Results 61 to 70 of about 5,547 (252)

Multi‐Functional ZnO–Te Heterojunction Devices Enabling Compact Frequency Quadrupler

Advanced Functional Materials, EarlyView.
Wafer‐scale ZnO–Te heterojunction devices featuring tunable double negative differential transconductance (D‐NDT) are demonstrated at ≤ 200°C. Leveraging this unique characteristic, a single‐stage frequency quadrupler is realized, achieving a 64%–75% reduction in device count.
Jae Hyeon Jun, Byeong Gwan Kim, Min Seo Kang, Ui Gwan Shin, Minjae Kim, Kiyung Kim, Hae‐Won Lee, Yongsu Lee, Byoung Hun Lee   +8 more
wiley   +1 more source

Flavourful $Z'$ portal for vector-like neutrino Dark Matter and $R_{K^{(*)}}$

, 2018
We discuss a flavourful $Z'$ portal model with a coupling to fourth-family singlet Dirac neutrino dark matter. In the absence of mixing, the $Z'$ is fermiophobic, having no couplings to the three chiral families, but does couple to a fourth vector-like ...
Falkowski, Adam, King, Stephen F., Perdomo, Elena, Pierre, Mathias   +3 more
core   +3 more sources

Symmetries, Sum Rules and Constraints on Effective Field Theories [PDF]

, 2014
Using unitarity, analyticity and crossing symmetry, we derive universal sum rules for scattering amplitudes in theories invariant under an arbitrary symmetry group.
Bellazzini, Brando, Martucci, Luca, Torre, Riccardo   +2 more
core   +4 more sources

Revealing the Hidden Role of Cd in p‐Type Mg3Sb2: Enhanced Thermoelectric Performance by Grain Boundary Segregation Engineering

Advanced Functional Materials, EarlyView.
The hidden role of Cd segregation at grain boundaries is revealed in p‐type Mg3Sb2 by atom probe tomography and other advanced characterizations. Grain boundary Cd enrichment suppresses the SbMg+ hole‐killer formation and lowers potential barriers, enhancing electrical conductivity.
Zhou Li, Deming Dong, Xiaoyu Yang, Jun Qian, Mengruizhe Kong, Han Wan, Ni Ma, Wei Bai, Pengfei Nan, Binghui Ge, Jiming Song, G. Jeffrey Snyder, Yuan Yu   +12 more
wiley   +1 more source

A minimal Little Higgs model

, 2008
We discuss a Little Higgs scenario that introduces below the TeV scale just the two minimal ingredients of these models, a vectorlike T quark and a singlet component (implying anomalous couplings) in the Higgs field, together with a pseudoscalar singlet \
Barcelo, Roberto, Masip, Manuel
core   +1 more source

Unlocking Multi‐Valley Energy Pockets and Interface‐Induced Phonon Filtering in InSb Thermoelectrics by Reaction‐Driven Interface Engineering

Advanced Functional Materials, EarlyView.
InSb, a narrow‐bandgap semiconductor with high carrier mobility, is promising for thermoelectric energy conversion but suffers from high lattice thermal conductivity and strong bipolar conduction. Here, in situ interface engineering using Co2O3 nanoprecursors forms hierarchical CoSbx/In2O3/CoSb3 heterostructures that enhance phonon scattering and ...
Jiwu Xin, Xiao Yang, Xiao‐Lei Shi, Chengyun Xu, Xi Ling, Pengyu Zhang, Jinfeng Dong, Yong Du, Haisheng Chen, Ting Zhang, Zhi‐Gang Chen   +10 more
wiley   +1 more source

KeV Warm Dark Matter and Composite Neutrinos

, 2012
Elementary keV sterile Dirac neutrinos can be a natural ingredient of the composite neutrino scenario. For a certain class of composite neutrino theories, these sterile neutrinos naturally have the appropriate mixing angles to be resonantly produced warm
A Anisimov, A Boyarsky, A Boyarsky, A Boyarsky, A Boyarsky, A Boyarsky, A Boyarsky, A Dolgov, A Kusenko, A Kusenko, A Kusenko, A Merle, A Rajaraman, C-Q Geng, CR Watson, D Aristizabal Sierra, D Boyanovsky, Dean J. Robinson, E Farhi, E Komatsu, F Bezrukov, GB Gelmini, H Vega de, H Vega de, J Beringer, J Wu, J Zavala, K Abazajian, K Petraki, KA Olive, KL McDonald, M Duerr, M Laine, M Loewenstein, M Loewenstein, M Shaposhnikov, N Arkani-Hamed, P Bode, PJ Fox, PL Biermann, R Hundi, S Das, S Dodelson, T Araki, T Asaka, T Csorgo, T DeGrand, T Okui, U Seljak, W Liao, X-D Shi, Y Grossman, Y Grossman, Yuhsin Tsai   +53 more
core   +1 more source

Light‐Actuated Fiber‐Climbing Inchworm Robot Toward Endoluminal Navigation

Advanced Functional Materials, EarlyView.
A kirigami‐inspired soft inchworm robot harnesses optical energy from a customized side‐emitting optical fiber, guaranteeing its propulsion along the fiber body. The wavelength‐selective responsiveness of dye‐functionalized liquid crystal elastomers and the application of temporal illumination patterns enable sequential control of robot components. The
Antonio Lobosco, Leilei Song, Fan Liu, Yu‐Hsiang Lin, Venkatasubramanian Kalpathy Venkiteswaran, Hao Zeng, Sarthak Misra   +6 more
wiley   +1 more source

Global fluid simulation of plasma turbulence in stellarators with the GBS code

Nuclear Fusion
The implementation of three-dimensional magnetic fields, such as the ones of stellarators, in the GBS code (Ricci et al 2012 Plasma Phys. Control. Fusion 54 124047; Giacomin et al 2022 J. Comput. Phys. 464 111294) is presented, and simulation results are
A.J. Coelho, J. Loizu, P. Ricci, Z. Tecchiolli   +3 more
doaj   +1 more source

Interfacial Adsorption Engineering Enables a Highly Utilized Zinc Anode With 99.9% Coulombic Efficiency

Advanced Functional Materials, EarlyView.
When hydrated zinc ions are deposited onto Cu substrates at practical current densities, the modified Cu enables simultaneously compact zinc growth and suppressed hydrogen evolution. This regulatory effect originates from the superior adsorption of the modified Cu interface, which enhances zincophilicity and the hydrogen desorption barrier, thereby ...
Zhe Zhu, Xiaoqiao Liao, Yihao Long, Mengmeng Yang, Ibrahem O. Baibars, Ruiqi Song, Zhun Shi, Liang He, Chuan Zhao   +8 more
wiley   +1 more source