047010.1021/acsaom.4c00470

Anagha Premaraj, Ashish Kumar Mishra, Sanjeev Kumar, Ganesh Sahastrabuddhe and Dhanvir Singh Rana*,

{"title":"Optical-Pump and Terahertz-Probe Spectroscopic Evidence of Polaron Quasiparticles in La0.3Sr0.7TiO3 Thin Films: A Push toward High-Frequency Oxide Optoelectronics","authors":"Anagha Premaraj, Ashish Kumar Mishra, Sanjeev Kumar, Ganesh Sahastrabuddhe and Dhanvir Singh Rana*, ","doi":"10.1021/acsaom.4c0047010.1021/acsaom.4c00470","DOIUrl":"https://doi.org/10.1021/acsaom.4c00470https://doi.org/10.1021/acsaom.4c00470","url":null,"abstract":"Strongly correlated materials, due to competing energies, give rise to exciting ground states, such as metal-to-insulator transitions (MIT). Understanding MIT in strongly correlated materials is of immense interest, owing to their potential applications in future electronics. Generally, the physics near MIT is driven by electron quasiparticles resulting from electron–electron interactions. However, we show the profound effects of polaron quasiparticles resulting from the 3d electron clouds coupled to phonons on the properties near MIT. The nature of these quasiparticles, resulting from strong electron–phonon coupling in our La0.3Sr0.7TiO3 (LSTO3) thin films, is investigated through a low-energy carrier dynamics study using time-domain terahertz (THz) spectroscopy, which shows that the electrons move in the heavy 3d band influenced by the optical phonons. The low-temperature results agree with polaron hopping. The nonequilibrium behavior and the role of photoinduced polarons are further explored using our ultrafast carrier dynamics studies utilizing optical pump terahertz probe spectroscopy. Our findings demonstrate the dimensionally dependent electron–phonon interaction in the system, and the conduction mechanism occurs through polaron hopping. The increased effective mass of dressed electrons in our system is directly related to the large thermoelectric properties seen in the 3d transition systems because of the strong electron–phonon coupling. In this case, we offer a tuning parameter for the polaron energy with a direct practical consequence.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 3","pages":"639–645 639–645"},"PeriodicalIF":0.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reversible Thermo/hydrochromic Luminescence in a Ln-MOF Film for Anticounterfeiting Application 用于防伪的mn - mof薄膜的可逆热/水致变色发光

ACS Applied Optical Materials Pub Date : 2025-03-14 DOI: 10.1021/acsaom.5c0002910.1021/acsaom.5c00029

Xiaohe Wei, Fengjun Chun, Yaxin Cao, Xin Zhang, Jiangkun Chen, Zhifeng Xing, Yongzheng Fang* and Feng Wang*,

{"title":"Reversible Thermo/hydrochromic Luminescence in a Ln-MOF Film for Anticounterfeiting Application","authors":"Xiaohe Wei, Fengjun Chun, Yaxin Cao, Xin Zhang, Jiangkun Chen, Zhifeng Xing, Yongzheng Fang* and Feng Wang*, ","doi":"10.1021/acsaom.5c0002910.1021/acsaom.5c00029","DOIUrl":"https://doi.org/10.1021/acsaom.5c00029https://doi.org/10.1021/acsaom.5c00029","url":null,"abstract":"Stimuli-responsive luminescent materials have attracted much attention in anticounterfeiting applications due to their excellent optical encryption capabilities. Here, a dual-stimuli-responsive lanthanide metal–organic framework (Tb/Eu-MOF) film is presented to enrich luminescence response behaviors for advancing the security levels. The loss/gain of H2O ligands under the stimulation of heat/moisture drives the reversible phase transformation of Ln-MOF films between two phases with distinct ionic distances. The shortening of the ionic distance upon heating facilitates Tb3+-to-Eu3+ energy transfer, leading to an emission color change from green to red. The opposite influence brought by moisture reverses the emission color back to green. We show that the color response of the Ln-MOF films can be deliberately controlled by rational design of the MOF structure and stimulation parameter for high-security anticounterfeiting applications.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 3","pages":"772–778 772–778"},"PeriodicalIF":0.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsaom.5c00029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Magnetic Dipole Emission from 2D Hybrid Organic–Inorganic Perovskites via Mie Resonator Dimers 利用Mie共振二聚体增强二维杂化有机-无机钙钛矿的磁偶极子发射

