Article
Thermodynamics
Anqi Chen, Fan Jiang, Jiajia Dong, Jeffrey Chen, Yuan Zhu
Summary: A novel ultra-thin loop heat pipe (UT-LHP) with capillary wick structures is developed for cooling mobile electronics. By using a novel print wick structuring process on copper substrates, the total thickness of the UT-LHP can be decreased to only 0.3 mm. The heat transfer performance has been evaluated under different heat loads and configurations, showing a minimal thermal resistance of 1.03 degrees C /W at a heat load of 3 W.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Caiman Yan, Hongming Li, Yong Tang, Xinrui Ding, Xuepeng Yuan, Yifu Liang, Shiwei Zhang
Summary: In this study, a novel ultra-thin vapor chamber (UTVC) with a thickness of only 0.5mm was prepared using composite capillary wicks. Compared to traditional 2D copper mesh wicks, the composite wick showed better heat transfer performance and significantly reduced maximum temperature. This improved UTVC provides a guarantee for heat dissipation in future high-power portable electronic devices.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
S. C. Zhao, Zikang Zhang, Runze Zhao, Tong Wu, Xiaoyu Zhang, Z. C. Liu, Wei Liu
Summary: A reliable cooling solution for high power electronic devices was proposed in this paper, which involved the design of two loop heat pipe systems with flat-plate evaporator. The thermal performance of the loop heat pipe with a new refrigerant, R1234ze (E), was investigated. Two cooling methods, liquid-condenser and air-condenser, were designed to meet different cooling requirements. The reliability of the solution was fully verified, and the system showed quick response and no failures under different operating conditions. The liquid-condenser achieved a maximum heat load of 270 W (16.9 W/cm2), while the air-condenser had a normal operating range of 10 W-150 W with a fan power of 20 W.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Review
Chemistry, Inorganic & Nuclear
Weikang Wang, Weiwei Zhao, Haotian Xu, Shujuan Liu, Wei Huang, Qiang Zhao
Summary: This review presents the characteristics, synthetic strategies, and applications of ultra-thin 2D COF nanosheets in functional electronic devices, as well as discusses the challenges and prospects they face in their synthesis and multifunctional application.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Thermodynamics
Ramesh Kumar, Francisco J. Montero, Ravita Lamba, Manish Vashishtha, Sushant Upadhyaya
Summary: This study proposes a novel hybrid system combining photovoltaics, heat pipes, thermoelectric generators, and radiative cooling, which effectively reduces the temperature of the photovoltaic module and improves conversion efficiency and energy production.
APPLIED THERMAL ENGINEERING
(2023)
Article
Computer Science, Cybernetics
Astrid M. L. Kappers, Max Fa Si Oen, Tessa J. W. Junggeburth, Myrthe A. Plaisier
Summary: This article presents an overview of handheld haptic navigation devices specifically designed and tested for pedestrians. The devices are categorized into indoor and outdoor use, with outdoor devices utilizing GPS tracking in smartphones and indoor devices relying on sensors, tracking, and localization systems within a building. The studies show that vibrotactile stimulation through a handheld user interface is effective for navigation instructions, with high success rates reported. Some indoor devices experience slower walking speeds and lower path efficiency, but these issues can potentially be addressed with training. Several outdoor devices are on the verge of commercial use, and specific instruction devices prove beneficial for individuals with visual and/or hearing impairments.
IEEE TRANSACTIONS ON HAPTICS
(2022)
Article
Computer Science, Information Systems
Nisreen Ameen, Nnamdi O. Madichie, Amitabh Anand
Summary: There is a significant gender gap in developing countries that is further exacerbated in post-conflict economies. This gap can be narrowed with the help of smartphones and mobile applications. This research investigates the economic and non-economic challenges faced by women entrepreneurs and how smartphone innovation can help overcome these challenges and develop effective marketing strategies. Through interviews with women entrepreneurs in Iraq, it was found that mobile applications offer innovative ways to overcome the challenges they face in running their businesses. The research also contributes to the development of a comprehensive analytical model for women in entrepreneurship by extending the 5 M model with technology-related elements.
