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Dual-channel mechano-phosphorescence:a combined locking effect with twisted molecular structures and robust interactions

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Light(Science & Applications) 2024年第4期13卷 738-746页

作者： Zongliang Xie Zhu Mao Hailan Wang Yuxin Xiao Xiayu Zhang Tao Yu Zhongfu An Wei Huang Frontiers Science Center for Flexible Electronics Xi’an Institute of Flexible Electronics&Xi’an Institute of Biomedical Materials and EngineeringNorthwestern Polytechnical University127 West Youyi RoadXi’an 710072China. Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518100China. Shenzhen Institutes of Advanced Electronic Materials Shenzhen 518100China. Key Laboratory of Flexible Electronics&Institute of Advanced Materials Nanjing Tech University30 South Puzhu RoadNanjing 211816China

Organic mechanoluminescence materials,featuring dual emission and ultralong phosphorescence characteristics,exhibit significant potential for applications in real-time stress sensing,pressure-sensitive lighting,advanced security marking techniques,and material breakage ***,due to immature molecular design strategies and unclear luminescence mechanisms,these materials remain rarely *** this study,we propose a valuable molecular design strategy to achieve dual-channel *** introducing the arylphosphine oxide group into a highly twisted molecular framework,enhanced intra-and intermolecular interactions could be achieved within rigid structures,leading to dual-channel mechanoluminescence with greatly promoted ultralong *** investigations reveal the substantial boosting effect of intra-and intermolecular interactions on mechanoluminescence and ultralong phosphorescence properties by locking the highly twisted molecular *** work provides a concise and guiding route to develop novel smart responsive luminescence materials for widespread applications in material science.

关键词： channel luminescence locking

Dynamic gain driven mode-locking in GHz fiber laser

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Light(Science & Applications) 2024年第11期13卷 2715-2725页

作者： Xuewen Chen Wei Lin Xu Hu Wenlong Wang Zhaoheng Liang Lin Ling Yang Yang Yuankai Guo Tao Liu Dongdan Chen Xiaoming Wei Zhongmin Yang School of Physics and Optoelectronics State Key Laboratory of Luminescent Materials and DevicesGuangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and DevicesGuangdong Provincial Key Laboratory of Fiber Laser Materials and Applied TechniquesSouth China University of TechnologyGuangzhouChina Research Institute of Future Technology South China Normal UniversityGuangzhouGuangdongChina

Ultrafast lasers have become powerful tools in various fields,and increasing their fundamental repetition rates to the gigahertz(GHz)level holds great potential for frontier scientific and industrial *** various schemes,passive mode-locking in ultrashort-cavity fiber laser is promising for generating GHz ultrashort pulses(typically solitons),for its simplicity and ***,its pulse energy is far lower than the critical value of the existing theory,leading to open questions on the mode-locking mechanism of GHz fiber ***,we study the passive mode-locking in GHz fiber lasers by exploring dynamic gain depletion and recovery(GDR)effect,and establish a theoretical model for comprehensively understanding its low-threshold mode-locking mechanism with multi-GHz fundamental repetition ***,the GDR effect yields an effective interaction force and thereby binds multi-GHz solitons to form a counterpart of soliton *** is found that the resulting collective behavior of the solitons effectively reduces the saturation energy of the gain fiber and permits orders of magnitude lower pulse energy for continuous-wave mode-locking(CWML).A new concept of quasi-single soliton defined in a strongly correlated length is also proposed to gain insight into the dynamics of soliton assembling,which enables the crossover from the present mode-locking theory to the existing ***,two distinguishing dynamics of Q-switched mode-locking that respectively exhibit rectangular-and Gaussian-shape envelopes are theoretically indicated and experimentally verified in the mode-locked GHz fiber laser through the measurements using both the standard real-time oscilloscope and emerging time-lens *** on the proposed criterion of CWML,we finally implement a GDR-mediated mode-locked fiber laser with an unprecedentedly high fundamental repetition rate of up to 21 GHz and a signal-tonoise ratio of 85.9 dB.