ACS Applied Optical Materials Pub Date : 2025-03-14 DOI: 10.1021/acsaom.4c0052910.1021/acsaom.4c00529

Roark Chao, Larry K. Heki, Wesley K. Mills and Jon A. Schuller*,

{"title":"Enhancing Magnetic Dipole Emission from 2D Hybrid Organic–Inorganic Perovskites via Mie Resonator Dimers","authors":"Roark Chao, Larry K. Heki, Wesley K. Mills and Jon A. Schuller*, ","doi":"10.1021/acsaom.4c0052910.1021/acsaom.4c00529","DOIUrl":"https://doi.org/10.1021/acsaom.4c00529https://doi.org/10.1021/acsaom.4c00529","url":null,"abstract":"Recently, layered 2D hybrid organic–inorganic perovskites (HOIPs) like butylammonium lead iodide (BA2PbI4) have been shown to exhibit ultrabright out-of-plane-oriented magnetic dipole (MDOP) photoluminescence (PL) arising from self-trapped excitons (STEs). The MDOP emission, however, has considerable spectral overlap with the dominant in-plane-oriented electric dipole (EDIP) transitions, making it difficult to interrogate STE properties. Here, we theoretically investigate opportunities to use Mie resonator dimers to selectively enhance the MDOP emission through the Purcell effect. We calculate relative MD and ED Purcell enhancements at dimer center as well as average values across the dimer geometry. We show that the selective enhancement is excellent at the dimer center enabling nearly pure MDOP emission (96%) at the MD emission peak (540 nm) as well as predominant MDOP emission (up to 77%) across the entire integrated spectrum (500–600 nm). We subsequently show, however, that away from the dimer center, Purcell enhancement of the relatively weak out-of-plane EDOP transitions competes with MDOP enhancements, reducing the branching ratio (73% at the MD emission peak, 39% spectrally integrated). Lastly, we calculate how the Mie resonator dimer modifies the PL spectra and emitter radiation pattern. Notably, for volume-averaged dipoles, both MD and ED emissions are mediated via the dimer, producing a single donut-beam-like radiation pattern across the entire emission spectrum. Our results clarify the potential for achieving “pure” MD emission from 2D HOIPs via simple Mie resonator Purcell enhancements and highlight the importance of designing nanophotonic structures that can maintain desired selective enhancements away from high-symmetry points.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 3","pages":"737–742 737–742"},"PeriodicalIF":0.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsaom.4c00529","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Magnetic Dipole Emission from 2D Hybrid Organic-Inorganic Perovskites via Mie Resonator Dimers. 通过米氏谐振器二聚体增强二维有机-无机混合包光体的磁偶极发射。

ACS Applied Optical Materials Pub Date : 2025-03-14 eCollection Date: 2025-03-28 DOI: 10.1021/acsaom.4c00529

