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  • A long-nosed chameleon hid its true identity for 150 years

    A long-nosed chameleon hid its true identity for 150 years

    Madagascar is widely recognized for its extraordinary variety of chameleons. More than 40% of all species known worldwide live on this island off the East African coast. Among them is the so called Pinocchio chameleon, a reptile described for…

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  • Abdullah bin Zayed, Chinese Foreign Minister affirm depth of Comprehensive Strategic Partnership between two countries in joint statement

    Abdullah bin Zayed, Chinese Foreign Minister affirm depth of Comprehensive Strategic Partnership between two countries in joint statement

    At the invitation of H.H. Sheikh Abdullah bin Zayed Al Nahyan, Deputy Prime Minister and Minister of Foreign Affairs, Member of the Political Bureau of the CPC Central Committee and Foreign Minister of the People’s Republic of China, paid…

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  • Veronica Wiggins Named to 2026 NFCA Hall of Fame

    Veronica Wiggins Named to 2026 NFCA Hall of Fame

    LAS VEGAS — Legendary Florida A&M head coach Veronica Wiggins let the Rattlers’ softball program from 1990-2020….

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  • NASA DARES Community Update At AGU

    NASA DARES Community Update At AGU

    …

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  • Legal community an important pillar of state: PM – RADIO PAKISTAN

    1. Legal community an important pillar of state: PM  RADIO PAKISTAN
    2. Govt-backed group cements its hold on PBC  The Express Tribune
    3. Pakistan Bar Council polls: Asma Jahangir Group secures majority in Punjab  samaa tv
    4. Lanjar congratulates Asma Jahangir…

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  • A long-nosed chameleon hid its true identity for 150 years

    A long-nosed chameleon hid its true identity for 150 years

    Madagascar is widely recognized for its extraordinary variety of chameleons. More than 40% of all species known worldwide live on this island off the East African coast. Among them is the so called Pinocchio chameleon, a reptile described for…

    Continue Reading

  • Lagos’ first street art festival turns city into ‘open-air gallery’

    Lagos’ first street art festival turns city into ‘open-air gallery’

    Toyin Adedokun / AFP via Getty Images Two men walk past a brightly coloured mural featuring a woman in sunglasses holding a globe. There is a can and a bus on either sideToyin Adedokun / AFP via Getty Images

    Parts of Nigeria’s biggest city, Lagos, have been turned into an “open-air gallery”, in the words of the organisers of the city’s first street art festival.

    One of the featured artists, Ashaolu Oluwafemi, told…

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  • Maine wraps up Fall Semester with a win in Black Bear Invitational

    Maine wraps up Fall Semester with a win in Black Bear Invitational

    ORONO, Maine – The University of Maine track and field program hosted their Black Bear Invitational meet on…

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  • Percolation effect induced significant changes in the complex permittivity and permeability of silver-epoxy nano-composites

  • Gao, X., Yang, M., Pereira, A., Guo, S. & Zhang, H. Simulation calculation of selective reflective films based on metamaterials and prediction of color in light filter with machine learning. Eng. Sci. https://doi.org/10.30919/es1158 (2024).

    Google Scholar 

  • Sahin, S., Nahar, N. K. & Sertel, K. Dielectric properties of Low-Loss polymers for MmW and THz applications. J. Infrared Millim. Terahertz Waves. 40(5), 557–573. https://doi.org/10.1007/s10762-019-00584-2 (2019).

    Google Scholar 

  • Cava, R. F., Peck, W. F. & Krajewski, J. J. Enhancement of the dielectric constant of Ta2O5 through substitude with TiO2. Nature 377, 21 (1995).

    Google Scholar 

  • Kawarasaki, M., Tanabe, K., Terasaki, I., Fujii, Y. & Taniguchi, H. Intrinsic enhancement of dielectric permittivity in (Nb + In) co-doped TiO(2) single crystals. Sci. Rep. 7(1), 5351. https://doi.org/10.1038/s41598-017-05651-z (2017).

    Google Scholar 

  • Sebastian, M. T., Ubic, R. & Jantunen, H. Low-loss dielectric ceramic materials and their properties. Int. Mater. Rev. 60(7), 392–412. https://doi.org/10.1179/1743280415y.0000000007 (2015).

    Google Scholar 

  • Webb, A., Shchelokova, A., Slobozhanyuk, A., Zivkovic, I. & Schmidt, R. Novel materials in magnetic resonance imaging: high permittivity ceramics, metamaterials, metasurfaces and artificial dielectrics. MAGMA 3(6), 875–894. https://doi.org/10.1007/s10334-022-01007-5 (2022).

