Liangliang Chen

ORCID: 0000-0002-9594-640X
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About
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Research Areas
  • Organic Electronics and Photovoltaics
  • Advanced Battery Technologies Research
  • Magnetic Bearings and Levitation Dynamics
  • Conducting polymers and applications
  • Distributed Control Multi-Agent Systems
  • Adaptive Control of Nonlinear Systems
  • Extraction and Separation Processes
  • Advancements in Battery Materials
  • Perovskite Materials and Applications
  • Microgrid Control and Optimization
  • Asphalt Pavement Performance Evaluation
  • Electric Vehicles and Infrastructure
  • Building Energy and Comfort Optimization
  • Concrete and Cement Materials Research
  • Advanced DC-DC Converters
  • Topic Modeling
  • Advanced Memory and Neural Computing
  • Piezoelectric Actuators and Control
  • Force Microscopy Techniques and Applications
  • Robot Manipulation and Learning
  • CCD and CMOS Imaging Sensors
  • Electric Motor Design and Analysis
  • Advanced Battery Materials and Technologies
  • Chalcogenide Semiconductor Thin Films
  • Electric and Hybrid Vehicle Technologies

Xi'an University of Technology
2025

Nanjing Normal University
2025

Wuhan Institute of Technology
2023-2025

Chinese Academy of Sciences
2019-2024

Beijing National Laboratory for Molecular Sciences
2019-2024

Institute of Chemistry
2019-2024

Zhejiang University
2009-2024

Georgia Institute of Technology
2021-2024

University of California, Los Angeles
2024

Nanchang Hangkong University
2017-2024

Research on organic solar cells (OSCs) has progressed through material innovation and device engineering. However, well-known ubiquitous intermolecular interactions, particularly their synergistic effects, have received little attention. Herein, the complicated relationship between photovoltaic conversion multidimensional interactions in active layers is investigated. These are dually regulated by side-chain isomerization end-cap engineering of acceptors. The phenylalkyl featured acceptors...

10.1002/adma.202208986 article EN Advanced Materials 2022-12-16

Intrinsically stretchable polymer semiconductors are highly demanding for flexible electronics. However, it still remains challenging to achieve synergy between intrinsic stretchability and charge transport property properly semiconductors. In this paper, terpolymers reported as intrinsically polymeric with good ductility high mobility simultaneously by incorporation of non-centrosymmetric spiro[cycloalkane-1,9'-fluorene] (spiro-fluorene) units into the backbone diketopyrrolopyrrole (DPP)...

10.1002/adma.202209896 article EN Advanced Materials 2023-02-11

Pincer-shaped non-covalent bond interactions are introduced between a small-molecule additive and polymer acceptor, effectively improving the photovoltaic performance mechanical stability of all-polymer solar cells.

10.1039/d4ee01117a article EN Energy & Environmental Science 2024-01-01

Abstract Polycyclic aromatic hydrocarbons with hexagons/pentagons or hexagons/heptagons have been intensively investigated in recent years, but those simultaneous presence of hexagons, pentagons and heptagons remain rare. In this paper, we report dicyclohepta[ ijkl , uvwx ]rubicene ( DHR ), a non‐benzenoid isomer dibenzo[ bc kl ]coronene two heptagons. We developed an efficient scalable synthetic method for by using Scholl reaction dehydrogenation. Crystal structure shows that the benzenoid...

10.1002/anie.201914416 article EN Angewandte Chemie International Edition 2019-12-21

In active magnetic bearing-rotor systems, unbalance compensation is used to force the rotor spin around its geometric axis for better rotary precision. A method, which produces control signal according real-time position of rotor's mass, proposed actualize compensation. Unlike force, mass' magnitude and are inherent property independent speed. While speed varying, mass needs not be recalculated continuously frequently. It will significantly reduce computational cost. Additionally, seeking...

10.1109/tie.2015.2405893 article EN IEEE Transactions on Industrial Electronics 2015-02-24

Abstract The AlO x -based resistive switching memory device is fabricated by an oxidation diffusion process that involves depositing Al film on ITO substrate and annealing at 400 °C in a vacuum. An interface layer with thickness of ~ 20 nm formed as resistance layer. Bipolar unipolar (RS) behaviours are obtained when the compliance current limited (≥ 1 mA). In RS behaviour, devices fail to perform set/reset cycles low temperature (40 K), which suggests Joule heating essential for behaviour....

10.1186/s11671-019-3229-y article EN cc-by Nanoscale Research Letters 2020-01-15

To clearly show how important the impact of side chains on organic solar cells (OSCs) is, we designed three acceptors IDIC-C

10.1016/j.xinn.2021.100090 article EN cc-by-nc-nd The Innovation 2021-02-01

10.1016/j.resconrec.2022.106312 article EN Resources Conservation and Recycling 2022-04-29

Abstract Diketopyrrolopyrrole (DPP) as a building block has been intensively investigated for organic semiconductors and light emitting materials. The synthesis of N ‐aryl DPPs remains challenging. Herein, we firstly report new easily handled synthetic method toward through H‐DPP with diaryliodonium salt in the presence CuI, which shows broad reaction scope. Sixteen DPPs, including phenyl, furan thiophene flanking aromatic groups, were synthesized yields up to 78 %. These are fluorescent...

10.1002/anie.202102131 article EN Angewandte Chemie International Edition 2021-02-26

Abstract A diazirine‐based four‐armed cross‐linker ( 4CNN ) with a tetrahedron geometry is presented for efficient patterning of polymeric semiconductors by photo‐induced carbene insertion. After blending no more than 3 % (w/w), photo‐patterning p‐, n‐, and ambipolar semiconducting polymers side alkyl chains was achieved; regular patterns size as small 5 μm were prepared appropriate photomasks after 365 nm irradiation just 40 s. The interchain packing order the thin film morphology nearly...

