Advanced Science最新文献_第2页

Ultrafast All-Optical Switching and Active Sub-Cycle Waveform Control via Time-Variant Photodoping of Terahertz Metasurfaces.

IF 14.3 1区材料科学

Advanced Science Pub Date : 2025-02-20 DOI: 10.1002/advs.202413719

Jeongmin Jang, Junsuk Rho, Hee Jun Shin

{"title":"Ultrafast All-Optical Switching and Active Sub-Cycle Waveform Control via Time-Variant Photodoping of Terahertz Metasurfaces.","authors":"Jeongmin Jang, Junsuk Rho, Hee Jun Shin","doi":"10.1002/advs.202413719","DOIUrl":"https://doi.org/10.1002/advs.202413719","url":null,"abstract":"The development of high-speed and high-performance optical switches has been a long-standing issue in the field of photonics. This paper introduces a pioneering time-resolved spectroscopy-based approach for realizing photon-induced ultrafast terahertz (THz) modulation within an electrical split-ring resonator (SRR) via photoexcitation, rather than relaxation dynamics, in a silicon-based indirect-bandgap material. Two competitive effects (shorting of LC circuit and metallization of substrate) occur during photon-induced THz modulation. The tradeoff between these two effects enables high-speed optical switching via different time scales of the photoexcitation processes-THz-optical cooperative effect and phonon-assisted electron transition. THz-optical cooperative photoexcitation, causing a shorting effect within the LC circuit, has been observed in the SRR gap, whose size typically exceeds that facilitating impact ionization (IMI). Notably, a remarkably short THz switching time of 1.3 ps has been achieved via only photoexcitation and with a high-performance transmission intensity modulation depth of over 500%. In addition, active temporal waveform control down to a sub-cycle pulse has been successfully demonstrated. The proposed approach suggests a new route for constructing high-speed and efficient THz dynamic photonic devices with potential applications in temporal waveform control.","PeriodicalId":117,"journal":{"name":"Advanced Science","volume":" ","pages":"e2413719"},"PeriodicalIF":14.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of Aromatic Interaction Networks in a Protein Cage Modulated by Fluorescent Ligand Binding.

IF 14.3 1区材料科学

Advanced Science Pub Date : 2025-02-20 DOI: 10.1002/advs.202417030

Yuki Hishikawa, Taiga Suzuki, Basudev Maity, Hiroki Noya, Michito Yoshizawa, Asuka Asanuma, Yuri Katagiri, Satoshi Abe, Satoru Nagatoishi, Kouhei Tsumoto, Takafumi Ueno

{"title":"Design of Aromatic Interaction Networks in a Protein Cage Modulated by Fluorescent Ligand Binding.","authors":"Yuki Hishikawa, Taiga Suzuki, Basudev Maity, Hiroki Noya, Michito Yoshizawa, Asuka Asanuma, Yuri Katagiri, Satoshi Abe, Satoru Nagatoishi, Kouhei Tsumoto, Takafumi Ueno","doi":"10.1002/advs.202417030","DOIUrl":"https://doi.org/10.1002/advs.202417030","url":null,"abstract":"Dynamic behavior of proteins, such as orientation changes of aromatic residues, plays an important role in controlling biomolecular functions. Protein design that can precisely control such dynamic behavior at the atomic level is a challenging issue. The study reports the development of a system capable of orientational changes of aromatic side chains upon ligand binding. Aromatic pockets are constructed on the inner surfaces of protein cages to bind polycyclic aromatic fluorescent molecules to the targeted position by π-π stacking interactions. X-ray crystal structural analysis indicated the cooperative orientation changes of the aromatic clusters around the pocket triggered by the ligand binding. A comparison of various ligands shows that the movement of aromatic clusters can be controlled depending on the ligand structures. Fluorescence quantum yield and fluorescence lifetime are enhanced due to isolation of the fluorescent molecules in an aromatic pocket. These findings provide an understanding of the unique molecular behavior and fluorescence properties of ligands due to the assembly of aromatic residues and a guideline for developing dynamically controlled supramolecular biomaterials.","PeriodicalId":117,"journal":{"name":"Advanced Science","volume":" ","pages":"e2417030"},"PeriodicalIF":14.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Applying Ultrasound to Mechanically and Noninvasively Sensitize Prostate Tumors to TRAIL-Mediated Apoptosis.