Roark Chao, Larry K Heki, Wesley K Mills, Jon A Schuller

{"title":"Enhancing Magnetic Dipole Emission from 2D Hybrid Organic-Inorganic Perovskites via Mie Resonator Dimers.","authors":"Roark Chao, Larry K Heki, Wesley K Mills, Jon A Schuller","doi":"10.1021/acsaom.4c00529","DOIUrl":"10.1021/acsaom.4c00529","url":null,"abstract":"Recently, layered 2D hybrid organic-inorganic perovskites (HOIPs) like butylammonium lead iodide (BA2PbI4) have been shown to exhibit ultrabright out-of-plane-oriented magnetic dipole (MDOP) photoluminescence (PL) arising from self-trapped excitons (STEs). The MDOP emission, however, has considerable spectral overlap with the dominant in-plane-oriented electric dipole (EDIP) transitions, making it difficult to interrogate STE properties. Here, we theoretically investigate opportunities to use Mie resonator dimers to selectively enhance the MDOP emission through the Purcell effect. We calculate relative MD and ED Purcell enhancements at dimer center as well as average values across the dimer geometry. We show that the selective enhancement is excellent at the dimer center enabling nearly pure MDOP emission (96%) at the MD emission peak (540 nm) as well as predominant MDOP emission (up to 77%) across the entire integrated spectrum (500-600 nm). We subsequently show, however, that away from the dimer center, Purcell enhancement of the relatively weak out-of-plane EDOP transitions competes with MDOP enhancements, reducing the branching ratio (73% at the MD emission peak, 39% spectrally integrated). Lastly, we calculate how the Mie resonator dimer modifies the PL spectra and emitter radiation pattern. Notably, for volume-averaged dipoles, both MD and ED emissions are mediated via the dimer, producing a single donut-beam-like radiation pattern across the entire emission spectrum. Our results clarify the potential for achieving \"pure\" MD emission from 2D HOIPs via simple Mie resonator Purcell enhancements and highlight the importance of designing nanophotonic structures that can maintain desired selective enhancements away from high-symmetry points.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 3","pages":"737-742"},"PeriodicalIF":0.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11959594/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143774387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Boosting Biomass Production of Microalgae at Low Environmental Temperatures Using Sunlight-Driven Photothermal Photobioreactors 利用阳光驱动的光热光生物反应器促进微藻在低温环境下的生物量生产

ACS Applied Optical Materials Pub Date : 2025-03-11 DOI: 10.1021/acsaom.4c0048710.1021/acsaom.4c00487

Yue Wang, Chang Chen, Zihui Ni, Kui Lai, Hao Shen* and Lihua Shen*,

{"title":"Boosting Biomass Production of Microalgae at Low Environmental Temperatures Using Sunlight-Driven Photothermal Photobioreactors","authors":"Yue Wang, Chang Chen, Zihui Ni, Kui Lai, Hao Shen* and Lihua Shen*, ","doi":"10.1021/acsaom.4c0048710.1021/acsaom.4c00487","DOIUrl":"https://doi.org/10.1021/acsaom.4c00487https://doi.org/10.1021/acsaom.4c00487","url":null,"abstract":"Temperature is a critical factor in optimizing microalgae growth and maximizing biomass productivity in closed photobioreactors during outdoor cultivation. However, maintaining effective temperature control remains a significant challenge, especially in cold climates or regions with low ambient temperatures and limited sunlight as current methods are often inefficient or energy-intensive. Here, we present a simple yet highly efficient method for passive temperature control of closed microalgal photobioreactors in low-temperature outdoor environments by integrating an existing photobioreactor with a newly developed solar-driven photothermal conversion film. The flexible nanocomposite film, composed of poly(methyl methacrylate) and photothermal converters (Cs0.33WO3), shows high light transmittance (>75%) in the visible light wavelength range and, more importantly, excellent near-infrared absorption capability (>90%). Under simulated solar radiation (∼650 W/m2), the nanocomposite film experiences a temperature elevation of 15 °C above ambient. In practical outdoor tests, the sunlight-driven photothermal photobioreactor exhibited an average temperature increase of 5 °C during daylight, compared to the photobioreactor without nanocomposite films. During a 10 day outdoor cultivation period, the sunlight-driven photothermal photobioreactor achieves an average microalgae (Chlorella pyrenoidosa) biomass productivity of approximately 0.069 g/L/day, which is 43.8% higher than 0.048 g/L/day observed in the photobioreactor without nanocomposite films. This work thus offers a promising approach for sustainable microalgae production in cold climates or regions with low environmental temperatures requiring no additional energy consumption.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 3","pages":"689–697 689–697"},"PeriodicalIF":0.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0