Yehan Wang

Apr 1, 2024 | opg.optica.org | Chunying Guan |Wenjia Li |Wenxia Xu |Yehan Wang |Jinhui Shi

We introduce the concept of polarized vortex Smith–Purcell radiation by the interaction of an electron beam and cascaded metasurfaces. The spin and orbital angular momenta of Smith–Purcell radiation are determined by the cascaded metasurface that consists of a grating and a phase gradient metasurface. The grating converts the electron beam radiation into the desired polarized light, while the phase gradient metasurface generates the vortex light.

Oct 30, 2023 | compass.onlinelibrary.wiley.com | Yehan Wang

1 INTRODUCTION The field of music sociology has long been preoccupied with the symbolic classification of music, whereby stylistic differences are utilised to arrange music and individuals into systems of categorisation. Recent scholarly debates on musical taste have centred on the collapse of conventional cultural boundaries between the high arts and popular culture (Lizardo & Skiles, 2016; Peterson, 1992; Van Eijck, 2001).

Jul 14, 2023 | journals.sagepub.com | Yehan Wang

IntroductionIn the global hip-hop context, ‘keep it real’ has been taken as a slogan to express the authenticity of hip-hop, often broadly intended as being ‘true to oneself’ (Pennycook, 2007). However, as hip-hop travels the globe and accretes meaning, claims and practices of authenticity have had to be negotiated in different sociocultural contexts (Charry, 2012; Mitchell, 2001).