10.1002/anie.202108421 article EN Angewandte Chemie International Edition 2021-08-04

Massive false rumors emerging along with breaking news or trending topics severely hinder the truth. Existing rumor detection approaches achieve promising performance on yesterday's news, since there is enough corpus collected from same domain for model training. However, they are poor at detecting about unforeseen events especially those propagated in minority languages due to lack of training data and prior knowledge (i.e., low-resource regimes). In this paper, we propose an adversarial...

10.18653/v1/2022.findings-naacl.194 article EN cc-by Findings of the Association for Computational Linguistics: NAACL 2022 2022-01-01

Due to the low content of silicon and aluminum in red mud reaction activity mud, when it was used prepare composite cementitious materials, necessary assist other aluminosilicates improve their by certain methods. In this study, proposed add slag increase percentage system, reactivity system through activation effect sulfate phosphogypsum. The effects phosphogypsum contents on mechanical properties microstructures materials were studied. X-ray diffraction analysis (XRD), thermogravimetric...

10.3390/ma15176096 article EN Materials 2022-09-02

Atomic force microscope (AFM) has been defined as the one of most powerful instruments to explore micro/nanoworld in various fields. To lower imaging noise, AFMs are commonly equipped with open-loop nanopositioners (scanners). However, hysteretic effect AFM positioners is a dominate factor that increases position error during AFM-based manipulations. reduce hysteresis, inverse compensation approach an effective solution. Normally, compensator designed for manipulation task maximum working...

10.1109/tie.2017.2677300 article EN IEEE Transactions on Industrial Electronics 2017-03-02

Adverse road condition is the main cause of traffic accidents. Road surface recognition based on video image has become a central issue. However, hybrid and under different lighting environments are two crucial problems. In this paper, states categorized into 5 types including dry, wet, snow, ice, water. Then, according to original size, images segmented; 9-dimensional color eigenvectors 4 texture extracted construct state characteristics database. Next, method SVM (Support Vector Machine)...

10.1155/2017/6458495 article EN cc-by Journal of Advanced Transportation 2017-01-01

Abstract Promoted by uninterrupted materials and device innovation, organic solar cells have achieved impressive development. However, the complicated intermolecular interactions inside active layers are less understood. Herein, studied from dual perspectives of acceptor/acceptor (A/A) donor/acceptor (D/A), how these synergistically control final efficiencies. Three small molecular acceptors (SMAs) designed with different end‐caps, which manipulate crystallinity electrostatic potential (ESP)...

10.1002/adfm.202107026 article EN Advanced Functional Materials 2021-09-04

Rumors are rampant in the era of social media. Conversation structures provide valuable clues to differentiate between real and fake claims. However, existing rumor detection methods either limited strict relation user responses or oversimplify conversation structure. In this study, substantially reinforces interaction opinions while alleviating negative impact imposed by irrelevant posts, we first represent thread as an undirected graph. We then present a Claim-guided Hierarchical Graph...

10.18653/v1/2021.emnlp-main.786 article EN cc-by Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing 2021-01-01

This article proposes a novel learning-based control strategy, named MBRL-MC, for the heating, ventilation, and air conditioning (HVAC) system by combining model-based deep reinforcement learning (DRL) model predictive (MPC). First, thermal dynamic of zone is learned supervised algorithm. Based on model, neural network (NN) planning framework designed which leverages ideas both (RL) MPC. The proposed algorithm directly obtained without imitating results MPC random shooting, avoids...

10.1109/jiot.2022.3164023 article EN publisher-specific-oa IEEE Internet of Things Journal 2022-04-01

BAF complexes are composed of different subunits with varying functional and developmental roles, although many have not been examined in depth. Here we show that the Baf45 subunit Dpf2 maintains pluripotency ESC differentiation potential. co-occupies enhancers Oct4, Sox2, p300, Brg1, deleting perturbs self-renewal, induces repression Tbx3, impairs mesendodermal without dramatically altering Brg1 localization. Mesendodermal can be rescued by restoring Tbx3 expression, whose distal enhancer...

10.1016/j.stem.2018.12.001 article EN cc-by Cell stem cell 2019-01-01

Abstract A new design strategy for photoresponsive semiconducting polymer with tri‐stable states is reported by simultaneous incorporation of tetra ‐ ortho ‐methoxy‐substituted azobenzene (mAzo) and arylazopyrazole (pAzo) in the side chains. The trans‐ to ‐cis transformations mAzo pAzo groups can sequentially occur within thin film after sequential 560 365 nm light irradiation. Remarkably, trans–cis isomerization modulate crystallinity. Accordingly, performances resulting field‐effect...

10.1002/adma.202005613 article EN Advanced Materials 2021-01-14

Reinforcement learning (RL) methods can be used to develop a controller for the heating, ventilation, and air conditioning (HVAC) systems that both saves energy ensures high occupants' thermal comfort levels. However, existing works typically require on-policy data train an RL agent, personalized preferences are not considered, which is limited in real-world scenarios. This paper designs high-performance model-based offline algorithm HVAC systems. The proposed quickly adapt different with...

10.1109/tsusc.2023.3251302 article EN IEEE Transactions on Sustainable Computing 2023-03-01

In particle physics, it is needed to evaluate the possibility that excesses of events in mass spectra are due statistical fluctuations as quantified by standards local and global significances. Without prior knowledge a particle’s mass, especially critical estimate its significance. The usual approach count number times significance limit exceeded collection simulated Monte Carlo (MC) “toy experiments”. To demonstrate this conventional method for significance, we performed simulation studies...

10.3390/sym17010057 article EN cc-by Symmetry 2025-01-01
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