Results 51 to 60 of about 13,916 (292)

Study of wavelength switching time in tunable semiconductor micro-ring lasers: experiment and travelling wave description [PDF]

, 2018
We report in this paper the wavelength switching features of semiconductor ring lasers that are wavelength tunable based on filtered optical feedback.
Khoder, Mulham, Tronciu, Vasile, Verschaffelt, Guy, Radziunas, Mindaugas   +3 more
core   +1 more source

The Role of Ultra‐Thin Buffer Layers for Achieving Ultra‐Low Dark Currents in Single‐Component Organic Photodetectors

Advanced Functional Materials, EarlyView.
Here, SubNc single‐component organic photodiodes (SC‐OPDs) are investigated, which achieve highly competitive performance metrics, including high EQE, ultra‐low JD, and high specific detectivity (D*). This study emphasizes the critical role of an organic buffer layer in studying the interface energetics and effects to achieve state‐of‐the‐art ...
Anncharlott Kusber, Ying Sun, Jakob Wolansky, Louis Conrad Winkler, Anna‐Lena Hofmann, Fred Kretschmer, Hrisheekesh Thachoth Chandran, Tianyi Zhang, Mike Hambsch, Stefan C. B. Mannsfeld, Karl Leo, Ji‐Seon Kim, Johannes Benduhn   +12 more
wiley   +1 more source

Ultra-Broadband Optical Filter Based on Step-Chirped Multimode Waveguide Bragg Grating

IEEE Photonics Journal
An ultra-broadband optical filter based on step-chirped multimode waveguide Bragg grating (SCMWBG) with low insertion loss, high sidelobe suppression ratio (SLSR), compact size and relaxed fabrication accuracy is demonstrated on SOI platform. The grating
Nannan Ning, Qiang Zhang, Zhujun Wei, Qikai Huang, Penghui Xia, Yuehai Wang, Jianyi Yang, Hui Yu   +7 more
doaj   +1 more source

Unlocking Multi‐Valley Energy Pockets and Interface‐Induced Phonon Filtering in InSb Thermoelectrics by Reaction‐Driven Interface Engineering

Advanced Functional Materials, EarlyView.
InSb, a narrow‐bandgap semiconductor with high carrier mobility, is promising for thermoelectric energy conversion but suffers from high lattice thermal conductivity and strong bipolar conduction. Here, in situ interface engineering using Co2O3 nanoprecursors forms hierarchical CoSbx/In2O3/CoSb3 heterostructures that enhance phonon scattering and ...
Jiwu Xin, Xiao Yang, Xiao‐Lei Shi, Chengyun Xu, Xi Ling, Pengyu Zhang, Jinfeng Dong, Yong Du, Haisheng Chen, Ting Zhang, Zhi‐Gang Chen   +10 more
wiley   +1 more source

Light‐Actuated Fiber‐Climbing Inchworm Robot Toward Endoluminal Navigation

Advanced Functional Materials, EarlyView.
A kirigami‐inspired soft inchworm robot harnesses optical energy from a customized side‐emitting optical fiber, guaranteeing its propulsion along the fiber body. The wavelength‐selective responsiveness of dye‐functionalized liquid crystal elastomers and the application of temporal illumination patterns enable sequential control of robot components. The
Antonio Lobosco, Leilei Song, Fan Liu, Yu‐Hsiang Lin, Venkatasubramanian Kalpathy Venkiteswaran, Hao Zeng, Sarthak Misra   +6 more
wiley   +1 more source

Tailoring the transmission of liquid-core waveguides for wavelength filtering on a chip

, 2007
The combination of integrated optics and microfluidics in planar optofluidic devices carries the potential for novel compact and ultra-sensitive detection in liquid and gaseous media.
Measor, P., Yin, D., D. Yin, V. Sandoghdar, P. Measor, H. Schmidt, Lunt, E., E. Lunt, A. R. Hawkins, Sandoghdar, V., Hakanson, U., U. Hakanson, Hawkins, A., Schmidt, H.   +13 more
core   +1 more source

Broadband Three-Mode Tunable Metamaterials Based on Graphene and Vanadium Oxide

Nanomaterials
Terahertz waves have great potential for applications in security imaging, wireless communication, and other fields, but efficient and tunable terahertz-absorbing devices are the key to their technological development.
Hao Wen, Shouwei Wang, Yiyang Cai, Zhuochen Zou, Zheng Qin, Tianyu Gao   +5 more
doaj   +1 more source

Dynamically Tunable Electromagnetically Induced Transparency in Graphene-Based Coupled Micro-ring Resonators

IEEE Photonics Journal, 2017
A dynamically tunable electromagnetically induced transparency (EIT) system consisting of two coupled micro-ring resonators, one of which is embedded with a graphene layer, is proposed and numerically demonstrated.
Xuetong Zhou, Tian Zhang, Xiang Yin, Lin Chen, Xun Li   +4 more
doaj   +1 more source

Coating Artificial Spider Silk Fiber with Magnetic FeCo: An Effective Strategy for Creating a Flexible Magneto‐Responsive Material

Advanced Functional Materials, EarlyView.
An original method is presented for producing artificial spider silk fibers with magnetic and magnetomechanical responsiveness, which consists in coating them with a nanometer‐thick layer of FeCo alloy by sputtering deposition. The challenge of combining organic materials and inorganic magnetic nanostructures is addressed, thus taking a step forward ...
Filippo Lanaro, Federico Spizzo, Gabriele Greco, Benjamin Schmuck, Anna Rising, Lucia Del Bianco   +5 more
wiley   +1 more source

Solution‐Processed Two‐Dimensional Indium Oxide on Sodium‐Embedded Alumina for Reconfigurable Optoelectronic Synaptic Transistors

Advanced Functional Materials, EarlyView.
Wafer‐scale two‐dimensioanl In2Se3 oxidized into InOx on sodium‐embedded beta‐alumina enables multifunctional reconfigurable electronics. Sodium ions accumulate within distinct spatial distribution under drain‐controlle and gate‐controlled operation. Drain‐control operation gives controllability of ultraviolet‐driven optoelectronic synaptic conductance
Jinhong Min, Yonghyun Albert Kwon, Hyunbin Kim, Jihyun Kim, Myeongjin Jung, Jaewon Heo, Gwang Ya Kim, Vlastimil Mazanek, Zdeněk Sofer, In Soo Kim, Jeong Ho Cho, Hyesung Park, Sang Min Won, Joohoon Kang   +13 more
wiley   +1 more source