    Google Scholar 

  • Watanabe, A. O., Ali, M., Sayeed, S. Y. B., Tummala, R. R. & Raj, P. M. A review of 5G Front-End systems package integration. IEEE Trans. Compon. Packag Manuf. Technol., 118 11 (2020).

  • Li, J. & Ghalichechian, N. Suspended Highly-efficient On-chip Phased Array Antenna at 60 GHz, presented at the 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, (2019).

  • Popa, B. I. & Cummer, S. A. Compact dielectric particles as a Building block for low-loss magnetic metamaterials. Phys. Rev. Lett., 100(20), 207401, 2008, https://doi.org/10.1103/PhysRevLett.100.207401

  • Felix, N., Tran-Huu-Hue, L. P., Walker, L., Millar, C. & Lethiecq, M. The application of high permittivity piezoelectric ceramics to 2D array transducers for medical imaging. Ultrasonics 38, 1–8 (2000).

    Google Scholar 

  • Chen, W. et al. Tunable ultrahigh dielectric constant (tuHDC) ceramic technique to largely improve RF coil efficiency and MR imaging performance. IEEE Trans. Med. Imaging. 39(10), 3187–3197. https://doi.org/10.1109/TMI.2020.2988834 (2020).

    Google Scholar 

  • Rong, C., Yan, L., Li, L., Li, Y. & Liu, M. Rev. Metamaterials Wirel. Power Transf. Mater. (Basel), https://doi.org/10.3390/ma16176008. (2023).

    Google Scholar 

  • Lee, W. & Yoon, Y. K. Wireless power transfer systems using metamaterials: A review. IEEE Access. 8, 147930–147947. https://doi.org/10.1109/access.2020.3015176 (2020).

    Google Scholar 

  • Li, F. et al. Wireless power transfer tuning model of electric vehicles with pavement materials as transmission media for energy conservation. Appl. Energy. https://doi.org/10.1016/j.apenergy.2022.119631 (2022).

    Google Scholar 

  • Wang, B. et al. Wirel. Power Transf. Metamaterials Presented EUCAP (2011).

  • Peev, D., Kolev, N. & Sivkov, Y. Stratified Layer Composite Material for Radar Anti-reflective Coating, presented at the 2022 22nd International Symposium on Electrical Apparatus and Technologies (SIELA) (2022).

  • Huang, J. Y., Fei, G. T., Xu, S. H. & Wang, B. ZnO–SiO2 composite coating with anti-reflection and photoluminescence properties for improving the solar cell efficiency. Compos. Part. B: Eng. 251 https://doi.org/10.1016/j.compositesb.2022.110486 (2023).

  • Pendry, J. B. Negative refraction makes a perfect lens. Phys. Rev. Lett. 85(18), 3966–3969. https://doi.org/10.1103/PhysRevLett.85.3966 (2000).

    Google Scholar 

  • Shalaev, V. M. Optical negative-index metamaterials. Nat. Photonics (2007).

  • Veselago, V. G. The electrodynamics of substances with simultaneously negative values of permittivity and permeability. Soviet Phys. Uspekhi, 10, 4 (1968).

  • Smith, D. R., Pendry, J. B. & Wiltshire, M. C. Metamaterials and negative refractive index. Science 305(5685), 788–792. https://doi.org/10.1126/science.1096796 (2004).

  • Navarro-Cía, M., Akmansoy, E., Marcellin, S. & Han, J. Negative index and mode coupling in all-dielectric metamaterials at Terahertz frequencies, EPJ Applied Metamaterials, 5, (2018). https://doi.org/10.1051/epjam/2018006

  • Suzuki, T., Sekiya, M., Sato, T. & Takebayashi, Y. Negative refractive index metamaterial with high transmission, low reflection, and low loss in the Terahertz waveband. Opt. Express. 26(7), 8314–8324. https://doi.org/10.1364/OE.26.008314 (2018).

    Google Scholar 

  • Padilla, W. J., Basov, D. N. & Smith, D. R. Negative refractive index metamaterials. Mater. Today. 9, 7–8. https://doi.org/10.1016/s1369-7021(06)71573-5 (2006).

    Google Scholar 

  • Yao, H. Y., Lin, Y. W. & Chang, T. H. Dielectric properties of BaTiO(3)-epoxy nanocomposites in the microwave regime. Polymers (2021). https://doi.org/10.3390/polym13091391

  • Broadbent, S. R. & Hammersley, J. M. Percolation processes I. Crystals and mazes. Math. Proc. Camb. Philos. Soc. 53(3), 629–641. https://doi.org/10.1017/s0305004100032680 (1957).