IF 14.3 1区材料科学

Advanced Science Pub Date : 2025-02-20 DOI: 10.1002/advs.202412995

Abigail R Fabiano, Malachy W Newman, Jenna A Dombroski, Schyler J Rowland, Samantha V Knoblauch, Jiro Kusunose, Katherine N Gibson-Corley, Benjamin G Kaufman, Liqin Ren, Charles F Caskey, Michael R King

{"title":"Applying Ultrasound to Mechanically and Noninvasively Sensitize Prostate Tumors to TRAIL-Mediated Apoptosis.","authors":"Abigail R Fabiano, Malachy W Newman, Jenna A Dombroski, Schyler J Rowland, Samantha V Knoblauch, Jiro Kusunose, Katherine N Gibson-Corley, Benjamin G Kaufman, Liqin Ren, Charles F Caskey, Michael R King","doi":"10.1002/advs.202412995","DOIUrl":"https://doi.org/10.1002/advs.202412995","url":null,"abstract":"Non-surgical and safe prostate cancer (PCa) therapies are in demand. Soluble tumor necrosis factor (TNF-α) related apoptosis inducing ligand (TRAIL), a cancer-specific drug, shows preclinical efficacy but has a short circulation half-life. This research has shown that physiological fluid shear stress activates mechanosensitive ion channels (MSCs), such as Piezo1, enhancing TRAIL-mediated apoptosis in cancer cells. Herein, noninvasive, focal ultrasound (FUS) is implemented to augment the pro-apoptotic effects of TRAIL. Using thermally safe FUS parameters, it is observed that TRAIL sensitivity increases with higher FUS pressure in PCa cells, mediated by Piezo1. This is confirmed by examining the effects of calcium chelation, MSC inhibitors, and PIEZO knockdown. In vivo, a multi-dose study with 10 min FUS exposure shows that 0 and 4-h intervals between TRAIL and FUS significantly reduce tumor burden, with an increase in apoptosis evident by enhanced cleaved-caspase 3 expression. This mechanotherapy offers a clinically translatable approach by utilizing widely available FUS technology, applicable to treat additional cancer types.","PeriodicalId":117,"journal":{"name":"Advanced Science","volume":" ","pages":"e2412995"},"PeriodicalIF":14.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrabroadband Directional Tunable Thermal Emission Control Based on Vanadium Dioxide Photonic Structures.

IF 14.3 1区材料科学

Advanced Science Pub Date : 2025-02-20 DOI: 10.1002/advs.202416437

Qixiang Chen, Chengcong Li, Xuemei Huang, Yuehui Lu, Hua Xu, Yang An, Longnan Li, Wei Li, Xiaobo Yin, Xun Cao, Dongliang Zhao

