Defect-rich single-layer MoS2 nanosheets with high dielectric-loss for contrast-enhanced thermoacoustic imaging of breast tumor

2019 ◽  
Vol 115 (7) ◽  
pp. 073701 ◽  
Author(s):  
Yaping Li ◽  
Qihao Tan ◽  
Huan Qin ◽  
Da Xing
Keyword(s):  
Dielectric Loss ◽  
Breast Tumor ◽  
Single Layer ◽  
Mos2 Nanosheets ◽  
Thermoacoustic Imaging ◽  
High Dielectric Loss ◽  
Contrast Enhanced ◽  
High Dielectric

Increasing dielectric loss of a graphene oxide nanoparticle to enhance the microwave thermoacoustic imaging contrast of breast tumor

Nanoscale ◽  
2019 ◽  
Vol 11 (46) ◽  
pp. 22222-22229 ◽  
Author(s):  
Chang Yuan ◽  
Baohua Qin ◽  
Huan Qin ◽  
Da Xing
Keyword(s):  
Graphene Oxide ◽  
High Resolution ◽  
Dielectric Loss ◽  
Breast Tumor ◽  
Microwave Range ◽  
Structure Information ◽  
Thermoacoustic Imaging ◽  
Dielectric Contrast ◽  
Oxide Nanoparticle ◽  
High Dielectric

Microwave-induced thermoacoustic imaging (MTAI) utilizes the high dielectric contrast of tissues in the microwave range, and, combined with the high resolution of ultrasound imaging, can noninvasively obtain anatomical and functional structure information.

2D MoS2/graphene composites with excellent full Ku band microwave absorption

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 106187-106193 ◽  
Author(s):  
Xiaoxia Wang ◽  
Wenling Zhang ◽  
Xuqiang Ji ◽  
Baoqin Zhang ◽  
Mingxun Yu ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Microwave Absorption ◽  
High Dielectric Loss ◽  
High Dielectric ◽  
Ku Band

2D MoS2/graphene composites were proved to be promising full Ku band MA materials due to their superb high dielectric loss.

Fabrication and radio frequency characterization of high dielectric loss tubule-based composites near percolation

1998 ◽  
Vol 84 (11) ◽  
pp. 6109-6113 ◽  
Author(s):  
S. L. Browning ◽  
J. Lodge ◽  
R. R. Price ◽  
J. Schelleng ◽  
P. E. Schoen ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
Radio Frequency ◽  
High Dielectric Loss ◽  
High Dielectric

Impact of High-Dielectric-Loss Materials on the Microwave Field in EPR Experiments

1996 ◽  
Vol 118 (2) ◽  
pp. 173-188 ◽  
Author(s):  
Minoru Sueki ◽  
George A. Rinard ◽  
Sandra S. Eaton ◽  
Gareth R. Eaton
Keyword(s):  
Dielectric Loss ◽  
Microwave Field ◽  
High Dielectric Loss ◽  
High Dielectric ◽  
Epr Experiments

scholarly journals Synthesis and characterization of titanium dioxide doped nickel oxide dielectric materials

2021 ◽  
Vol 6 (1) ◽  
pp. 31-35
Author(s):  
Nurul Ainon Bakar ◽  
Muhammad Azwadi Sulaiman ◽  
Julie Juliewatty Mohamed
Keyword(s):  
Grain Size ◽  
Dielectric Loss ◽  
Nickel Oxide ◽  
Dielectric Materials ◽  
Solid State Reaction Method ◽  
Sem Analysis ◽  
Calcination Process ◽  
High Dielectric Loss ◽  
High Dielectric

Nickel oxide (NiO) belongs to the transition metal oxide family, having good dielectric constantwith the range of 103 – 105, but it has high dielectric loss. In this research, the effect of titaniumdioxide (TiO2) addition into NiO was investigated. Generally, TiO2 was used in the application ofelectrical ceramic, catalysts, electric conductors and chemical intermediates. Ni1-xTixO1+x wasprepared via solid-state reaction method with 6 different TiO2 compositions. The preparation startedwith the powder mixing process for 24 hours and followed by calcination process at 950 °C for 4hours. Then, the calcined powders were compacted into 6 mm pellet shape under pressure of 250MPa pressure. Three pellets were made for each TiO2 composition. Those pellets were sintered at1250 °C for 5 hours. XRD results showed that pure NiO at 0.01 and 0.02 mole % of TiO2compositions produced single NiO crystalline phase, while 0.03, 0.05 and 0.10 mol % of TiO2showed the TiO2, instead of NiO phases. SEM analysis showed that increasing TiO2 concentrationmake the grain size increase, with 0.02 mole % of TiO2 gave the largest grain size, shows that 0.02mole % is the optimum TiO2 concentration for grain size enlargement. Furthermore, the bulkdensity of Ni1xTixO1+xpellet was reduces at higher TiO2 concentration. In dielectric test, the additionof 0.03 mole % of TiO2 gave the highest dielectric constant with value of 4.51 x 1014 and 0.05 mole% of TiO2 gives the result of lowest dielectric loss (0.53).

Preparation and unique dielectric properties of nanoporous materials with well-controlled closed-nanopores

2016 ◽  
Vol 18 (28) ◽  
pp. 19183-19193 ◽  
Author(s):  
Cuijiao Zhao ◽  
Xiaonan Wei ◽  
Yawen Huang ◽  
Jiajun Ma ◽  
Ke Cao ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Dielectric Loss ◽  
Porous Structure ◽  
Barrier Properties ◽  
Nanoporous Materials ◽  
Low Dielectric Constant ◽  
Low Dielectric ◽  
High Dielectric Loss ◽  
High Dielectric

Although general porous materials have a low dielectric constant, their uncontrollable opened porous structure results in high dielectric loss and poor barrier properties, thus limiting their application as interconnect dielectrics.

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