Results 71 to 80 of about 23,679 (213)

Unsteady flow mechanisms in the last stage of a transonic low pressure steam turbine - multistage effects and tip leakage flows

Journal of the Global Power and Propulsion Society, 2017
In this paper, an unsteady investigation of the last two stages of a low-pressure steam turbine with supersonic airfoils near the tip of the last stage’s rotor blade is presented.
Ilias Papagiannis, Asad Raheen, Altug Basol, Anestis Kalfas, Reza Abhari, Hisataka Fukushima, Shigeki Senoo   +6 more
doaj   +1 more source

2D Abrupt Nano‐Junctions Blending sp–sp2 Bonds on Atomically Precise Heterostructures

Advanced Materials, EarlyView.
A lateral heterostructure between atomically precise sp–sp2$^2$ metalated graphdiyne and sp2$^2$ graphene nanoribbons is realized by on‐surface synthesis and investigated by STM and DFT. The impact of on‐surface synthesis byproducts on covalent junction formation yield is unveiled.
Alice Cartoceti, Simona Achilli, Masoumeh Alihosseini, Adriana E. Candia, Enrico Beltrami, Paolo D'Agosta, Alessio Orbelli Biroli, Francesco Sedona, Andrea Li Bassi, Jorge Lobo‐Checa, Carlo S. Casari   +10 more
wiley   +1 more source

Advanced Materials for Biologics Delivery to Brain Tumors

Advanced Materials, EarlyView.
Material innovation is central to unlocking the therapeutic potential of biologics against many central nervous system diseases, including brain cancer. By engineering carriers with controlled transport, targeting, and release properties, advanced materials can overcome the blood–brain barrier and tumor microenvironment, improving the delivery of ...
Yuran Feng, Yuxue Cao, Maria Kavallaris, Taskeen Janjua, Amirali Popat   +4 more
wiley   +1 more source

Aerodynamic performance optimization and unsteady flow field stability analysis of a supercritical carbon dioxide centrifugal compressor with non-uniform blade tip clearance [PDF]

AIP Advances
Tip leakage flow is a critical factor constraining the efficiency and stability of supercritical carbon dioxide (SCO2) centrifugal compressors. To address this challenge, this study proposes a non-uniform blade tip clearance design and establishes a ...
Zhengjing Shen, Liuhao Liu, Jiangbo Wu, Senchun Miao, Xiaoze Du   +4 more
doaj   +1 more source

Volatile Memristive Devices With Tunable Temporal Dynamics For Event‐Based Sensing

Advanced Materials, EarlyView.
Tunable volatile memristive devices can serve various neural‐inspired tasks that require different time windows of information retention. The ionic‐based volatility of the presented Pt/a‐STO/TaOx/Ta device stack can be reproducibly and controllably tuned in multiple ways.
Dimitrios Spithouris, Johannes Hellwig, Hugh Greatorex, Clemens Wittberg, Panagiotis Koutsogiannis, César Magén, Elisabetta Chicca, Regina Dittmann   +7 more
wiley   +1 more source

Poly(Alkoxythiophene) Rod‐Coil Block Copolymers for Organic Electrochemical Transistors

Advanced Materials, EarlyView.
We present the first synthesis of poly(3‐alkoxythiophene) rod‐coil block copolymers as a new architecture for OMIECs. Incorporating PEG and PLLA coils can enhance device performance beyond the homopolymer. The figure‐of‐merit depends uniquely on coil length.
Junfu Tian, Wentao Shan, Rachael Found, Paola Mantegazza, Francesco Leoni, Andreas W. Erhardt, Yuyun Yao, Matus Stredansky, Arianna Magni, Adam Marks, Elena Chulanova, Zeinab Hamid, Yueying Huang, Wanpeng Lu, Xian'e Li, Baopu Zhang, Qingpei Wan, Christina Kousseff, Matilde Concilio, Ruth Theresia Arwani, Caroline A. Ross, Sahika Inal, Giovanni Costantini, Iain McCulloch   +23 more
wiley   +1 more source

Transient Vortex Dynamics in Tip Clearance Flow of a Novel Dishwasher Pump

Machines
Blade tip leakage vortex (TLV) is a critical phenomenon in hydraulic machinery, which can significantly affect the internal flow characteristics and deteriorate the hydraulic performance.
Chao Ning, Yalin Li, Haichao Sun, Yue Wang, Fan Meng   +4 more
doaj   +1 more source

Lithography‐Compatible Conductive Metal–Organic Frameworks for Scalable Electronics

Advanced Materials, EarlyView.
Conductive MOF thin films are integrated as gate electrodes in semiconductor devices through a photolithography‐compatible patterning strategy. CVD‐grown 2D MOF thin films enable stable operation across bottom‐gate MoS2/MoTe2 field‐effect transistors and top‐gate IGZO arrays, highlighting the potential of conductive MOFs as functional electronic ...
Hyeonwoo Lee, Han Joo Lee, Myeonggeun Choe, Jeehong Park, Yeonjin Yi, Seongil Im, Suk Hyun Park, Hee Cheul Choi, Ji Hoon Park, Sarah S. Park   +9 more
wiley   +1 more source

Study on Steam Excitation Forces Induced by Tip Seal Leakage Flow in Steam Turbines

Machines
This study aims to elucidate the mechanisms by which tip seal leakage flow induces steam excitation, thereby enhancing the operational safety of steam turbines.
Pan Li, Huan Wang, Haichao Peng, Heyong Si, Tieliu Jiang   +4 more
doaj   +1 more source

Vine-Inspired Soft Robotics: Materials, Actuations, and Emerging Applications. [PDF]

Adv Sci (Weinh)
Vine‐inspired robots grow from the tip, enabling navigation through confined spaces with minimal disturbance. This Review summarizes material and actuation strategies for vine‐inspired growth, key functions including steering, retraction, attachment, branching, and variable stiffness, and emerging applications spanning medical intervention, confined ...
Wu J, Liu X, Wang F, Ren H, Zhang C, Ren Z, Liu Z, Li J.   +7 more
europepmc   +2 more sources