关键词： fiber mode locking

Coherent Beam Combining of Two Slab Laser Amplifiers and Second-Harmonic Phase locking Based on a Multi-Dithering Technique

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Chinese Physics Letters 2011年第9期28卷 155-158页

作者： LI Xiao XIAO Hu DONG Xiao-Lin MA Yan-Xing XU Xiao-Jun College of Optoelectric Science and Engineering National University of Defense TechnologyChangsha 410073

Coherent beam combining(CBC)is an efficient way to scale the brightness of laser *** demonstrate the active phase locking CBC of two slab laser amplifiers based on the multi-dithering *** experimental investigation on the 102 W coherent beam combining of two slab amplifiers shows that the whole system in a closed loop performs well over a long time *** contrast of the coherent combined beam profile is about 87%and the combining efficiency is nearly 85%.In addition,the CBC of two green lasers is realized based on the second-harmonic generation of the phase locking pump *** the best of our knowledge,this is the first report about second-harmonic active phase locking,which indicates further potential applications of CBC.

关键词： technique pump locking

Spatiotemporal mode-locking and dissipative solitons in multimode fiber lasers

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Light(Science & Applications) 2023年第11期12卷 2309-2324页

作者： Bo Cao Chenxin Gao Kewei Liu Xiaosheng Xiao Changxi Yang Chengying Bao State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentsTsinghua UniversityBeijing 100084China State Key Laboratory of Information Photonics and Optical Communications School of Electronic EngineeringBeijing University of Posts and TelecommunicationsBeijing 100876China

Multimode fiber(MMF)lasers are emerging as a remarkable testbed to study nonlinear spatiotemporal physics with potential applications spanning from high energy pulse generation,precision measurement to nonlinear *** underlying mechanism for the generation of ultrashort pulses,which can be understood as a spatiotempoal dissipative soliton(STDS),in the nonlinear multimode resonators is the spatiotemporal mode-locking(STML)with simultaneous synchronization of temporal and spatial *** this review,we first introduce the general principles of STML,with an emphasize on the STML dynamics with large intermode ***,we present the recent progress of STML,including measurement techniques for STML,exotic nonlinear dynamics of STDS,and mode field engineering in MMF *** conclude by outlining some perspectives that may advance STML in the near future.

关键词： dissipative nonlinear locking

Optical generation of tunable and narrow linewidth radio frequency signal based on mutual locking between integrated semiconductor lasers

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Photonics Research 2014年第4期2卷 11-17页

作者： Ning Zhang Xinlun Cai Siyuan Yu Department of Electrical and Electronic Engineering University of BristolBristol BS81UBUK State Key Laboratory of Optoelectronic Materials and Technology School of Physical Science and Engineering TechnologiesSun Yat-sen UniversityGuangzhou 510275China

An integrated on-chip optical device consisting of two distributed feedback(DFB)lasers and one multimode semiconductor ring laser(SRL)has been numerically *** this optical circuit,the two DFB lasers are injected into the SRL,and with the presence of the four-wave mixing effect and optical feedback,the three semiconductor lasers achieve mutual-locking *** beating between the output optical spectral lines can generate readily tunable radio frequency signals with high spectral purity.

关键词： tunable mutual locking

Volar locking distal radius plates show better short-term results than other treatment options: A prospective randomised controlled trial

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World Journal of Orthopedics 2016年第10期7卷 687-694页

作者： Herwig Drobetz Lidia Koval Patrick Weninger Ruth Luscombe Paula Jeffries Stefan Ehrendorfer Clare Heal Orthopaedic Department Mackay Base Hospital James Cook University School of Medicine and Dentistry Orthopaedic Department the Prince Charles Hospital Orthopaedic Hospital Speising Mathematical Science School Queensland University of Technology Orthopaedic Department Kantons Hospital Uri Department of General Practice Mackay Base Hospital James Cook University School of Medicine and Dentistry Anton Breinl Research Centre for Health Systems Strengthening James Cook University

