An analog of double electromagnetically induced transparency with extremely high group indexes by Yang, An, Yan, Changchun, Tian, Jiebing, Wang, Cheng, Li, Guiming, Zhang, Dao Hua

“…The metamaterial consists of two-layered arrays of U-shaped rings embedded in a medium, with the lower layer rotated by 90◦. …”
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An efficient time-domain implementation of the multichromophoric Förster resonant energy transfer method by Zhong, Kai, Nguyen, Hoang Long, Do, Thanh Nhut, Tan, Howe-Siang, Knoester, Jasper, Jansen, Thomas L. C.

“…We further find that the transfer between the strongly coupled rings of neighboring LH2 complexes can also be well described with our method. …”
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Design of RF front-end circuit blocks for low-power applications by Lim, Kok Meng

“…By incorporating a power amplifier on-chip several considerations need to be addressed, a power amplifier have high gain resulting in a huge signal swings. These signals tend to find their way to other frequency sensitive circuits such as oscillators, through certain feedback paths or substrate coupling. …”
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Sequencing palladium-catalyzed cycloisomerization cascades in a synthesis of the gelsemine core by Liang, G, Anderson, EA

“…Here we report investigations of the relative rates of two different types of ene-ynamide cycloisomerization that form fused and spirocyclic rings, and use of these results to design a sequence-controlled cascade cycloisomerization that prepares the tetracyclic core of gelsemine in a single step. …”

Towards graphane applications in security: the electrochemical detection of trinitrotoluene in seawater on hydrogenated graphene by Seah, Tzu Hui, Poh, Hwee Ling, Chua, Chun Kiang, Sofer, Zdeněk, Pumera, Martin

“…This is likely due to the fact that graphene contains a larger amount of aromatic rings than hydrogenated graphene, enabling larger preconcentration. …”
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Our sub-universe, the wider universe, and their properties by Ng, Yew-Kwang

“…The recent report [1] on pre-Big Bang rings of radiation supports the conception of the present paper.…”
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Innovative application and driving of enhancement mode gallium nitride power transistors by Cai, Aaron Qingwei

“…This is further improved by proposing a 2-stage, 2-phase gate driver to reduce the gate ringing. Simulation is conducted to verify the design and the proposed design demonstrates reduction in gate ringing. …”
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Noise coupling analysis in integrated circuit packaging by Fernandus, Wylie

“…Therefore, signal overshoot, undershoot, and ringing waveforms due to the high data rates will happen which referred as signal errors.…”
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Morphological transformations of vesicles with confined flexible filaments by Shi, Chao, Zou, Guijin, Wu, Zeming, Wang, Meng, Zhang, Xinyun, Gao, Huajian, Yi, Xin

“…Organization of actin filaments or bundles, microtubules, and nanotube rings inside vesicles, liposomes, or cells are discussed. …”
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Discrete Mathematics/ by Biggs, Norman L., author 306897

Trifluoroacetic acid as a molecular probe for the dense phase in liquid-liquid phase-separating peptide systems by Lim, Jessica, Chin, Sze Yuet, Miserez, Ali, Xue, Kai, Pervushin, Konstantin

“…Quantum chemistry modeling of 19F chemical shift differences indicates that the structured complex is formed by the intercalation of one TFA molecule between two stacked Phe aromatic rings, possibly contributing to the stabilization of the condensed dense phase. …”
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Linking microstructure and local mechanical properties in SiC-SiC fiber composite using micromechanical testing by Zayachuk, Y, Karamched, P, Deck, C, Hosemann, P, Armstrong, DEJ

“…The matrix has complex hierarchical microstructure with elongated grains, often featuring twinning, growing radially from the fibers in predominantly <111> direction and forming sets of concentric rings around them. The fibers contain equiaxed grains with carbon precipitates at the grain boundaries. …”

Polymeric carbon nitride with internal n-p homojunctions for efficient photocatalytic CO₂ reduction coupled with cyclohexene oxidation by Zhen, Wenlong, Sun, Jiajun, Ning, Xiaofeng, Shi, Xiangyan, Xue, Can

“…The linkage by the benzene rings results in a large π-conjugated structure and controllable electron-localization, allowing for modulating the electronic structure, optical properties, and lipophilicity of the prepared sample (CDT-DCDA-490). …”
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Analysis and mitigation of spatial integration errors for the material point method by Baumgarten, Aaron S., Kamrin, Ken

“…Despite its robustness, MPM is known to develop significant numerical errors: namely, (i) the particle ringing instability and (ii) solution dependent discretization and integration errors. …”
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Narsarsukite Na2TiOSi4O10 as a low voltage silicate anode for rechargeable Li-ion and Na-ion batteries by Chaupatnaik, Anshuman, Srinivasan, Madhavi, Barpanda, Prabeer

“…Fast lithium (de)insertion without any significant capacity loss can be linked to the rigid endless large tunnels built from the stacked rings of four SiO4 tetrahedra. This silicate material was further found to work as a 0.53 V anode for sodium-ion batteries delivering capacity close to 30 mAh·g-1 (at a rate of C/10). …”
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Laser-induced reduced-graphene-oxide micro-optics patterned by femtosecond laser direct writing by Low, Mun Ji, Lee, Hyub, Lim, Joel Chin Huat, Suchand Sandeep, Chandramathi Sukumaran, Murukeshan, Vadakke Matham, Kim, Seung-Woo, Kim, Young-Jin

“…The optical performances of Fresnel zone plates (FZP) fabricated under the three regimes were evaluated and compared; the results were 0.7%, 2.4%, and 3.8% for focusing efficiency, 12.2 µm, 13.2 µm, and 12 µm for focal spot size, 1.39 mm, 1.89 mm, and 1.77 mm for depth-of-focus for FZPs designed to 15 mm focal length with 10 concentric rings. This fabrication technique provides wide design flexibility to various planar LIRGO micro-optics for microfluidics, lab-on-a-chip, skin-attachable biomedical imaging, and micro photonic devices.…”
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Snowmass White Paper: Precision Studies of Spacetime Symmetries and Gravitational Physics by Adelberger, Eric, Budker, Dmitry, Folman, Ron, Geraci, Andrew A, Harke, Jason T, Kaplan, Daniel M, Kimball, Derek F Jackson, Lehnert, Ralf, Moore, David, Morley, Gavin W, Palladino, Anthony, Phillips, Thomas J, Piacentino, Giovanni M, Snow, William Michael, Sudhir, Vivishek

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Bursting on a vortex tube with initial axial core-size perturbations by Ji, Lingbo, Van Rees, Wim M.

“…An analysis of the vorticity dynamics during bursting reveals that initially the flow behaves qualitatively like a head-on collision of two isolated vortex rings, with the azimuthal vorticity dynamics driving radial growth. …”
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Indefinite metamaterials for optical applications by Bisht, Ankit

“…Using full-wave Finite-difference time-domain (FDTD) simulations with diffraction limited trimer, quadrumer and ringed objects etched on thin perfect electric conductor (PEC) films, we show that the hyperlens model can achieve magnification factors of up to 10X in the far-field (~4.5λ from object’s surface) under a light source with a wavelength of 1 μm, with successful resolution down to 220 nm (~λ/5). …”
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Applications of pentamethyl phenyl ketones in the synthesis of carbocycles and heterocycles by Lunt-Laurin, CE

“…We then explore how tri-substituted THP rings behave, allowing us to access di-substituted cyclohexenes with both retention and inversion of the stereochemistry.…”