Article
Chemistry, Multidisciplinary
Yinghao Zhao, Qinghua Liang, Sufan Li, Yingying Chen, Xing Liu, Haozhe Sun, Chong Wang, Chang-Yin Ji, Jiafang Li, Yang Wang
Summary: This article presents a dynamic and multifunctional thermal emitter based on deformable nano-kirigami structures, which can achieve selective emittance and the variation of radiation intensity/wavelength by adjusting the geometric shape and the transformation of the structures. The authors also develop a thermal management device based on a composite structure of nano-kirigami and polydimethylsiloxane (PDMS) thin film, which can dynamically switch the state of cooling and heating by simply pressing the device.
Article
Thermodynamics
Zongguo Xue, Yunfei Yan, Kaiming Shen, Chenghua Zhang, Jinxiang You, Bladimir Ramos-Alvarado
Summary: In this study, a liquid-jet-cooled heat sink with a microporous flow diverter plate was proposed to reduce the maximum operating chip temperature and achieve uniform cooling rates. Different diverter opening ratios were considered, and the results showed that smaller opening ratios had better thermal performance and achieved more uniform temperatures. The results also indicated that heat sinks with small opening ratios had lower thermal resistance at the same pumping power input.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Johannes Kohler Mendizabal, Mahsa Montazeri, David Huitink, Nenad Miljkovic
Summary: The power densification of magnetic converters is hindered by the ineffective heat removal. The existing thermal management technologies for PCB transformers have limitations in improving overall thermal conductance and reducing temperature gradients. Direct liquid cooling technique reduces thermal resistances and temperature gradients. The choice between Novec 7300 and ethylene glycol depends on flow rate, pressure drop, and pumping power.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Nanoscience & Nanotechnology
Zhe Cheng, Fengwen Mu, Xiaoyang Ji, Tiangui You, Wenhui Xu, Tadatomo Suga, Xin Ou, David G. Cahill, Samuel Graham
Summary: This work introduces a thermal mapping technique for buried semiconductor interfaces and identifies weakly bonded interfaces caused by high-temperature annealing. It also highlights the capability of using steady-state temperature rise induced by TDTR laser to probe thermal boundary conductance variations of buried interfaces.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Weiqing Yang, Peng Xiao, Feng Ni, Chang Zhang, Jincui Gu, Shiao-Wei Kuo, Qingquan Liu, Tao Chen
Summary: Solar-to-thermal conversion is an efficient way to convert sunlight into thermal energy. This study designs a cost-effective, scalable, biodegradable nanocomposite for solar-to-thermal applications. By balancing photothermal and water-absorbing capacities, the designed solar evaporator achieves efficient evaporation and improved voltage output.
Article
Engineering, Environmental
Shen Chen, Wenkui Xing, Han Wang, Weizheng Cheng, Zhihui Lei, Feiyu Zheng, Peng Tao, Wen Shang, Benwei Fu, Chengyi Song, Michael D. Dickey, Tao Deng
Summary: This work presents a bottom-up approach to construct an isotropic network of liquid metal in polymer, which brings significant enhancement on the thermal and electrical conductivity of the composite. This isotropic liquid metal network has potential applications in 3D thermal management, flexible electronics, energy conversion, and soft robotics.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Xianghui Liu, Pan Wang, Chengyu Xiao, Liucheng Fu, Jun Xu, Di Zhang, Han Zhou, Tongxiang Fan
Summary: Metasurface-based mid-infrared stealth compatible with visual or laser is proposed using a machine-learning-enabled inverse design approach. The metasurface can rapidly generate multiple non-unique solutions to match desired spectra in multispectral requirements. It has low specular reflectance at near-infrared laser wavelength and enhanced broad absorptance peak at 5-8 μm, as well as excellent capability of radiative thermal control.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Wenkui Xing, Han Wang, Shen Chen, Peng Tao, Wen Shang, Benwei Fu, Chengyi Song, Tao Deng
Summary: This article presents a systematic study on the impact of structural engineering of metallic copper fillers on the thermal and electrical performance of gallium-based liquid metal composites. By optimizing the size, shape, and amount of fillers, significant enhancements in thermal conductivity and electrical conductivity can be achieved, leading to improved heat dissipation performance in electronic devices.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Chemistry, Physical
Chao Xu, Hong Liu, Shikuan Yang
Summary: Nanopatterns are crucial in various nanodevice applications, but current manufacturing techniques are laborious and expensive. This paper introduces an extremely simple drawing concept at the nanoscale (DAN) that indirectly fabricates rational nanopatterns by controlling the macroscopic movement of the substrate. The DAN method allows for the simple stacking of multiple surface nanopatterns of different materials, potentially leading to significant advances in nanofabrication when combined with sophisticated lithographic methods.
