Fundamental Research最新文献

Terahertz receiver based on room-temperature Rydberg-atoms 基于室温里德堡原子的太赫兹接收器

IF 6.2 3区综合性期刊

Fundamental Research Pub Date : 2025-05-01 DOI: 10.1016/j.fmre.2023.02.019

Ya-Yi Lin , Zhen-Yue She , Zhi-Wen Chen , Xian-Zhe Li , Cai-Xia Zhang , Kai-Yu Liao , Xin-Ding Zhang , Jie-Hua Chen , Wei Huang , Hui Yan , Shi-Liang Zhu

引用次数: 0

Investigating the central place theory using trajectory big data 利用轨迹大数据研究中心地理论

IF 6.2 3区综合性期刊

Fundamental Research Pub Date : 2025-05-01 DOI: 10.1016/j.fmre.2023.08.007

Pengjun Zhao , Haoyu Hu , Zhao Yu

{"title":"Investigating the central place theory using trajectory big data","authors":"Pengjun Zhao , Haoyu Hu , Zhao Yu","doi":"10.1016/j.fmre.2023.08.007","DOIUrl":"10.1016/j.fmre.2023.08.007","url":null,"abstract":"<div><div>The human settlement system is central to land use, infrastructure development, and environmental impacts. Although central place theory (CPT) was proposed about 90 years ago and has been extensively examined by many researchers, to what extent CPT can explain the current rural settlement system in the changing age of informatization and geospatial reconstruction remains to be explored. This paper aims to contribute fresh evidence for settlement systems and examine the applicability of CPT's quantitative laws by using the trajectory data of 2.0362 billion trips from 37.53 million mobile phone users in China's Jing-Jin-Ji region (218,000 km<sup>2</sup> area). We found that the settlement system's distribution patterns and service range conformed with the hierarchical law in CPT. However, the former was closer to the administrative principle (<em>K</em> = 7) in Christaller's theory, while the latter was nearer to the marketing principle (<em>K</em> = 3). The basic service range of all levels of settlements for rural residents was approximately 3 km, which was reflected by the rural residents' 3 km travel volume peak point. When exceeding this distance, the relationship between travel volume and distance distribution changed from linear increase to power-law attenuation. The traditional three principles of CPT influenced the settlements’ service range and <em>K</em> value. Nevertheless, the specific roles of the influencing factors varied in space. The findings of this paper would enhance our knowledge of CPT and settlement systems in the context of a fast growing and rapidly urbanizing society.</div></div>","PeriodicalId":34602,"journal":{"name":"Fundamental Research","volume":"5 3","pages":"Pages 1084-1096"},"PeriodicalIF":6.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134915073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Emerging optoelectronic architectures in carbon nanotube photodetector technologies 碳纳米管光电探测器技术中的新兴光电架构

IF 6.2 3区综合性期刊

Fundamental Research Pub Date : 2025-05-01 DOI: 10.1016/j.fmre.2023.11.001

Xiaolu Xia , Shaoyuan Zhou , Ying Wang , Zhiyong Zhang

{"title":"Emerging optoelectronic architectures in carbon nanotube photodetector technologies","authors":"Xiaolu Xia , Shaoyuan Zhou , Ying Wang , Zhiyong Zhang","doi":"10.1016/j.fmre.2023.11.001","DOIUrl":"10.1016/j.fmre.2023.11.001","url":null,"abstract":"<div><div>Photodetectors are the fundamental building blocks for many optoelectronic systems, including night vision, optical communications, biomedical imaging, security and motion detection. Carbon nanotubes (CNTs), which have a direct-bandgap structure, a broad spectral response and a large absorption coefficient, provide an ideal research platform for the exploration of high-performance infrared photodetectors. In the past twenty years, great efforts have been devoted to improve detection sensitivity via adopting high-purity CNT films, various doping strategies, optical manipulations and sensitizing nanostructures. Despite considerable strides made, challenges remain in simultaneously achieving high responsivity, low dark current and fast response. In this Review, we summarize recent advances on key device construction strategies and underlying concepts that contribute to improve performance of fabricated CNT photodetectors. The newly emerging heterojunction gated CNT transistors and their potential are highlighted to overcome trade-offs between the optical and electronic processes. Novel applications of CNT photodetectors are further summarized for advanced optoelectronic technologies.</div></div>","PeriodicalId":34602,"journal":{"name":"Fundamental Research","volume":"5 3","pages":"Pages 1153-1168"},"PeriodicalIF":6.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139303306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

What can we learn from the 2008 financial crisis for global power decarbonization after COVID-19? 2008年金融危机对新冠肺炎疫情后全球电力脱碳有何启示?

