Results 211 to 220 of about 216,890 (260)

External Reflection From Two‐Photon Laser‐Printed Micromirrors Enables Photomechanical Actuation at a 90° Incident Angle

Advanced Functional Materials, EarlyView.
Light reflectance increases along incidence angle and transmittance significantly drops around 90‐degree incidence angle. Here, we report two‐photon laser printed micro mirrors that redirect the skimming light beam into normal light absorption. Using this technique, light‐driven micro walkers and grippers are demonstrated by using grazing incidence ...
Leilei Song, Jianfeng Yang, Hao Zeng
wiley   +1 more source

Biointerface Membranes Orchestrating Site‐Specific Osteoimmunomodulatory and Antibacterial Effects for Enhanced Osseous Regeneration in Periodontal Therapy

Advanced Functional Materials, EarlyView.
Here, a biointerface membrane engineered with site‐specific interfacial properties is developed. During implantation between gingival and bone defect, the membrane creates a pro‐osteogenic microenvironment, precisely modulates cellular activities at each biointerface, and facilitates the orchestration of complex healing events, ultimately leading to ...
Yuwei Zhu, Tingting Wang, Jing Zhu, Bingtian Zhao, Bingyang Dai, Xiaoyue Zhang, Wei Liu, Cheng Yang, Cheng Dong, Ren Liu, Lei Zhao, Jun Wang, Peilei Shi, To Ngai   +13 more
wiley   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

Advanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

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Dipolar induced Para-Hydrogen-Induced Polarization

Solid State Nuclear Magnetic Resonance, 2014
Analytical expressions for the signal enhancement in solid-state PHIP NMR spectroscopy mediated by homonuclear dipolar interactions and single pulse or spin-echo excitation are developed and simulated numerically. It is shown that an efficient enhancement of the proton NMR signal in solid-state NMR studies of chemisorbed hydrogen on surfaces is ...
Gerd, Buntkowsky, Torsten, Gutmann, Marina V, Petrova, Konstantin L, Ivanov, Ute, Bommerich, Markus, Plaumann, Johannes, Bernarding   +6 more
openaire   +2 more sources

Orthodeuterium induced polarization

Chemical Physics Letters, 1998
Abstract We present a theory and experimental results for the use of orthodeuterium to obtain dramatically enhanced NMR signals of the products of deuteration reactions. Orthodeuterium was enriched in solid nitrogen at 65 K, the deuterations however were carried out at ambient temperature and pressure.
J. Natterer, T. Greve, J. Bargon
openaire   +1 more source

Shock-Induced Polarization in Polar Materials

1979
Several authors [1–4] have shown that polar materials become polarized by the passage of an intense shock wave. The experimental arrangement is shown in Fig. 1. The polar material is the dielectric of a parallel-plate capacitor. An explosive charge is detonated next to one electrode and the shock transmitted into the dielectric causes a current to flow
M. De Icaza-Herrera, A. Migault, J. Jacquesson   +2 more
openaire   +1 more source

Flexoelectrically induced polarization in polar smectic films

Ferroelectrics, 2000
Abstract Phenomenological model of racemic ferroelectric and antiferroelectric liquid crystals, which considers both the tilt and the polarization order parameters explicitly, is presented. Free-standing films with few layers are analyzed within the model.
Mojca Čepič, Barbara Rovšek, Boštjan Žekš   +2 more
openaire   +1 more source

The comparative trial between magnetic induced polarization and electric induced polarization

SEG Technical Program Expanded Abstracts 2009, 2009
Summary Induced polarization is the main means in mineral exploration. Up to now the Electric Induced Polarization has been used widely. However, Electric Induced Polarization is difficult to exert the effect such as rubble, gobi desert, Permafrost, etc.
Pinrong Lin, Jianhua Li, Peng Guo, Yong Li   +3 more
openaire   +1 more source

Anthropogenic Polarization and Polarized Light Pollution Inducing Polarized Ecological Traps

2014
In the last decade it has been recognized that the artificial polarization of light can have uniquely disruptive effects on animals capable of seeing it and has led to the identification of polarized light pollution (PLP) as a new kind of ecological photopollution.
Gábor Horváth, György Kriska, Bruce Robertson   +2 more
openaire   +1 more source

Polarization induced doped transistor

2017
A nitride-based field effect transistor (FET) comprises a compositionally graded and polarization induced doped p-layer underlying at least one gate contact and a compositionally graded and doped n-channel underlying a source contact. The n-channel is converted from the p-layer to the n-channel by ion implantation, a buffer underlies the doped p-layer ...
Song, Bo, Jena, Debdeep, Xing, Huili (Grace), Nomoto, Kazuki, Zhu, Mingda, Hu, Zongyang   +5 more
openaire   +1 more source