Article
Chemistry, Multidisciplinary
Hui Il Jeon, Seungyun Jo, Seungbae Jeon, Taesuk Jun, Jungwoo Moon, Jeong Ho Cho, Hyungju Ahn, Seungwoo Lee, Du Yeol Ryu, Thomas P. Russell
Summary: Upon exposure to UV light, the block copolymer PDMS-b-PPHA undergoes a trans-cis isomerization, resulting in the generation of healable, long-range ordered arrays of nanoscopic domains. The isomerization leads to an increase in dielectric constant and a decrease in Tg of the PPHA block. By combining an in-plane electric field, macroscopic monodomains of aligned cylindrical microdomains are achieved, and damage repair is observed with complete healing of scratches at a specific temperature. Subsequent exposure to visible light causes cis-trans isomerization and produces highly oriented PDMS cylindrical microdomains in a PPHA matrix.
Article
Chemistry, Multidisciplinary
Minqiang Wu, Tingxian Li, Pengfei Wang, Si Wu, Ruzhu Wang, Jie Lin
Summary: A dual-encapsulation strategy was used to fabricate highly conductive and liquid-free phase change composites by constructing polyurethane/graphite nanoplatelets hybrid networks. The new material exhibited excellent mechanical strength, liquid-free phase change, and stable thermal properties.
Article
Chemistry, Physical
Yangqin Liu, Lei Chen, Lin Liu, Pengfei Shi, Junhui Sun, Yang Wang, Linmao Qian
Summary: In this study, a convenient approach utilizing carboxylated graphene (Gr-COOH) coating with glycerol as lubricants was proposed to achieve superlubrication and reduce wear in industrial applications. Compared to the non-lubricated state, this strategy achieved an exceptionally low friction coefficient of 0.002 and reduced substrate wear volume by 4 orders of magnitude, with negligible wear of the counterpart balls. The transfer of Gr-COOH to the ball surface formed a low shear resistance interface, improving the hydrophilic properties of the substrate surface and facilitating continuous elastohydrodynamic lubrication.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yihui Wang, Wei Sha, Mi Xiao, Cheng-Wei Qiu, Liang Gao
Summary: This study presents an intelligent design framework for thermal metamaterials using a pre-trained deep learning model. It can achieve the desired functional structures of thermal metamaterials with exceptional speed and efficiency, regardless of arbitrary geometry. This research sets up a novel paradigm for the automatic and real-time design of thermal metamaterials.
ADVANCED MATERIALS
(2023)
Review
Physics, Multidisciplinary
Shuai Yang, Jun Wang, Gaole Dai, Fubao Yang, Jiping Huang
Summary: Classical thermodynamics describes natural systems passively, while thermal metamaterials allow for active manipulation of heat phenomena in artificial systems. These metamaterials can control heat transfer in various ways, such as conduction, conduction-convection, conduction-radiation, and conduction-convection-radiation.
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
(2021)
Article
Thermodynamics
Bing Yao, Hengheng Zhu, Yue Ding, Congcong Luo, Teng Chen, Jun Zhou, Ying Chen, Pengcheng Lin
Summary: This paper focuses on the development of high thermal conductive Kevlar@SiC membranes (KSMs) using a new mechanism to induce liquid-crystalline orientation in nanocomposites. A high in-plane thermal conductivity was achieved in KSMs, along with potential applications in LED lamp thermal management systems and waste heat utilization.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Irina Zubritskaya, Nicolo Maccaferri, Xabier Inchausti Ezeiza, Paolo Vavassori, Alexandre Dmitriev
Article
Chemistry, Multidisciplinary
Gustav Jonsson, Daniel Tordera, Tavakol Pakizeh, Manoj Jaysankar, Vladimir Miljkovic, Lianming Tong, Magnus P. Jonsson, Alexandre Dmitriev
Article
Nanoscience & Nanotechnology
Samatha Benedict, Chatdanai Lumdee, Alexandre Dmitriev, Srinivasan Anand, Navakanta Bhat
Article
Physics, Applied
Nicolo Maccaferri, Irina Zubritskaya, Ilya Razdolski, Ioan-Augustin Chioar, Vladimir Belotelov, Vassilios Kapaklis, Peter M. Oppeneer, Alexandre Dmitriev
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Physics, Applied
Gaia Petrucci, Alessio Gabbani, Ihar Faniayeu, Esteban Pedrueza-Villalmanzo, Giuseppe Cucinotta, Matteo Atzori, Alexandre Dmitriev, Francesco Pineider
Summary: This study explores macroscopic enantiomeric magnetophotonic metasurfaces assembled via hole-mask colloidal lithography, showing large CD response induced by the presence of 3D- and 2D-features in chiral nanoantennas. The identification of reciprocal and non-reciprocal contributions promises high-sensitivity chiral sensors and advanced macroscopic optical devices operating with polarized light.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Analytical
Eynas Amer, Mikolaj Wozniak, Gustav Jonsson, Fredrik Arrhen
Summary: In this study, the use of a fast-opening valve (FOV) in a shock tube for dynamic pressure measurements showed advantages over traditional diaphragms, including better repeatability, eight times faster operation, and the possibility of test sequence automation.