IF 6.2 3区综合性期刊

Fundamental Research Pub Date : 2025-05-01 DOI: 10.1016/j.fmre.2023.02.017

Pengfei Zhang , Xu Zhao , Laixiang Sun , Jian Zuo , Wendong Wei , Xi Liu , Xu Peng , Yuli Shan , Shuping Li , Liming Ge , Kuishuang Feng , Jiashuo Li

{"title":"What can we learn from the 2008 financial crisis for global power decarbonization after COVID-19?","authors":"Pengfei Zhang , Xu Zhao , Laixiang Sun , Jian Zuo , Wendong Wei , Xi Liu , Xu Peng , Yuli Shan , Shuping Li , Liming Ge , Kuishuang Feng , Jiashuo Li","doi":"10.1016/j.fmre.2023.02.017","DOIUrl":"10.1016/j.fmre.2023.02.017","url":null,"abstract":"<div><div>Since the outbreak of the COVID-19 pandemic, power generation and the associated CO<sub>2</sub> emissions in major countries have experienced a decline and rebound. Knowledge on how an economic crisis affects the emission dynamics of the power sector would help alleviate the emission rebound in the post-COVID-19 era. In this study, we investigate the mechanism by which the 2008 global financial crisis sways the dynamics of power decarbonization. The method couples the logarithmic mean Divisia index (LMDI) and environmentally extended input-output analysis. Results show that, from 2009 to 2011, global power generation increased rapidly at a rate higher than that of GDP, and the related CO<sub>2</sub> emissions and the emission intensity of global electricity supply also rebounded; the rapid economic growth in fossil power-dominated countries (e.g., China, the United States, and India) was the main reason for the growth of electricity related CO<sub>2</sub> emissions; and the fixed capital formation was identified as the major driver of the rebound in global electricity consumption. Lessons from the 2008 financial crisis can provide insights for achieving a low-carbon recovery after the COVID-19 crisis, and specific measures have been proposed, for example, setting electricity consumption standards for infrastructure construction projects to reduce electricity consumption induced by the fixed capital formation, and attaching energy efficiency labels and carbon footprint labels to metal products (e.g., iron and steel, aluminum, and fabricated metal products), large quantities of which are used for fixed capital formation.</div></div>","PeriodicalId":34602,"journal":{"name":"Fundamental Research","volume":"5 3","pages":"Pages 1221-1232"},"PeriodicalIF":6.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44864879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of engine heat source conditions on a small-scale CO2 power generation system 发动机热源条件对小型CO2发电系统的影响

IF 6.2 3区综合性期刊

Fundamental Research Pub Date : 2025-05-01 DOI: 10.1016/j.fmre.2023.05.002

Ligeng Li , Hua Tian , Xin Lin , Xianyu Zeng , Yurong Wang , Lingfeng Shi , Xuan Wang , Xingyu Liang , Gequn Shu

{"title":"Influence of engine heat source conditions on a small-scale CO2 power generation system","authors":"Ligeng Li , Hua Tian , Xin Lin , Xianyu Zeng , Yurong Wang , Lingfeng Shi , Xuan Wang , Xingyu Liang , Gequn Shu","doi":"10.1016/j.fmre.2023.05.002","DOIUrl":"10.1016/j.fmre.2023.05.002","url":null,"abstract":"<div><div>Employing a CO<sub>2</sub> power generation system to recover waste heat from engines can reduce fuel consumption and CO<sub>2</sub> emissions by producing additional electric power. Nevertheless, the fluctuation in engine operating conditions would cause variations in waste heat sources and affect system performances largely. Hence, an experimental performance test at various engine conditions was implemented by the construction of a small-scale (10 kW) CO<sub>2</sub> power generation system. Key components, including the turbine expander and printed circuit heat exchanger, were specifically designed and constructed. The steady-state and transient performances of critical components and the integrated system were carried out. Experimental results of the turbine expander at varying engine conditions revealed the potential for long-term and stable operation under dynamic mass flow rate, inlet temperature, and pressure ratio. The maximum total generation power and efficiency reached 11.55 kW and 58.92%. The printed circuit heat exchanger used to exploit engine exhaust gas showed satisfactory performances in balancing the trade-off between heat transfer and pressure drop. The total pressure drop of engine exhaust gas was lower than 4 kPa determined by both exhaust mass flow and temperature, considering all the variable engine conditions. Despite that a performance penalty was observed at the off-design operation of the integrated system because of the decrease in the waste heat input, the maximum net power and thermal efficiency reached 10.57 kW and 6.59%, respectively, at the engine condition of 1100 rpm, 1200 N m, with a relative improvement of 6.3% in engine brake thermal efficiency.</div></div>","PeriodicalId":34602,"journal":{"name":"Fundamental Research","volume":"5 3","pages":"Pages 981-998"},"PeriodicalIF":6.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45922869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