{"title":"Ultrabroadband Directional Tunable Thermal Emission Control Based on Vanadium Dioxide Photonic Structures.","authors":"Qixiang Chen, Chengcong Li, Xuemei Huang, Yuehui Lu, Hua Xu, Yang An, Longnan Li, Wei Li, Xiaobo Yin, Xun Cao, Dongliang Zhao","doi":"10.1002/advs.202416437","DOIUrl":"https://doi.org/10.1002/advs.202416437","url":null,"abstract":"The manipulation of thermal radiation amplitude or direction over a broadband spectrum is a fundamental capability, demonstrating significant potential in thermal management and infrared information encryption. However, existing approaches cannot control both aspects simultaneously. In this study, an ultrabroadband directional tunable thermal emitter (UDTTE) utilizing the metal-insulator transition properties of vanadium dioxide photonic structure and the Brewster effect is proposed. Before the phase transition, the UDTTE exhibits an average emissivity as low as 0.07 across the 3-20 µm band and the entire range of angles. After the phase transition, the UDTTE maintains a low emissivity of 0.33 for incident angles below 73° but displays a high emissivity of 0.78 in the 73°-83° range. This designed experiments in information encryption demonstrate that the UDTTE can synergistically utilize temperature, viewing angle, and polarization to achieve multi-level encryption of IR information. This strategy further enhances the capability to manipulate thermal radiation and holds promise for advancing technologies in information security, IR camouflage, and thermal management.","PeriodicalId":117,"journal":{"name":"Advanced Science","volume":" ","pages":"e2416437"},"PeriodicalIF":14.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using Large Language Model to Optimize Protein Purification: Insights from Protein Structure Literature Associated with Protein Data Bank.

IF 14.3 1区材料科学

Advanced Science Pub Date : 2025-02-20 DOI: 10.1002/advs.202413689

Zhuojian Chen, J Sivaraman

{"title":"Using Large Language Model to Optimize Protein Purification: Insights from Protein Structure Literature Associated with Protein Data Bank.","authors":"Zhuojian Chen, J Sivaraman","doi":"10.1002/advs.202413689","DOIUrl":"https://doi.org/10.1002/advs.202413689","url":null,"abstract":"Obtaining pure and homogeneous protein samples is vital for protein biology studies, yet optimizing protein expression and purification methods can be time-consuming because of variations in factors like expression conditions, buffer components, and fusion tags. With over 81 000 Protein Data Bank (PDB)-associated articles as of October 2024, manual extraction of relevant methods is impractical. To streamline this process, an automated tool is developed by incorporating a large language model (LLM) to extract and classify key data from these articles. The information extraction accuracy is enhanced by a 2-step-LLM and a 3-step-prompt. The key findings include: 1) Tris buffer is used in 49.2% of cases, followed by 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) and phosphate buffers. 2) Polyhistidine tags dominate at 82.5%, followed by glutathione S-transferase (GST) and maltose-binding protein (MBP) tags. 3) E. coli expression is done at 16-20 °C, with induction period favoring 12-16 h (69.0%) over 3-6 h (14.3%). The statistical analyses highlight the correlation between protein properties and purification strategies. This tool is validated through two case studies: method bias for membrane protein purification, and crosslinker/detergent preferences for Cryo-Electron Microscopy sample preparation. These findings provide a valuable resource for designing protein expression and purification experiments.","PeriodicalId":117,"journal":{"name":"Advanced Science","volume":" ","pages":"e2413689"},"PeriodicalIF":14.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adenosine Monophosphate Improves Lipolysis in Obese Mice by Reducing DNA Methylation via ADORA2A Activation by Ecto-5'-Nucleotidase (CD73).

IF 14.3 1区材料科学

Advanced Science Pub Date : 2025-02-20 DOI: 10.1002/advs.202405079

Zhijuan Cui, Li Feng, Sujuan Rao, Zihao Huang, Shuangbo Huang, Liudan Liu, Yuan Liao, Zheng Lan, Qiling Chen, Jinping Deng, Leli Wang, Yulong Yin, Chengquan Tan