  • Bergman, D. J. & Imry, Y. Critical behavior of the complex dielectric constant near the percolation threshold of a heterogeneous material. Phys. Rev. Lett. 39, 1222–1225. https://doi.org/10.1103/PhysRevLett.39.1222 (1977).

    Google Scholar 

  • Stephen, M. A. Magnetic susceptibility of percolating clusters. Phys. Lett. 87A(1), 2 (1981).

  • Bowman, D. R. & Stroud, D. Divergent diamagnetism in superconducting and normal metal composites near the percolation threshold. Phys. Rev. Lett. 52(4), 299–302. https://doi.org/10.1103/PhysRevLett.52.299 (1984).

    Google Scholar 

  • Lagar’kov, A. N., Panina, L. V. & Sarychev, A. K. Effective Magnetic Permeability of Composite Materials Near the Percolation Threshold. MRS Proceedings (1991). https://doi.org/10.1557/proc-232-195

  • Su, S. C. & Chang, T. H. Manipulating the permittivities and permeabilities of epoxy/silver nanocomposites over a wide bandwidth. Appl. Phys. Lett. https://doi.org/10.1063/5.0006835 (2020).

    Google Scholar 

  • Stauffer, D. & Aharony, A. Introduction To Percolation Theory (Taylor & Francis, 1992).

  • Nan, C. W. Physics of inhomogeneous inorganic materials. Prog Mater. Sci. (1993).

  • Meloni, M. et al. Explosive percolation yields highly-conductive polymer composites. Nat. Commun. 13, 7463. https://doi.org/10.1038/s41467-022-34631-9 (2022).

    Google Scholar 

  • Liu, X. et al. Nanoparticle geometry effects on percolation in Ni–Fe/PEEK. Phys. Rev. B 106, 224417. https://doi.org/10.1103/PhysRevB.106.224417

  • Shi, G., Sun, X. & Liu, Y. Percolation-Triggered negative permittivity in nano carbon Powder/Polyvinylidene fluoride composites. Molecules https://doi.org/10.3390/molecules29163862 (2024).

    Google Scholar 

  • Chang, C. H., Su, S. C., Chang, T. H. & Chang, C. R. Frequency-induced negative magnetic susceptibility in epoxy/magnetite nanocomposites. Sci. Rep. https://doi.org/10.1038/s41598-021-82590-w (2021).

    Google Scholar 

  • Wu, Z. et al. Dielectric properties and thermal conductivity of polyvinylidene fluoride synergistically enhanced with Silica@Multi-walled carbon nanotubes and Boron nitride. ES Mater. Manuf. https://doi.org/10.30919/esmm5f847 (2023).

    Google Scholar 

  • Harris, A. B. Field-theoretic approach to biconnectedness in percolating systems. Phys. Rev. B. 28(5), 2614–2629. https://doi.org/10.1103/PhysRevB.28.2614 (1983).

    Google Scholar 

  • Wang, L., Bai, Y., Lu, X., Cao, J. L. & Qiao, L. J. Ultra-low percolation threshold in ferrite-metal cofired ceramics brings both high permeability and high permittivity. Sci. Rep. 5, 7580. https://doi.org/10.1038/srep07580 (2015).

    Google Scholar 

  • Shehzad, K. et al. Two percolation thresholds and remarkably high dielectric permittivity in pristine carbon nanotube/elastomer composites .App. Nanosci. 5(8), 969–974. https://doi.org/10.1007/s13204-015-0403-0 (2015).

  • Karpov, V. G., Serpen, G. & Patmiou, M. Percolation with plasticity for neuromorphic systems. J. Physics: Complex. 1(3), 035009 (2020).

    Google Scholar 

  • Dlamini, Z. W. et al. Resistive switching in Polyvinylpyrrolidone/Molybdenum disulfide Composite-Based memory devices. Acta Phys. Pol., A. 141(5), 439–444. https://doi.org/10.12693/APhysPolA.141.439 (2022).

    Google Scholar 

  • Park, J. et al. Reversible electrical percolation in a stretchable and self-healable silver-gradient nanocomposite bilayer. Nat. Commun. 13(1), 5233. https://doi.org/10.1038/s41467-022-32966-x (2022).

    Google Scholar 

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  • President felicitates Sultan Golden for setting new world record in reverse driving – RADIO PAKISTAN

    1. President felicitates Sultan Golden for setting new world record in reverse driving  RADIO PAKISTAN
    2. Pakistan’s Sultan Golden sets world records for fastest reverse drive, ramp jump  Geo News
    3. Stuntman Sultan Golden breaks world record for fastest…

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