Results 281 to 290 of about 550,548 (338)

High‐Speed and Scalable Wet Spinning of Graphene/Liquid Crystalline Elastomer Composite Filaments

Advanced Functional Materials, EarlyView.
Polydomain filaments from graphene/liquid crystalline elastomer (LCE) composites are scalably‐manufactured by wet spinning across a wide range of diameters (≈137–1128 µm) at a speed up to 4500 m h−1 through a double diffusion coagulation mechanism, enabling fast actuation and optimized mechanical performance for broad applications.
Antonio Proctor Martinez, Lucy K. Decker, Kunyu Wang, Jong Bin Kim, Christopher B. Murray, Shu Yang   +5 more
wiley   +1 more source

Tin‐Based 2D/3D Perovskite Vertical Heterojunction for High‐Performance Synaptic Phototransistors

Advanced Functional Materials, EarlyView.
Phototransistors based on tin‐based 2D/3D perovskite heterostructures show an ultrahigh responsivity and detectivity at a low gate voltage across a broad wavelength region from ultraviolet to near‐infrared. The devices can replicate neuromorphic learning and remembering behaviors to light stimuli, in addition to electric depression and memory erasure ...
Hok‐Leung Loi, Tianyue Wang, Dapeng Liu, Jiupeng Cao, Jing Zhuang, Zeyu Zhao, Yang Xu, Mitch Guijun Li, Liang Li, Tianyou Zhai, Feng Yan   +10 more
wiley   +1 more source

Improving the Capacity Retention of Poly(vinylphenothiazine) as Battery Electrode Material by Pore Size Engineering of Porous N‐Doped Carbon Nanospheres as Conductive Additive

Advanced Functional Materials, EarlyView.
By using (meso)porous N‐doped carbon nanospheres with tailored intraparticle porosity and constant particle size as conductive carbon in PVMPT‐based organic battery electrodes, the complete volume of the carbon is accessible for the immobilization of PVMPT, resulting in high accessible specific capacities while maintaining a good rate capability and ...
Niklas Ortlieb, Bärbel Tengen, Verena Perner, Martin Winter, Birgit Esser, Peter Bieker, Anna Fischer   +6 more
wiley   +1 more source

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Autoradiography in the Scanning Electron Microscope

Nature, 1970
THE results of electron microscopic examination of the structure of solids often need to be supplemented by tracing the chemical processes leading to particular structural features. This can be achieved by using radioisotopes, the distribution of which in the specimen can be determined well by autoradiography.
D. Paul, A. Gröbe, F. Zimmer
openaire   +3 more sources

Scanning tunneling microscope combined with a scanning electron microscope

Review of Scientific Instruments, 1986
We have developed a small scanning tunneling microscope (STM) to be incorporated into a scanning electron microscope (SEM). Vibration isolation and damping is achieved solely with Viton dampers. As a stand-alone unit, a tunnel-gap stability of about 1 Å is reached at atmospheric air pressure without additional sound protection. Stability improves by at
Ch. Gerber, Heinrich Rohrer, H. Fechs, Othmar Marti, G. Binnig   +4 more
openaire   +3 more sources

The Scanning Electron Microscope [PDF]

, 2005
As we discussed in Chapter 1, the scanning electron microscope (SEM) was invented soon after the TEM but took longer to be developed into a practical tool for scientific research. As happened with the TEM, the spatial resolution of the instrument improved after magnetic lenses were substituted for electrostatic ones and after a stigmator was added to ...
openaire   +1 more source

Scanning tunneling microscope combined with scanning electron microscope

Ultramicroscopy, 1987
Abstract A scanning tunneling microscope (STM) has been installed in a usual scanning electron microscope (SEM) with a vacuum of 10−6 Torr. The STM image is displayed on the cathode ray tube of the SEM, 512 × 512 pixels, with a scanning rate of 80 s/picture.
Takeo Ichinokawa, Y. Miyazaki, Y. Koga
openaire   +2 more sources

Combination of a scanning tunneling microscope with a scanning electron microscope

Review of Scientific Instruments, 1988
We have placed a scanning tunneling microscope (STM) in the sample stage of a scanning electron microscope (SEM). This allows us to focus the tip on a preselected spot for STM operation with a precision of 0.5 μm. We are able to check the state of the sample and the tip during STM operation by simultaneous use of the SEM.
A. Bartolomé, A. M. Baró, Ricardo Garcia, Luis Vázquez, A. Buendía   +4 more
openaire   +2 more sources

Scan nonlinearity of a scanning electron microscope

Measurement Techniques, 2012
The scan nonlinearity of scanning electron microscopes is estimated with the use of a relief element with known geometric form of the profile. The mean value of the step of the test relief structure, which is determined as a test sample is moved along the scanning axis X, is measured.
A. Yu. Kuzin, A. V. Rakov, V. P. Gavrilenko, V. V. Alzoba, P. A. Todua, M. N. Filippov, V. B. Mityukhlyaev   +6 more
openaire   +2 more sources

The scanning electron microscope

IEEE Spectrum, 1967
The scanning electron microscope combines the techniques of the cathode-ray tube and the conventional electron microscope?both considered indispensable to modern technology. The SEM, which presents a picture having a distinct three-dimensional appearance, is finding application in the examination of wood fibers in connection with paper manufacture, of ...
openaire   +2 more sources