supported by the National Natural Science Foundation of China (Grant Nos.11774314 and 12274370);Scientific Research Start-up Fund of Zhejiang Normal University (Grant No.YS304222903)。
The presence of two sublattices in hexagonal graphene brings two energetically degenerate extremes in the conduction and valence bands, which are identified by the valley quantum number. Recently, this valley degree o...
Project supported by the Scientific research project of Zhejiang Provincial Department of Education(Grant No.Y202250547);the Scientific Research Project ofWenzhou University of Technology(Grant No.ky202205);the Hunan Provincial Natural Science Foundation of China(Grant No.2022JJ30394).
The reflected group delay from a multilayer structure comprising a one-dimensional photonic crystal coated with a bulk Dirac semimetal(BDS)separated by a spacer layer is investigated theoretically.It is shown that the...
Project supported by the National Key R&D Program of China (Grant Nos. 2017YFA0700503 and 2018YFA0209101);the National Natural Science Foundation of China (Grant Nos. 61821002, 11734005, 62075041, and 61704024)。
Localized surface plasmon resonance(LSPR) has caused extensive concern and achieved widespread applications in optoelectronics. However, the weak coupling of plasmons and excitons in a nanometal/semiconductor system r...
Project supported by the National Natural Science Foundation of China(Grant Nos.92163204,61921002,and 62171098)。
The Ga N high electron mobility transistor(HEMT)has been considered as a potential terahertz(THz)radiation source,yet the low radiation power level restricts their applications.The HEMT array is thought to improve the...
Project supported by the National Natural Science Foundation of China(Grant No.11974253);the National Key Research and Development Program of China(Grant No.2017YFA0303600);the Scientific Research Project of Leshan Normal University,China(Grant Nos.XJR17007,LZDP012,and DGZZ202009).
The operating frequencies of surface plasmons in pristine graphene lie in the terahertz and infrared spectral range,which limits their utilization.Here,the high-frequency plasmons in doped graphene nanostructures are ...
the National Natural Science Foundation of China(Grant Nos.11874404 and 11634016);the National Key Research and Development Program of China(Grant Nos.2016YFA0302400,2016YFA0202300,and 2017YFA0303600);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB33000000);supported by the Youth Innovation Promotion Association of Chinese Academy of Sciences。
Pb(111)film is a special system that exhibits strong quantum size effects in many electronic properties.The collective excitations,i.e.,plasmons,in Pb(111)films are also expected to show signatures of the quantum size...
Project supported by the National Natural Science Foundation of China(Grant No.11947007);the Natural Science Foundation of Guangdong Province,China(Grant No.2019A1515011499);the Department of Education of Guangdong Province,China(Grant No.2019KTSCX087)。
A distant-neighbor quantum-mechanical method is used to study the nonlinear optical wave mixing in graphene nanoflakes(GNFs),including sum-and difference-frequency generation,as well as four-wave mixing.Our analysis s...
Project supported by the National Natural Science Foundation of China(Grant Nos.11774248 and 11974253)。
To investigate the optical properties of the ternary nanostructures, the nanodisk, core–shell, and three-sphere structures are constructed. The extinction coefficients and electric near-field distributions of these s...
Project supported by the National Key R&D Program of China(Grant No.2017YFA0303600);the National Natural Science Foundation of China(Grant Nos.11974253 and 11774248)。
We study the plasmonic properties of hybrid nanostructures consisting of double vacancy defected graphene(DVDGr)and metallic nanoarrays using the time-dependent density functional theory. It is found that DVDGr with p...
Project supported by the National Key Research and Development Program of China(Grant No.2016YFA0203500);the National Natural Science Foundation of China(Grant No.11874407);Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB 30000000)
We systematically studied surface plasmons reflection by graphene wrinkles with different heights on SiC substrate.Combined with numerical simulation, we found that the geometry corrugation of a few nanometer height w...