ORCID Profile
0000-0002-1560-7329
Current Organisations
Shaanxi University of Science and Technology
,
University of Tokyo
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Publisher: American Chemical Society (ACS)
Date: 08-08-2017
DOI: 10.1021/ACS.NANOLETT.7B02926
Abstract: The design of graphene-based composite with high thermal conductivity requires a comprehensive understanding of phonon coupling in nanosized graphene. We extended the two-temperature model to coupled groups of phonons. The study give new physical quantities, the phonon-phonon coupling factor and length, to characterize the couplings quantitatively. Besides, our proposed coupling length has an obvious dependence on system size. Our studies can not only observe the nonequilibrium between different groups of phonons but explain theoretically the thermal resistance inside nanosized graphene.
Publisher: American Chemical Society (ACS)
Date: 08-10-2019
Publisher: American Chemical Society (ACS)
Date: 27-04-2022
Publisher: Elsevier BV
Date: 2021
Publisher: Elsevier
Date: 2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9SM00853E
Abstract: Spontaneous rectification and absolute negative mobility can be realized in steady laminar flows with 2D Gaussian potentials.
Publisher: Elsevier BV
Date: 06-2021
Publisher: Springer Science and Business Media LLC
Date: 11-01-2022
DOI: 10.1038/S41467-021-27885-2
Abstract: There has been increasing interest in the emerging ionic thermoelectric materials with huge ionic thermopower. However, it’s challenging to selectively tune the thermopower of all-solid-state polymer materials because the transportation of ions in all-solid-state polymers is much more complex than those of liquid-dominated gels. Herein, this work provides all-solid-state polymer materials with a wide tunable thermopower range (+20~−6 mV K −1 ), which is different from previously reported gels. Moreover, the mechanism of p - n conversion in all-solid-state ionic thermoelectric polymer material at the atomic scale was presented based on the analysis of Eastman entropy changes by molecular dynamics simulation, which provides a general strategy for tuning ionic thermopower and is beneficial to understand the fundamental mechanism of the p - n conversion. Furthermore, a self-powered ionic thermoelectric thermal sensor fabricated by the developed p - and n -type polymers demonstrated high sensitivity and durability, extending the application of ionic thermoelectric materials.
Publisher: Elsevier
Date: 2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0MH01259A
Abstract: A hierarchically porous hydrogel (HPH) mediated by a polyion complex enables accelerated solar desalination performance in brine than in pure water.
Publisher: Elsevier BV
Date: 04-2021
Publisher: Elsevier BV
Date: 08-2020
Publisher: Elsevier BV
Date: 03-2021
Publisher: Elsevier BV
Date: 06-2023
Publisher: Wiley
Date: 12-2017
Abstract: A novel approachis proposed to enhance the thermal rectification ratio, namely, arranging two thermal rectifiers in series. Through theoretical analysis and molecular dynamics simulations on graphene hononic crystal structures, the results show that the series thermal rectifiers enhance thermal rectification ratio significantly, compared to a single rectifier. Meanwhile, the results of theoretical prediction match well with simulation results.
Publisher: MDPI AG
Date: 08-12-2017
DOI: 10.3390/POLYM9120688
Publisher: Elsevier BV
Date: 03-2023
Publisher: American Chemical Society (ACS)
Date: 15-07-2020
Publisher: American Physical Society (APS)
Date: 08-10-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6NR01992G
Abstract: Phononic (thermal) devices such as thermal diodes, thermal transistors, thermal logic gates, and thermal memories have been studied intensively. However, tunable thermal resistors have not been demonstrated yet. Here, we propose an instantaneously adjustable thermal resistor based on folded graphene. Through theoretical analysis and molecular dynamics simulations, we study the phonon-folding scattering effect and the dependence of thermal resistivity on the length between two folds and the overall length. Furthermore, we discuss the possibility of realizing instantaneously adjustable thermal resistors in experiment. Our studies bring new insights into designing thermal resistors and understanding the thermal modulation of 2D materials by adjusting basic structure parameters.
Publisher: Elsevier BV
Date: 03-2020
Publisher: Elsevier BV
Date: 07-2022
Publisher: Elsevier BV
Date: 03-2020
Publisher: Springer Science and Business Media LLC
Date: 08-08-2017
DOI: 10.1557/ADV.2017.506
Publisher: American Chemical Society (ACS)
Date: 09-06-2022
Publisher: AIP Publishing
Date: 16-01-2020
DOI: 10.1063/1.5141040
Abstract: Efficient separation of particles has ever-growing importance in both fundamental research and nanotechnological applications. However, such particles usually suffer from some fluctuations from external surroundings and outside intervention from unknown directions. Here, we numerically investigate the transport of Brownian particles in a straight channel with regular arrays of equilateral triangle obstacles. The particles can be rectified by the triangle obstacles under the action of an oscillating (square wave) force. At the given litude and frequency of the oscillating force, the transport is sensitively dependent on the force direction and particle size. In the cases of longitudinal and transversal oscillating force, the particles with different sizes exhibit different transport behaviors. Interestingly, under a constant force in the longitudinal direction, the phenomenon of particle separation is observed, where the particles with different radii will move in different directions. Furthermore, we also study the transport of Brownian particles driven by a tilt oscillating force. By choosing proper force directions, we can observe the gating phenomenon and transport reversal. Under different driving conditions, we can separate particles of different sizes and make them move in opposite directions.
