Results 71 to 80 of about 6,090 (227)

Dirac Surface‐State Driven Broad Spectral Band Low Quantum Energy Photoresponse in Quaternary Topological BiSbSe2Te

Advanced Science, EarlyView.
Quaternary topological BiSbSe2Te are synthesized and demonstrates a broad spectral band photoresponse, ranging from infrared to terahertz and to millimeter waves, with a particular excellence on detection of low quantum energy terahertz photons. The observed photoresponse is attributed to the excitation of plasmonic nonequilibrium electrons originating
Tianning Zhang, Jinchao Tong, Jiantian Zhang, Peng Yu, Heng Luo, Luo Yan, Boyu Yang, Tiantian Huang, Junhui Ran, Yan Chen, Liujiang Zhou, Xin Chen, Ning Dai, Jianlu Wang, Junhao Chu   +14 more
wiley   +1 more source

The Rapid Detection of Paclitaxel-Induced Changes in Cervical Cancer Cells Using an Ultrasensitive Biosensor

Photonics
Background: Paclitaxel is a widely used cancer treatment drug that has a significant inhibitory effect on cervical cancer cells (HeLa cells). This study aims to investigate the effects of paclitaxel on HeLa cells and evaluate the application of terahertz
Liwen Zhang, Gan Chen, Yating Hao, Yan Peng   +3 more
doaj   +1 more source

Absorption‐Dominant Electromagnetic Interference Shielding of Ti3C2Tx MXene‐Coated and Fe3O4‐Integrated TPMS Composites with Coupled Gradient Conductivity and Size‐Graded Structure

Advanced Science, EarlyView.
A functionally driven variable‐cell size and gradient‐conductive coated TPMS structure was developed. Accordingly, stepwise longitudinal gradient impedance was realized, achieving absorption‐dominant EMI shielding (absorptivity≈0.85) with an EMI SET of ≈ 59 dB, for 10 mm‐thick composites. Further increasing the thickness of composites to 20 mm achieved
Abdallah Kamal, Baosong Li, Dawei Zhang, Muhammad Mujtaba Syed, Adam Otabil, Faisal Shahzad, Lianxi Zheng, Kin Liao   +7 more
wiley   +1 more source

Dual wavelength Brillouin laser terahertz source stabilized to carbonyl sulfide rotational transition

Nature Communications
Optical-based terahertz sources are important for many burgeoning scientific and technological applications. Among such applications is precision spectroscopy of molecules, which exhibit rotational transitions at terahertz frequencies.
James Greenberg, Brendan M. Heffernan, William F. McGrew, Keisuke Nose, Antoine Rolland   +4 more
doaj   +1 more source

Electric‐Field Control of Terahertz Response via Spin‐Corner‐Layer Coupling in Altermagnetic Bilayers

Advanced Science, EarlyView.
A spin‐corner‐layer coupling mechanism is proposed in 2D altermagnetic bilayers. Exemplified by NiZrI6, the spin, layer, and topological corner states are simultaneously controlled by an ultralow electric field, enabling active modulation of terahertz absorption, emission, and polarization.
Jianhua Wang, Yilin Han, Shifeng Qian, Zhenxiang Cheng, Wenhong Wang, Zhi‐Ming Yu, Xiaotian Wang   +6 more
wiley   +1 more source

Polarons in Heterogeneous Photo(electro)Catalysts

Angewandte Chemie, EarlyView.
Polarons are defined as quasiparticles consisting of electrons/holes covered by a cloud of virtual phonons, which are beneficial/detrimental to the electronic properties of materials. This minireview provides a conceptual overview of how small polaron formation influences the photon absorption, charge transport and separation, and surface reactivity in
Hao Wu, Fatwa F. Abdi, Yun Hau Ng
wiley   +2 more sources

Charge‐Acoustic Phonon Coupling Determined Carrier Transport Properties in FAxMA1−xPbBr3 Perovskite Single Crystals

Advanced Science, EarlyView.
This study investigates acoustic phonon‑carrier coupling in FAxMA1−xPbBr3 single crystals using time‑domain Brillouin scattering. The results show that increasing the FA content in FAxMA1−xPbBr3 single crystal reduces both the elastic constant and the intrinsic carrier mobility governed by the acoustic phonon‑carrier coupling.
Wei Zhang, Zheng Zou, Tiehui Wu, Zijie Xiao, Dan Feng, Jianbin Zhong, Xianshao Zou, Ningjiu Zhao   +7 more
wiley   +1 more source

Tailoring Electronic Properties of Precision Graphene Nanoribbons via Nanopore Engineering

Angewandte Chemie, EarlyView.
Novel porous graphene nanoribbons incorporating [18]annulene nanopores, together with a nonporous GNR of identical width, have been synthesized. Spectroscopic and theoretical analyses reveal that nanopore incorporation effectively tunes their electronic properties by enlarging the bandgap, reducing charge‐carrier mobility, and modulating exciton ...
Kun Liu, Guanzhao Wen, Gianluca Serra, Nicolás Arisnabarreta, Hongde Yu, Andrea Lucotti, Yarden Peleg Walg, Hartmut Komber, Zhen‐Lin Qiu, Qing‐Song Deng, Ran He, Wenhui Niu, Thomas Heine, Eike Brunner, Mischa Bonn, Steven De Feyter, Matteo Tommasini, Hai I. Wang, Ji Ma, Xinliang Feng   +19 more
wiley   +2 more sources

Large‐Aperture Polarization‐Independent Broadband Achromatic All‐Dielectric Metalens for Terahertz Focusing

Advanced Science, EarlyView.
A large‐aperture, high focusing efficiency and polarization‐independent THz single‐layer achromatic metalens is reported via discrete multi‐wavelength achromatic design and global optimization algorithm. The fabricated metalens exhibits a largest diameter of 2.21 cm, excellent achromatic performance, extremely high average focusing efficiency (> 46 ...
Xiaoqiang Jiang, Xu Chen, Zechuan Bin, Fu Tang, Min Hu, Manman Li, Baoli Yao   +6 more
wiley   +1 more source

Metamaterial-Enhanced Nonlinear Terahertz Spectroscopy

EPJ Web of Conferences, 2013
We demonstrate large nonlinear terahertz responses in the gaps of metamaterial split ring resonators in several materials and use nonlinear THz transmission and THz-pump/THz-probe spectroscopy to study the nonlinear responses and dynamics.
Zhang X., Perkins B. G., Brandt N. C., Sternbach A., Strikwerda A. C., Zhang J., Fan K., Liu M., Hwang H. Y., Averitt R. D., Nelson K. A.   +10 more
doaj   +1 more source