INFORMATION SYSTEMS FRONTIERS
(2023)
Article
Energy & Fuels
Xianling Wang, Jingxuan Yang, Qiaowei Wen, Samson Shittu, Guangming Liu, Zining Qiu, Xudong Zhao, Zhangyuan Wang
Summary: A novel flat confined loop heat pipe (FCLHP) was proposed to alleviate the 'dry-out' phenomenon of evaporators with microchannels by providing an open flow space over the microchannel top surface. Experimental results showed that FCLHP could start up most quickly and reduce operating temperature by 10% at most under suitable cooling water temperature and flow rate, with lower thermal resistance and reduced temperature fluctuation.
Article
Energy & Fuels
Xianling Wang, Jingxuan Yang, Qiaowei Wen, Samson Shittu, Guangming Liu, Zining Qiu, Xudong Zhao, Zhangyuan Wang
Summary: In this study, a novel flat confined loop heat pipe (FCLHP) was proposed to address the dry-out phenomenon of evaporators with microchannels and fulfill the thermal management requirements of electronic devices. The results showed that the FCLHP could operate effectively under specific conditions, reducing temperature fluctuations and thermal resistance.
Article
Engineering, Electrical & Electronic
Hui-Rang Hou, Qing-Hao Meng, Pei-Feng Qi, Tao Jing
Summary: This study successfully identified types and grades of Chinese liquors using an electronic nose system and a novel recognition method, achieving high average recognition accuracies of 97.5% and 99.0% for liquor-type identification and grade evaluation, which are significantly higher than traditional methods. This novel approach is of great significance for liquor detection and industrial quality assurance methods.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Medicine, General & Internal
Abdurrahim Yilmaz, Gulsum Gencoglan, Rahmetullah Varol, Ali Anil Demircali, Meysam Keshavarz, Huseyin Uvet
Summary: Dermoscopy is a technique that uses polarized or non-polarized light sources to visually examine the skin and distinguish invisible lesion patterns. This study presents a dataset of dermoscopic images taken with a mobile phone-attached hand-held dermoscope, and develops deep learning models for classifying skin lesions.
JOURNAL OF CLINICAL MEDICINE
(2022)
Review
Thermodynamics
Michael J. Gibbons, Marco Marengo, Tim Persoons
Summary: The emergence of foldable and wearable devices like Samsung Galaxy Fold and Huawei Mate X has led to a demand for increased battery capacity and processor performance, as well as the need for flexible thermal management solutions. This research provides a comprehensive review of rigid and flexible ultra-thin heat pipe technologies, exploring various types of heat pipes, their thermal performance, novel manufacturing processes, and potential future research directions in this field.
APPLIED THERMAL ENGINEERING
(2021)
Article
Optics
Do Hyeon Kim, Gil Ju Lee, Se-Yeon Heo, Soomin Son, Kyeong Muk Kang, Heon Lee, Young Min Song
Summary: This study introduces a new ultra-thin and highly efficient selective emitter that can achieve efficient radiative cooling within the atmospheric window. Compared to traditional photonic structures, this selective emitter has a simpler and more cost-effective manufacturing process.
Article
Thermodynamics
Feng Zhou, Guohui Zhou, Jingzhi Zhou, Xiulan Huai, Yawen Jiang, Qiang Huang
Summary: An integrated composite wick with multi-artery channels structure was proposed in this research, imitating the Laval nozzle in porosity. The UTVC showed advantages in liquid reflow, vapor diffusion, and supporting the upper and lower covers. Experimental results demonstrated a reduction in maximum temperature difference by 67.7% compared to copper plate, and a minimum spreading resistance of 0.063 degrees C/W under high heat load and cooling air flow rate.
CASE STUDIES IN THERMAL ENGINEERING
(2022)