{"title":"Adenosine Monophosphate Improves Lipolysis in Obese Mice by Reducing DNA Methylation via ADORA2A Activation by Ecto-5'-Nucleotidase (CD73).","authors":"Zhijuan Cui, Li Feng, Sujuan Rao, Zihao Huang, Shuangbo Huang, Liudan Liu, Yuan Liao, Zheng Lan, Qiling Chen, Jinping Deng, Leli Wang, Yulong Yin, Chengquan Tan","doi":"10.1002/advs.202405079","DOIUrl":"https://doi.org/10.1002/advs.202405079","url":null,"abstract":"The previous work discovers the potential of adenosine monophosphate (AMP) to alleviate obesity-related metabolic diseases, but the underlying molecular mechanisms remain incompletely understood. Here, AMP is confirmed to enhance white fat decomposition and improve abnormal glucose and lipid metabolism in mice fed with a high-fat (HF) diet. Mechanically, AMP is converted to adenosine (ADO) through ecto-5'-nucleotidase (CD73), and adenosine A2A receptor (ADORA2A) signaling activation is involved in the down-regulation of methylation in white adipose tissue, thereby reducing the hormone-sensitive lipase (HSL) methylation level and promoting HSL transcription and white fat decomposition. Moreover, the metabolic benefits of AMP are found to be partially eliminated in ADORA2A knockout mice, but re-expression of ADORA2A can reproduce the AMP-induced metabolic regulation in white fat. These findings reveal the mechanism that AMP, as the upstream of ADO, stimulates ADORA2A signaling and white fat DNA methylation to participate in the anti-obesity effect.","PeriodicalId":117,"journal":{"name":"Advanced Science","volume":" ","pages":"e2405079"},"PeriodicalIF":14.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PTAA-Based Perovskite Photovoltaics Catching up: Ionic Liquid Engineering-Assisted Crystallization Through Sequential Deposition.

IF 14.3 1区材料科学

Advanced Science Pub Date : 2025-02-20 DOI: 10.1002/advs.202414515

Yongjun Li, Fei Wang, Qiannan Li, Baolei Tang, Yonggui Sun, Taomiao Wang, Xiao Liang, Jing Ma, Xianfang Zhou, Fan Zhang, Xing'ao Li, Yao Tong, Ruiyuan Hu, Mingjian Yuan, Tom Wu, Annie Ng, Hanlin Hu

{"title":"PTAA-Based Perovskite Photovoltaics Catching up: Ionic Liquid Engineering-Assisted Crystallization Through Sequential Deposition.","authors":"Yongjun Li, Fei Wang, Qiannan Li, Baolei Tang, Yonggui Sun, Taomiao Wang, Xiao Liang, Jing Ma, Xianfang Zhou, Fan Zhang, Xing'ao Li, Yao Tong, Ruiyuan Hu, Mingjian Yuan, Tom Wu, Annie Ng, Hanlin Hu","doi":"10.1002/advs.202414515","DOIUrl":"https://doi.org/10.1002/advs.202414515","url":null,"abstract":"PTAA as a widely studied polymeric hole transporting material, has garnered significant attention due to its outstanding thermal and chemical stability. However, the performance of PTAA-based p-i-n devices is shown to lag behind counterpart utilizing oxides or SAMs. In this study, the ionic liquid, 1-ethyl-3-methylimidazolium formate (EMIMCOOH), is innovatively introduced into the lead iodide (PbI2) precursor solution, resulting in a more pronounced mesoporous PbI2 film with expended pore-size and denser pores. This enhancement is attributed to the coordination bond between the ─C═O group in EMIMCOOH and Pb2+. This intensified mesoporous morphology not only facilities the reaction between PbI2 and the organic layer, but also promotes the PbI2 conversion into perovskite material. Importantly, the incorporation of EMIMCOOH slows down the perovskite conversion process, increasing perovskite domain size and suppressed Pb0 trap density, resulting in a uniform perovskite layer with enhanced charge transport properties, as evidenced by the conducting atomic force microscope (c-AFM) results. As a result, the incorporation of EMIMCOOH yields a power conversion efficiency (PCE) of 24.10% and a high fill factor exceeding 85%. Notably, the PCE of the EMIMCOOH-modified device can still maintain 86% of the initial value after 1500 h at 25 °C in an N2 atmosphere.","PeriodicalId":117,"journal":{"name":"Advanced Science","volume":" ","pages":"e2414515"},"PeriodicalIF":14.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lactylation-Driven HECTD2 Limits the Response of Hepatocellular Carcinoma to Lenvatinib.

