Results 181 to 190 of about 7,440 (224)
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Light-driven upconversion fluorescence micromotors
Biosensors and Bioelectronics, 2022Light-driven micromotors with high spatial resolution are powerful tools for targeted drug delivery and biomedical diagnosis. To combine the function of biosensing, light-driven micromotors have been modified with fluorescence materials such as quantum dots or dyes. However, these fluorescence micromotors are generally driven and excited by ultraviolet
Yanan Zhao +7 more
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Pollutant-degrading multifunctional micromotors
2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems (NEMS), 2017This paper reports a novel fabrication technique to create pollutant-degrading, self-propelled, micro soft-robots whose surface is decorated with the high surface-area, photocatalytic ZnO nanowire array. Micromotors/microrobots with photodegradation capabilities have been reported [1], but their form is limited to spherical particles with some ...
Yaozhong Zhang, Junghoon Yeom
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Electrostatic micromotor and its reliability
Microelectronics Reliability, 2005Abstract Research and development in microelectromechanical systems (MEMS) have made remarkable progress since the advent of the first electrostatic micromotor in 1987. Considerable efforts have been directed to the investigation of the failure mechanisms and reliability of electrostatic micromotors.
Wenming Zhang, Guang Meng, Hongguang Li
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Nanoparticle mediated micromotor motion
Nanoscale, 2015In this paper, we report the utilization of nanoparticles to mediate the motion of a polymer single crystal catalytic micromotor. Micromotors have been fabricated by directly self-assembling functional nanoparticles (platinum and iron oxide nanoparticles) onto one or both sides of two-dimensional polymer single crystals.
Mei, Liu +8 more
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Non-oscillatory micromotors “learn” to oscillate on-the-fly from oscillating Ag micromotors
Chemical Communications, 2020Oscillating Ag-containing micromotors release silver ions that diffuse and deposit on the surface of Au–Rh microrods, which then learn to oscillate individually or collectively as a wave.
Chao Zhou +3 more
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Tadpole-like artificial micromotor
Nanoscale, 2015We describe a polymer-based artificial tadpole-like micromotor, which is fabricated through the electrospinning technique. By incorporating functional materials onto its surface or within its body, the resulting tadpole-like micromotor can not only move autonomously in an aqueous solution with a flexible tail, but also exhibit thermo- and magnetic ...
Limei, Liu +8 more
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ACS Applied Materials & Interfaces, 2019
Light-powered wireless manipulation of small objects in fluids has been of interest for biomedical and environmental applications. Although many techniques employing UV-vis-NIR light sources have been devised, new methods that hold greater penetrating power deep into medium are still in demand. Here, we develop a method to exploit X-rays to propel half-
Zhaoyi Xu +6 more
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Light-powered wireless manipulation of small objects in fluids has been of interest for biomedical and environmental applications. Although many techniques employing UV-vis-NIR light sources have been devised, new methods that hold greater penetrating power deep into medium are still in demand. Here, we develop a method to exploit X-rays to propel half-
Zhaoyi Xu +6 more
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ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels, 2008
A novel concept of a micromotor is presented. The idea of this micromotor is to transform the vibrational energy into rotational mechanical energy in a simple way. The principle of operation of this motor is not the same as the ultrasonic motor. The vibrational energy can be a direct mechanical or acoustical energy.
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A novel concept of a micromotor is presented. The idea of this micromotor is to transform the vibrational energy into rotational mechanical energy in a simple way. The principle of operation of this motor is not the same as the ultrasonic motor. The vibrational energy can be a direct mechanical or acoustical energy.
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Micromotor‐Based Energy Generation
Angewandte Chemie International Edition, 2015AbstractA micromotor‐based strategy for energy generation, utilizing the conversion of liquid‐phase hydrogen to usable hydrogen gas (H2), is described. The new motion‐based H2‐generation concept relies on the movement of Pt‐black/Ti Janus microparticle motors in a solution of sodium borohydride (NaBH4) fuel.
Virendra V, Singh +3 more
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Micromotor grating optical switch
Optics Letters, 1995We describe polysilicon micromotors with diffraction gratings fabricated on the polished surface of the polysilicon rotor for optical switching applications. The motors have rotor diameters of 0.5–2 mm with grating elements having periods of 1.80 and 3.86 μm. These microswitches have rise times of 300 μs and settling times of 500 μs when driven by a 65-
S W, Smith +3 more
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