物理最新文献

{"title":"Stretchable snake electrodes and porous dielectric layers for advanced flexible pressure sensors","authors":"Xiaohong Wen,&nbsp;Xinle Han,&nbsp;Yongliang Deng,&nbsp;Xinyue Zhang,&nbsp;Xiumin Gao,&nbsp;Xiangmei Dong,&nbsp;Xuefeng Zhao","doi":"10.1007/s00339-025-08278-4","DOIUrl":"10.1007/s00339-025-08278-4","url":null,"abstract":"<div><p>Conventional flexible electrodes used in capacitive flexible pressure sensors require cumbersome manufacturing processes, high production costs, and harsh operating conditions. Thus, these limit the wide application of conventional flexible electrodes. To solve these problems, we reported a capacitive flexible sensor based on flexible serpentine electrodes fabricated by direct ink writing method and porous polydimethylsiloxane (PDMS) dielectric layer. The sensor has a simple structure and low production cost. It has a quick response time, wide detection range, and can remain stable for up to 200 cycles. It can also be used to monitor human movement. We also made 5 × 5 sensor arrays to detect spatial pressure distribution. This pressure sensor has wide application scenarios in the future of wearable electronics.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 2","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced photocatalytic water-splitting performance of innovative silicon carbide (SiC) via suppression of photocorrosion and self-oxidation: a mini-review","authors":"Alaa Nihad Tuama,&nbsp;Muhammad Hasnain Jameel,&nbsp;Laith H. Alzubaidi,&nbsp;Zahraa N. Salman,&nbsp;Khalid Haneen Abass,&nbsp;Fouad Sh Hashim,&nbsp;Karar Abdali","doi":"10.1140/epjp/s13360-025-06043-3","DOIUrl":"10.1140/epjp/s13360-025-06043-3","url":null,"abstract":"<div><p>Over the past few decades, there has been an increasing trend toward researching novel photocatalysts for water splitting and protecting the environment from pollution using sunlight. One approach promising for converting solar energy into sustainable hydrogen fuel is solar water splitting using silicon carbide photocatalyst. SiC nanostructures have garnered much attention from researchers due to their unique chemical and physical characteristics for solar-water-splitting applications. Water splitting with the use of solar energy is a clean, environmentally beneficial method that can help overcome the energy issue and make a big contribution to environmental preservation. The development, difficulties, and prospects of employing SiC for water-splitting-based hydrogen production are covered and summarized in this paper. Moreover, self-oxidation, photocorrosion, and electron–hole recombination have all been used to analyze SiC’s photocatalytic performance.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two-photon excited fluorescence with shaped laser pulses for refractive beams","authors":"S. S. A. S. Bukhari,&nbsp;R. Gottschalk,&nbsp;A. Lindinger","doi":"10.1140/epjd/s10053-025-00953-8","DOIUrl":"10.1140/epjd/s10053-025-00953-8","url":null,"abstract":"<p>We report two-photon excited fluorescence of dyes for refracted laser beams by utilizing tailored laser pulses. A fluorescence contrast difference due to phase shaping could be achieved between different coumarin dyes. Particularly, an increased contrast difference is obtained for configurations close to the Brewster angle. Furthermore, by using a subsequent deformable phase plate for spatial shaping it was possible to precisely adjust the laser beam for controlled refraction at the liquid dye surface. A polarization-dependent refraction was observed when directing the shaped laser beam on the curved liquid adhesion meniscus close to the cuvette wall. This results in a refraction-dependent contrast difference. The presented method could be utilized for surface-sensitive biophotonic imaging applications.</p>","PeriodicalId":789,"journal":{"name":"The European Physical Journal D","volume":"79 2","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjd/s10053-025-00953-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A model of inflation consistent with Planck 2018 and BICEP/Keck data","authors":"Li-Yang Chen,&nbsp;Hongwei Yu,&nbsp;Puxun Wu","doi":"10.1140/epjc/s10052-024-13728-z","DOIUrl":"10.1140/epjc/s10052-024-13728-z","url":null,"abstract":"<div><p>We establish a phenomenological inflation model in this paper and find that the predicted values of the spectral index and the tensor-to-scalar ratio are well consistent with the results from the Planck 2018 survey and the BICEP/Keck array measurement, significantly improving the theoretical precision in describing the early universe’s inflationary process. After inflation, we find that preheating can occur from the tachyonic instability or the parametric resonance, which depends on the value of one of model parameters.