IF 14.3 1区材料科学

Advanced Science Pub Date : 2025-02-20 DOI: 10.1002/advs.202412559

Runyu Dong, Yao Fei, Yiren He, Peng Gao, Bo Zhang, Menglin Zhu, Zhixiong Wang, Longfei Wu, Shuai Wu, Xiaoming Wang, Juan Cai, Zhiqiang Chen, Xueliang Zuo

{"title":"Lactylation-Driven HECTD2 Limits the Response of Hepatocellular Carcinoma to Lenvatinib.","authors":"Runyu Dong, Yao Fei, Yiren He, Peng Gao, Bo Zhang, Menglin Zhu, Zhixiong Wang, Longfei Wu, Shuai Wu, Xiaoming Wang, Juan Cai, Zhiqiang Chen, Xueliang Zuo","doi":"10.1002/advs.202412559","DOIUrl":"https://doi.org/10.1002/advs.202412559","url":null,"abstract":"Drug resistance remains a major hurdle for the therapeutic efficacy of lenvatinib in hepatocellular carcinoma (HCC). However, the underlying mechanisms remain largely undetermined. Unbiased proteomic screening is performed to identify the potential regulators of lenvatinib resistance in HCC. Patient-derived organoids, patient-derived xenograft mouse models, and DEN/CCl4 induced HCC models are constructed to evaluate the effects of HECTD2 both in vitro and in vivo. HECTD2 is found to be highly expressed in lenvatinib-resistant HCC cell lines, patient tissues, and patient-derived organoids and xenografts. In vitro and in vivo experiments demonstrated that overexpression of HECTD2 limits the response of HCC to lenvatinib treatment. Mechanistically, HECTD2 functions as an E3 ubiquitin ligase of KEAP1, which contributes to the degradation of KEAP1 protein. Subsequently, the KEAP1/NRF2 signaling pathway initiates the antioxidative response of HCC cells. Lactylation of histone 3 on lysine residue 18 facilitates the transcription of HECTD2. Notably, a PLGA-PEG nanoparticle-based drug delivery system is synthesized, effectively targeting HECTD2 in vivo. The NPs achieved tumor-targeting, controlled-release, and biocompatibility, making them a promising therapeutic strategy for mitigating lenvatinib resistance. This study identifies HECTD2 as a nanotherapeutic target for overcoming lenvatinib resistance, providing a theoretical basis and translational application for HCC treatment.","PeriodicalId":117,"journal":{"name":"Advanced Science","volume":" ","pages":"e2412559"},"PeriodicalIF":14.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tunable Hierarchically Porous Gadolinium-Based Metal-Organic Frameworks for Bacteria-Targeting Magnetic Resonance Imaging and In Situ Anti-Bacterial Therapy.