RetroV2X: A new vehicle-to-everything (V2X) paradigm with visible light backscatter networking RetroV2X：一种具有可见光后向散射网络的万物互联（V2X）新模式

IF 6.2 3区综合性期刊

Fundamental Research Pub Date : 2025-05-01 DOI: 10.1016/j.fmre.2022.01.038

Chenren Xu, Kenuo Xu, Lilei Feng, Bo Liang

{"title":"RetroV2X: A new vehicle-to-everything (V2X) paradigm with visible light backscatter networking","authors":"Chenren Xu, Kenuo Xu, Lilei Feng, Bo Liang","doi":"10.1016/j.fmre.2022.01.038","DOIUrl":"10.1016/j.fmre.2022.01.038","url":null,"abstract":"<div><div>The Vehicle-to-Everything (V2X) technology has become essential with the increasing interest in intelligent transportation systems. It connects multiple vehicles and infrastructure by digitizing road traffic signs, signals, and other facilities and arranging sensing devices. However, conventional V2X solutions, such as Celluar Vehicle-to-Everything (C-V2X), have been slow to deploy due to their high cost, external power requirement, and dependence on Internet backhaul connectivity. Recently, Visible Light Backscatter Communication (VLBC) technology has emerged as a promising solution to overcome the practical issues of conventional V2X technologies. This paper presents <span>RetroV2X</span>, a protocol designed to support a networked VLBC-based V2X system that facilitates the transmission of road sensory data between vehicles and road infrastructure. We have designed several mechanisms, including backoff, virtual ID assignment, and excitatory carrier sensing, to handle different types of collisions, namely downlink, synchronous uplink, and asynchronous uplink collisions. Overhear and relay mechanisms are also designed to improve the performance at high vehicle densities. Our evaluation demonstrates that <span>RetroV2X</span> is capable of meeting the needs of V2X applications in typical rural road, town road, and highway scenarios with varying road sign densities, vehicle densities, and velocities.</div></div>","PeriodicalId":34602,"journal":{"name":"Fundamental Research","volume":"5 3","pages":"Pages 1204-1213"},"PeriodicalIF":6.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47975363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in human organs-on-chips and applications for drug screening and personalized medicine 人体器官芯片的进展及其在药物筛选和个性化医疗中的应用

IF 6.2 3区综合性期刊

Fundamental Research Pub Date : 2025-05-01 DOI: 10.1016/j.fmre.2023.12.019

Chenyang Zhou , Zhangjie Li , Kangyi Lu , Yijun Liu , Lian Xuan , Hongju Mao , Xiaolin Wang