Publisher: IOP Publishing
Date: 19-05-2016
DOI: 10.1088/0957-4484/27/26/265702
Abstract: By using non-equilibrium molecular dynamics simulations, modulating the temperature dependence of thermal conductivity of graphene phononic crystals (GPnCs) is investigated. It is found that the temperature dependence of thermal conductivity of GPnCs follows ∼T (-α) behavior. The power exponents (α) can be efficiently tuned by changing the characteristic size of GPnCs. The phonon participation ratio spectra and dispersion relation reveal that the long-range phonon modes are more affected in GPnCs with larger holes (L 0). Our results suggest that constructing GPnCs is an effective method to manipulate the temperature dependence of thermal conductivity of graphene, which would be beneficial for developing GPnC-based thermal management and signal processing devices.
Publisher: American Chemical Society (ACS)
Date: 21-07-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3TB00661A
Abstract: Rational design of tannins immobilized on various substrates and versatile applications of tannin-based composites in the biomedical and other fields.
Publisher: Elsevier BV
Date: 09-2023
Publisher: American Chemical Society (ACS)
Date: 04-05-2022
Publisher: Springer Science and Business Media LLC
Date: 19-01-2023
DOI: 10.1038/S41467-023-36018-W
Abstract: The giant thermopower of ionic thermoelectric materials has attracted great attention for waste-heat recovery technologies. However, generating cyclic power by ionic thermoelectric modules remains challenging, since the ions cannot travel across the electrode interface. Here, we reported a reversible bipolar thermopower (+20.2 mV K −1 to −10.2 mV K −1 ) of the same composite by manipulating the interactions of ions and electrodes. Meanwhile, a promising ionic thermoelectric generator was proposed to achieve cyclic power generation under a constant heat course only by switching the external electrodes that can effectively realize the alternating dominated thermodiffusion of cations and anions. It eliminates the necessity to change the thermal contact between material and heat, nor does it require re-establish the temperature differences, which can favor improving the efficiency of the ionic thermoelectrics. Furthermore, the developed micro-thermal sensors demonstrated high sensitivity and responsivity in light detecting, presenting innovative impacts on exploring next-generation ionic thermoelectric devices.
Publisher: American Chemical Society (ACS)
Date: 02-12-2019
Publisher: Elsevier BV
Date: 06-2023
Publisher: Begellhouse
Date: 2018
Publisher: Begellhouse
Date: 2018
Publisher: American Chemical Society (ACS)
Date: 12-2020
Publisher: American Chemical Society (ACS)
Date: 19-03-2020
Publisher: Springer Science and Business Media LLC
Date: 08-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8TA10500F
Abstract: A strategy to increase the efficiency of layered organic thermoelectric material is proposed by utilizing the overlap of p z orbitals.
Publisher: Elsevier BV
Date: 06-2020
Publisher: Elsevier BV
Date: 02-2018
Publisher: IOP Publishing
Date: 2021
DOI: 10.1088/0256-307X/38/1/014401
Abstract: We study the mechanism of van der Waals (vdW) interactions on phonon transport in atomic scale, which would boost developments in heat management and energy conversion. Commonly, the vdW interactions are regarded as a hindrance in phonon transport. Here we propose that the vdW confinement can enhance phonon transport. Through molecular dynamics simulations, it is realized that the vdW confinement is able to make more than two-fold enhancement on thermal conductivity of both polyethylene single chain and graphene nanoribbon. The quantitative analyses of morphology, local vdW potential energy and dynamical properties are carried out to reveal the underlying physical mechanism. It is found that the confined vdW potential barriers reduce the atomic thermal displacement magnitudes, leading to less phonon scattering and facilitating thermal transport. Our study offers a new strategy to modulate the phonon transport.
Publisher: Elsevier BV
Date: 08-2021
Publisher: Elsevier BV
Date: 11-2020
Publisher: Wiley
Date: 14-01-2019
Publisher: Elsevier BV
Date: 10-2020
Publisher: Elsevier BV
Date: 04-2023
Publisher: Wiley
Date: 27-05-2019
Publisher: Begellhouse
Date: 2018
Publisher: Elsevier BV
Date: 10-2023
Publisher: Wiley
Date: 04-01-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TC02451E
Abstract: The phonon magic angle of 2D puckered homostructures, with the TP-1 and TP-2 directions overlapped, retains a high level or even an enhanced level of phonon transport capability due to van der Waals (vdW) confinement.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2TA09068F
Abstract: Ion-molecular engineered negative-thermovoltage cellulose ionogel overcoming the trade-off mechanical strength and conductivity.
No related grants have been discovered for Meng An.