Article
Materials Science, Multidisciplinary
Karl Jousten, Matthias Bernien, Frederic Boineau, Nenad Bundaleski, Claus Illgen, Berthold Jenninger, Gustav Jonsson, Janez Setina, Orlando M. N. D. Teodoro, Martin Vicar
Summary: The novel ionisation vacuum gauge designed by the European project 16NRM05 consortium has a defined electron path length, making it suitable as a reference standard in the calibration range of 10-6 Pa to 10-2 Pa. Prototype gauges produced by two manufacturers showed predictable sensitivities and stability.
Article
Physics, Multidisciplinary
Joel Kuttruff, Alessio Gabbani, Gaia Petrucci, Yingqi Zhao, Marzia Iarossi, Esteban Pedrueza-Villalmanzo, Alexandre Dmitriev, Antonietta Parracino, Giuseppe Strangi, Francesco De Angelis, Daniele Brida, Francesco Pineider, Nicolo Maccaferri
Summary: The study shows that active nanophotonics can be achieved by controlling the optical anisotropy on the magneto-optical activity in nonmagnetic hyperbolic nanoparticles, leading to tunable magneto-optical activity across the visible and near infrared spectral range. This is driven by the coupling of metallic-induced electric and dielectric-induced magnetic dipolar optical modes with static magnetic fields.
PHYSICAL REVIEW LETTERS
(2021)
Article
Instruments & Instrumentation
Eynas Amer, Gustav Jonsson, Fredrik Arrhen
Summary: This paper introduces a robust method for dynamic characterization of pressure measuring systems used in time-varying pressure applications. By utilizing a shock tube setup and an optical probe, the dynamic response of the measuring systems can be accurately measured and presented in Bode diagrams. The provided information is valuable for developing reliable models of dynamic pressure measuring systems and establishing traceability chain for dynamic pressure calibration.
Article
Engineering, Mechanical
A. Svete, E. Amer, G. Jonsson, J. Kutin, F. Arrhen
Summary: This paper proposes and evaluates a method for correcting the frequency response of a pressure measurement system obtained with a calibration using a shock tube for the acceleration-induced errors due to vibrations. The proposed method is based on the predetermined frequency response of the pressure measurement system to the accelerations and simultaneous measurements of the vibration accelerations of the pressure sensor during its calibration in the shock tube. The results show that the proposed method effectively eliminates acceleration-induced errors in the sensitivity and phase frequency responses of an acceleration-sensitive piezoelectric pressure measurement system being calibrated with a shock tube.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Chemistry, Multidisciplinary
Kshiti Mishra, Agne Ciuciulkaite, Mario Zapata-Herrera, Paolo Vavassori, Vassilios Kapaklis, Theo Rasing, Alexandre Dmitriev, Alexey Kimel, Andrei Kirilyuk
Summary: Research on the influence of plasmon nanoantennas on the demagnetization dynamics of ferrimagnetic alloy films shows that under resonant optical femtosecond pumping, Ag nanoring antennas reduce the demagnetization process in magnetic elements at the nanoscale, providing an important step towards achieving deterministic ultrafast all-optical magnetization switching in such systems.
Article
Nanoscience & Nanotechnology
Esteban Pedrueza-Villalmanzo, Francesco Pineider, Alexandre Dmitriev
Article
Chemistry, Multidisciplinary
Francesco Pineider, Esteban Pedrueza-Villalmanzo, Michele Serri, Addis Mekonnen Adamu, Evgeniya Smetanina, Valentina Bonanni, Giulio Campo, Lorenzo Poggini, Matteo Mannini, Cesar de Julian Fernandez, Claudio Sangregorio, Massimo Gurioli, Alexandre Dmitriev, Roberta Sessoli
MATERIALS HORIZONS
(2019)
Article
Nanoscience & Nanotechnology
Valerie Depauw, Christos Trompoukis, Ines Massiot, Wanghua Chen, Alexandre Dmitriev, Pere Roca i Cabarrocas, Ivan Gordon, Jef Poortmans