{"title":"Advances in human organs-on-chips and applications for drug screening and personalized medicine","authors":"Chenyang Zhou , Zhangjie Li , Kangyi Lu , Yijun Liu , Lian Xuan , Hongju Mao , Xiaolin Wang","doi":"10.1016/j.fmre.2023.12.019","DOIUrl":"10.1016/j.fmre.2023.12.019","url":null,"abstract":"<div><div>The limitations of conventional animal tests and two-dimensional cell culture hinder their advancement in fundamental research and clinical/translational applications. As an emerging alternative technology, organ-on-a-chip serves as a platform that faithfully simulates the key phenotypical, physiological, and functional features of human tissues/organs through the accurate regulation of the parameters such as physical and biochemical microenvironment, as well as cellular patterns. In this review, we mainly introduce the recent progress in the organ-on-a-chip field, including lung, gut, heart, liver, vasculature and multiorgan studies. Furthermore, we highlight the potential applications in drug screening and personalized medicine. Finally, we conclude the review by addressing the current challenges and future perspective in the technology and commercialization of organ-on-chips. We anticipate that the development of organ-on-a-chip technology will revolutionize the studies on biology and medicine by providing new understanding of mechanisms of diseases and insights into clinical therapeutics.</div></div>","PeriodicalId":34602,"journal":{"name":"Fundamental Research","volume":"5 3","pages":"Pages 1258-1272"},"PeriodicalIF":6.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140466603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plasma treated water with metal ions enhances Pak Choi growth, salinity tolerance and accumulation of primary metabolites 经等离子体处理的含金属离子的水可促进白菜的生长、耐盐性和初级代谢物的积累

IF 6.2 3区综合性期刊

Fundamental Research Pub Date : 2025-05-01 DOI: 10.1016/j.fmre.2024.06.010

Rida Javed , Sohail Mumtaz , Kirubel Amsalu , Eun Ha Choi

{"title":"Plasma treated water with metal ions enhances Pak Choi growth, salinity tolerance and accumulation of primary metabolites","authors":"Rida Javed , Sohail Mumtaz , Kirubel Amsalu , Eun Ha Choi","doi":"10.1016/j.fmre.2024.06.010","DOIUrl":"10.1016/j.fmre.2024.06.010","url":null,"abstract":"<div><div>Salinity stress is a serious environmental threat that has a detrimental impact on agricultural yield and productivity. The effects of plasma-treated water (PTW) and metal ions (M) on Pak Choi growth and salt tolerance genes under salinity stress have not yet been studied. To bridge these gaps, we explored the effects of PTW and PTW + M, prepared using multi-electrode cylindrical dielectric barrier discharged plasma, on Pak Choi seedlings irrigated with 100 mM NaCl solution for 7 d, with an aim to improve plant tolerance to salinity. PTW and PTW + M significantly improved the length and dry weight of shoots and roots, as well as photosynthetic activity, by increasing chlorophyll a and b, pheophytin a and b, total pheophytin, and carotenoid contents. Plant biomass increased maximum of up to 54.4%, shoot length 18.1%, and root length 26.01% in the PTW + M group compared to the control. Furthermore, total chlorophyll and pheophytin content increased 2.16 and 1.55 times after PTW + M irrigation compared to control (DI irrigation) under salinity stress. PTW and PTW + M irrigation further reduced the plasma membrane permeability along with an increase in hydration and intracellular NO and Ca<sup>2+</sup> levels, with ionic balance and osmotic adjustment genes under salinity stress. Additionally, the treatments improved the primary metabolite accumulation of sugars, sugar alcohols, organic acids, and amino acids, as osmo-protectants, and modulated the adaptation to mitigate salinity stress. In conclusion, PTW and PTW + M irrigation mitigated salinity stress by promoting osmotic adjustment, membrane impermeability, hydration capacity, and the upregulation of salt tolerance genes and primary metabolites in Pak Choi seedlings under salinity stress.</div></div>","PeriodicalId":34602,"journal":{"name":"Fundamental Research","volume":"5 3","pages":"Pages 1011-1024"},"PeriodicalIF":6.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141840908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polymer depolymerization, recycling, and high-value transformation: Charting a sustainable future for polymer science 聚合物解聚、回收和高价值转化：描绘聚合物科学的可持续未来

IF 6.2 3区综合性期刊

Fundamental Research Pub Date : 2025-05-01 DOI: 10.1016/j.fmre.2025.03.019

Yanshan Gao , Xuefeng Fu , Yong Tang

引用次数: 0

Nanozymes: An emerging arsenal for the treatment of Candida albicans infection 纳米酶：治疗白色念珠菌感染的新武器

IF 6.2 3区综合性期刊

Fundamental Research Pub Date : 2025-05-01 DOI: 10.1016/j.fmre.2024.11.021

Yanni Song , Mengyuan Chang , Heng Dong , Ning Li , Guisheng Zeng , Yue Wang , Dongliang Yang

引用次数: 0