AIM To compare the outcomes of displaced distal radius fractures treated with volar locking plates and with immediate postoperative mobilisation with the outcomes of these fractures treated with modalities that necessitate 6 wk wrist *** A prospective, randomised controlled single-centre trial was conducted with 56 patients who had a displaced radius fracture were randomised to treatment either with a volar locking plate(n = 29), or another treatment modality(n = 27; cast immobilisation with or without wires or external fixator). Outcomes were measured at 12 wk. Functional outcome scores measured were the Patient-Rated Wrist Evaluation(PRWE) Score; Disabilities of the Arm, Shoulder and Hand and activities of daily living(ADLs). Clinical outcomes were wrist range of motion and grip strength. Radiographic parameters were volar inclination and ulnar *** Patients in the volar locking plate group had significantly better PRWE scores, ADL scores, grip strength and range of extension at three months compared with the control group. All radiological parameters were significantly better in the volar locking plate group at 3 mo. CONCLUSION The present study suggests that volar locking plates produced significantly better functional and clinical outcomes at 3 mo compared with other treatment modalities. Anatomical reduction was significantly more likely to be preserved in the plating group. Level of evidence: Ⅱ.

关键词： Volar locking distal radius plate Prospective randomised controlled Postoperative mobilisation Distal radius fracture Short-term outcome

Four corner fusion using a multidirectional angular stable locking plate

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World Journal of Orthopedics 2016年第8期7卷 501-506页

作者： Tahseen Chaudhry Michelle Spiteri Dominic Power Mark Brewster Department of Hand Surgery Queen Elizabeth Hospital

AIM: To review the results of our experience with the Medartis Aptus plating system for four corner arthrodesis of the wrist, which uses a combination of compression screws and variable angle locking ***: We reviewed the results of 17 procedures in 16 patients that underwent scaphoid excision and four corner fusion using the Medartis Aptus system between May 2010 and June 2014. The primary outcome measure was radiographic and clinical union. RESULTS: The mean clinical follow up time was 20.6 mo. The mean union time was 6 mo. Two non-unions required revision procedures. The mean disabilities of the arm, shoulder and hand score taken after union was 36. The mean final grip strength was 27 kg. The mean final range of movement was 30° flexion and 31° of extension. All patients had a restored scapholunate angle on postoperative radiographs. There were no incidences of dorsal ***: Overall our experience with the Aptus plating system shows comparable results to other methods of fixation for four corner fusion, in the short to medium term.

关键词： Wrist surgery Arthrodesis locking plate Scaphoidectomy Partial fusion

Triggering,clicking,locking and crepitus of the finger:A comprehensive overview

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World Journal of Orthopedics 2023年第10期14卷 733-740页

作者： Pieter W Jordaan Raymond Klumpp Marco Zeppieri Department of Orthopaedic Garden Route Hand UnitGeorge 6530South Africa UOC Ortopedia e Traumatologia Ospedale Treviglio-Caravaggio ASSTBergamo Ovest 24047Italy Department of Ophthalmology University Hospital of UdineUdine 33100Italy

Triggering,locking,clicking,and crepitus of the fingers are common symptoms patients present *** though crepitus and triggering can occur as part of the same underlying diagnosis,it is important to differentiate between them,as they usually indicate different possible *** differential diagnoses that should be considered include trigger finger,metacarpophalangeal joint(MCPJ)arthritis,fractures or dislocations,extensor digitorum communis subluxation or dislocation,locked MCPJ,avascular necrosis of the metacarpal head,and Dupuytren’s disease.A thorough clinical examination with appropriate special investigations can permit the clinician to make the correct *** management of a confirmed diagnosis is successful in providing symptomatic improvement.

关键词： Trigger finger locking Crepitus Metacarpophalangeal joint Dislocation Differential diagnosis

PHASE AND FREQUENCY locking OF MICROWAVE AND MILLIMETER WAVE POWER COMBINING

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Journal of Electronics(China) 1994年第4期11卷 361-368页

作者：谢文楷刘盛纲 University of Electronic Science and Technology of China Chengdu 610054

The phase and frequency locking of microwave, millimeter wave power combining were analysed and summarized in an all-round way. The master/slave phase locking of cavity oscillators, the peer phase locking of mutually coupled oscillators, and the peer phase locking of ring-connected multiple oscillators were investigated. The results of numerical calculations, and the relations of phase to phase locking model and oscillator parameters were given. And the cavity and space power combining aspects for microwave and millimeter wave were presented.

关键词： Power combining Phase locking Frequency locking Master/slave phase locking Peer couple phase locking Solid-state source Relativistic microwave device