</p></div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"85 2","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-024-13728-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dealing with data gaps for TianQin with massive black hole binary signal","authors":"Lu Wang,&nbsp;Hong-Yu Chen,&nbsp;Xiangyu Lyu,&nbsp;En-Kun Li,&nbsp;Yi-Ming Hu","doi":"10.1140/epjc/s10052-025-13810-0","DOIUrl":"10.1140/epjc/s10052-025-13810-0","url":null,"abstract":"<div><p>Space-borne gravitational wave detectors like TianQin might encounter data gaps due to factors like micro-meteoroid collisions or hardware failures. Such events will cause discontinuity in the data, presenting challenges to the data analysis for TianQin, especially for massive black hole binary mergers. Since the signal-to-noise ratio (SNR) accumulates in a non-linear way, a gap near the merger could lead to a significant loss of SNR. It could introduce bias in the estimate of noise properties, and the results of the parameter estimation. In this work, using simulated TianQin data with injected a massive black hole binary merger, we study the window function method, and for the first time, the inpainting method to cope with the data gap, and an iterative estimate scheme is designed to properly estimate the noise spectrum. We find that both methods can properly estimate noise and signal parameters. The easy-to-implement window function method can already perform well, except that it will sacrifice some SNR due to the adoption of the window. The inpainting method is slower, but it can minimize the impact of the data gap.</p></div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"85 2","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-025-13810-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Double exponential smoothing slime mould algorithm for disease detection in IoT healthcare system","authors":"Tzu-Chia Chen","doi":"10.1140/epjp/s13360-025-06032-6","DOIUrl":"10.1140/epjp/s13360-025-06032-6","url":null,"abstract":"<div><p>This paper presents an algorithm, called the double exponential smoothing slime mould algorithm (DeSSMA), which is formulated to train deep learning models for the precise detection of diseases in patients. The DeSSMA is designed by integrating the principles of double exponential smoothing with the slime mould algorithm. The parameters, including energy depletion, link lifetime (LLT), and distance, are considered by the proposed DeSSMA as objectives aimed at optimizing data routing efficiency. In the base station, a deep residual network (DRN) is trained using the proposed DeSSMA algorithm, which is utilized for disease detection following the processes of data preprocessing, augmentation, and feature selection. Finally, performance evaluation of the DeSSMA-DRN framework is conducted using metrics such as energy consumption, LLT, accuracy, sensitivity, specificity, and receiver operating characteristic. The findings reveal that the proposed framework achieved a minimal energy depletion rate of 0.412 (J), an LLT rate of 0.318, an increased accuracy rate of 0.959, a high sensitivity rate of 0.967, and a specificity rate of 0.931.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bimetallic zinc-silver nanocomposites for superior antimicrobial efficacy","authors":"Naveen Kumar Madipoju,&nbsp;Sarvani Jowhar Khanam,&nbsp;Greeshma Sunkari,&nbsp;Sai Madhuri Vasamsetti,&nbsp;Vangala Divyasri,&nbsp;Vijay Morampudi,&nbsp;Ramu Naidu Savu,&nbsp;Murali Banavoth,&nbsp;Sreenivas Banne,&nbsp;Imran Hasan,&nbsp;Parvathalu Kalakonda","doi":"10.1007/s00339-025-08289-1","DOIUrl":"10.1007/s00339-025-08289-1","url":null,"abstract":"<div><p>Traditional treatments for microbial infections often have adverse effects and consequences, while chemically synthesized nanoparticles can produce harmful by-products. This study employed a green synthesis approach to produce zinc-silver bimetallic nanoparticles (Zn-Ag BMNPs) using the leaf extract of <i>Tinospora cordifolia</i> (TC). Characterization of the synthesized ZnNPs and Zn-Ag BMNPs revealed diverse structural and functional properties. FTIR analysis of these samples confirmed the anchoring of pytochmical groups on the surface of BMNPs, while XRD pattern revealed structural details with a crystallite size of approximately 19 nm. UV–Vis spectroscopy confirmed the formation of Zn-Ag BMNPs with absorption peaks in the range of 250–450 nm, and the optical energy gap was measured as 3.1 eV using Tauc plot analysis. Stability in aqueous suspensions was supported by zeta potential values of – 20.5 mV and – 22.7 mV, suggesting minimal aggregation. The potential antibacterial efficacy was assessed using disk diffusion and minimum inhibitory concentration (MIC) assays against <i>Escherichia coli</i> (<i>E. coli</i>). Zn-Ag BMNPs exhibited superior antimicrobial properties, achieving a maximum inhibition zone of 4 mm at optimal concentrations, while ZnNPs displayed comparatively weaker activity. These findings suggest that synthesized Zn-Ag BMNPs nanocomposites may have significant senergetic effect in treating chronic diseases and addressing the aforementioned issues.