IF 14.3 1区材料科学

Advanced Science Pub Date : 2025-02-20 DOI: 10.1002/advs.202415209

Youyi Yu, Tianming Cui, Chang Liu, Weitao Yang, Bingbo Zhang

{"title":"Tunable Hierarchically Porous Gadolinium-Based Metal-Organic Frameworks for Bacteria-Targeting Magnetic Resonance Imaging and In Situ Anti-Bacterial Therapy.","authors":"Youyi Yu, Tianming Cui, Chang Liu, Weitao Yang, Bingbo Zhang","doi":"10.1002/advs.202415209","DOIUrl":"https://doi.org/10.1002/advs.202415209","url":null,"abstract":"Currently, there are no non-invasive tools to accurately diagnose deep surgical site bacterial infections before they cause significant anatomical damage in the clinic. An urgent need exists for bacteria-targeting bifunctional probes for the detection of deep bacterial infections and precise in situ treatment. Herein, the bacteria-targeting 1-borono-3,5-benzenedicarboxylic acid (BBDC) ligand and paramagnetic Gd3 + into one single metal-organic frameworks (MOFs) are integrated, synergistically realizing bacteria-specific magnetic resonance imaging (MRI) diagnosis and MRI-guided antibacterial treatment. Molecular simulations and nitrogen adsorption-desorption experiments demonstrate that a hierarchical porous structure can be constructed by tuning the Gd3 + /BBDC ratio, which endows the Gd-BBDC1.25 MOFs with an impressive longitudinal proton relaxivity of 15.81 mM-1 s-1. In particular, the bacteria-targeting boronic acid group in BBDC remained intact during the MOF synthesis, ensuring that Gd-BBDC1.25 MOFs have a unique combination of high sensitivity and specificity for bacteria. Through an in situ reduction reaction, silver nanoparticles （Ag NPs）-modified Gd-BBDC1.25 MOFs to form Ag@Gd-BBDC1.25, an interfacial Schottky heterojunction nanozyme, which enhances their peroxidase (POD)-catalyze activity. Furthermore, it is demonstrated that the bacteria-targeting Ag@Gd-BBDC1.25 bifunctional probe can image as few as 105 colony-forming units (cfu) in vivo and effectively eradicate the bacteria in situ.","PeriodicalId":117,"journal":{"name":"Advanced Science","volume":" ","pages":"e2415209"},"PeriodicalIF":14.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Crystal Symmetry of Lead Halide Perovskites on the Optical Orientation of Excitons.

IF 14.3 1区材料科学

Advanced Science Pub Date : 2025-02-20 DOI: 10.1002/advs.202416782

Nataliia E Kopteva, Dmitri R Yakovlev, Eyüp Yalcin, Ina V Kalitukha, Ilya A Akimov, Mikhail O Nestoklon, Bekir Turedi, Oleh Hordiichuk, Dmitry N Dirin, Maksym V Kovalenko, Manfred Bayer

{"title":"Effect of Crystal Symmetry of Lead Halide Perovskites on the Optical Orientation of Excitons.","authors":"Nataliia E Kopteva, Dmitri R Yakovlev, Eyüp Yalcin, Ina V Kalitukha, Ilya A Akimov, Mikhail O Nestoklon, Bekir Turedi, Oleh Hordiichuk, Dmitry N Dirin, Maksym V Kovalenko, Manfred Bayer","doi":"10.1002/advs.202416782","DOIUrl":"https://doi.org/10.1002/advs.202416782","url":null,"abstract":"The great variety of lead halide perovskite semiconductors represents an outstanding platform for studying crystal symmetry effects on the spin-dependent properties. Access to them is granted through the optical orientation of exciton and carrier spins by circularly polarized photons. Here, the exciton spin polarization is investigated at 1.6 K cryogenic temperature in four lead halide perovskite crystals with different symmetries: (almost) cubic in FA0.9Cs0.1PbI2.8Br0.2 and FAPbBr3, and orthorhombic in MAPbI3 and CsPbBr3. Giant optical orientation of 85% is found for the excitons in FA0.9Cs0.1PbI2.8Br0.2, MAPbI3, and CsPbBr3, while it amounts to 20% in FAPbBr3. For all studied crystals, the optical orientation is robust to detuning of the laser photon energy from the exciton resonance, remaining constant for high energy detunings up to 0.3 eV, above which it continuously decreases to zero for detunings exceeding 1 eV. No acceleration of the spin relaxation for excitons with large kinetic energy is found in the cubic and orthorhombic crystals. This evidences the absence of the Dyakonov-Perel spin relaxation mechanism, which is based on the Rashba-Dresselhaus splitting of spin states at finite k-vectors. This indicates that the spatial inversion symmetry is maintained in perovskite crystals, independent of the cubic or orthorhombic phase.","PeriodicalId":117,"journal":{"name":"Advanced Science","volume":" ","pages":"e2416782"},"PeriodicalIF":14.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0