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 2","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00339-025-08289-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First demonstration of a TES based cryogenic Li(_2)MoO(_4) detector for neutrinoless double beta decay search","authors":"G. Bratrud,&nbsp;C. L. Chang,&nbsp;R. Chen,&nbsp;E. Cudmore,&nbsp;E. Figueroa-Feliciano,&nbsp;Z. Hong,&nbsp;K. T. Kennard,&nbsp;S. Lewis,&nbsp;M. Lisovenko,&nbsp;L. O. Mateo,&nbsp;V. Novati,&nbsp;V. Novosad,&nbsp;E. Oliveri,&nbsp;R. Ren,&nbsp;J. A. Scarpaci,&nbsp;B. Schmidt,&nbsp;G. Wang,&nbsp;L. Winslow,&nbsp;V. G. Yefremenko,&nbsp;J. Zhang,&nbsp;D. Baxter,&nbsp;M. Hollister,&nbsp;C. James,&nbsp;P. Lukens,&nbsp;D. J. Temples","doi":"10.1140/epjc/s10052-025-13844-4","DOIUrl":"10.1140/epjc/s10052-025-13844-4","url":null,"abstract":"<div><p>Cryogenic calorimetric experiments to search for neutrinoless double-beta decay (<span>(0nu beta beta )</span>) are highly competitive, scalable and versatile in isotope. The largest planned detector array, CUPID, is comprised of about 1500 individual Li<span>(_{2})</span> <span>(^{100})</span>MoO<span>(_4)</span> detector modules with a further scale up envisioned for a follow up experiment (CUPID-1T). In this article, we present a novel detector concept targeting this second stage with a low impedance TES based readout for the Li<span>(_2)</span>MoO<span>(_4)</span> absorber that is easily mass-produced and lends itself to a multiplexed readout. We present the detector design and results from a first prototype detector operated at the NEXUS shallow underground facility at Fermilab. The detector is a 2-cm-side cube with 21 g mass that is strongly thermally coupled to its readout chip to allow rise-times of <span>(sim )</span>0.5 ms. This design is more than one order of magnitude faster than present NTD based detectors and is hence expected to effectively mitigate backgrounds generated through the pile-up of two independent two neutrino decay events coinciding close in time. Together with a baseline resolution of 1.95 keV (FWHM) these performance parameters extrapolate to a background index from pile-up as low as <span>(5cdot 10^{-6})</span> counts/keV/kg/yr in CUPID size crystals. The detector was calibrated up to the MeV region showing sufficient dynamic range for <span>(0nu beta beta )</span> searches. In combination with a SuperCDMS HVeV detector this setup also allowed us to perform a precision measurement of the scintillation time constants of Li<span>(_2)</span>MoO<span>(_4)</span>, which showed a primary component with a fast O(20 <span>(upmu )</span>s) time scale.</p></div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"85 2","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11785649/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143077865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermodynamics of a Schwarzschild black hole surrounded by quintessence in the generalized uncertainty principle framework","authors":"Soham Sen,&nbsp;Abhijit Dutta,&nbsp;Sunandan Gangopadhyay","doi":"10.1140/epjc/s10052-025-13811-z","DOIUrl":"10.1140/epjc/s10052-025-13811-z","url":null,"abstract":"<div><p>We investigate the thermodynamics of a Schwarzschild black hole, surrounded by the quintessence energy-matter in the linear and quadratic generalized uncertainty principle framework. Considering the variance in the position to be of the order of the event horizon radius and equating the variance in the momentum to the Hawking temperature of the black hole, we substitute these variances in the deformed algebra. From there we obtained the generalized uncertainty principle-modified black hole temperature and eventually the specific heat of the black hole. Then we calculate the critical as well as the remnant mass and obtain the entropy relation. We observe that the entropy relation includes the usual leading order “<i>area divided by four</i>” term, sub-leading logarithmic term, and higher order inverse of the area corrections. Finally, calculating the energy output as a function of time, we obtain the evaporation time of the black hole. The results show the dependence of the quintessence parameter on the thermodynamic quantities in the framework of linear and quadratic generalized uncertainty principle.</p></div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"85 2","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-025-13811-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combining hybrid and opaque scintillator techniques in the search for double beta plus decays","authors":"Manuel Böhlers,&nbsp;Sebastian Böser,&nbsp;Magdalena Eisenhuth,&nbsp;Cloé Girard-Carillo,&nbsp;Kitzia M. Hernandez Curiel,&nbsp;Bastian Keßler,&nbsp;Kyra Mossel,&nbsp;Veronika Palušová,&nbsp;Stefan Schoppmann,&nbsp;Alfons Weber,&nbsp;Michael Wurm","doi":"10.1140/epjc/s10052-025-13847-1","DOIUrl":"10.1140/epjc/s10052-025-13847-1","url":null,"abstract":"<div><p>Double beta plus decay is a rare nuclear disintegration process. Difficulties in its measurement arise from suppressed decay probabilities, experimentally challenging decay signatures and low natural abundances of suitable candidate nuclei. In this article, we propose a new detector concept to overcome these challenges. It is based on the first-time combination of hybrid and opaque scintillation detector technology paired with novel light read-out techniques. This approach is particularly suitable for detecting positrons (beta plus) signatures. We expect to discover two-neutrino double beta plus decay modes within 1 tonne-week exposure and are able to probe neutrinoless double beta plus decays at several orders of magnitude improved significance compared to current experimental limits.</p></div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"85 2","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-025-13847-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}