129 citations · 301 across the 7 of their papers we have counts for
7 papers
Direct Nanopatterning of Complex 3D Surfaces and Self-Aligned Superlattices via Molecular-Beam Holographic Lithography
Shuangshuang Zeng, Tian Tian, Jiwoo Oh +1
Conventional lithography methods involving pattern transfer through resist templating face challenges of material compatibility with various process solvents. Other approaches of d…
Strong Repulsive Lifshitz-van der Waals Forces on Suspended Graphene
Gianluca Vagli, Tian Tian, Franzisca Naef +4
Understanding surface forces of two-dimensional (2D) materials is of fundamental importance as they govern molecular dynamics and atomic deposition in nanoscale proximity. Despite…
Metasurface-Based Free-Space Multi-port Beam Splitter with Arbitrary Power Ratio
Tian Tian, Yuxuan Liao, Xue Feng +4
A beam splitter (BS) is one of the most critical building blocks in optical systems. Despite various attempts of flat-type BSs to miniaturize the conventional cube BS reported, it…
Solid-State Lifshitz-van der Waals Repulsion through Two-Dimensional Materials
Tian Tian, Gianluca Vagli, Franzisca Naef +7
In the 1960s, Lifshitz et al. predicted that quantum fluctuations can change the van der Waals (vdW) interactions from attraction to repulsion. However, the vdW repulsion, or its l…
Electronic polarizability as the fundamental variable in the dielectric properties of two-dimensional materials
Tian Tian, Declan Scullion, Dale Hughes +5
The dielectric constant, which defines the polarization of the media, is a key quantity in condensed matter. It determines several electronic and optoelectronic properties importan…
Spectroscopic size and thickness metrics for liquid-exfoliated h-BN
Aideen Griffin, Andrew Harvey, Brian Cunningham +8
For many 2D materials, optical and Raman spectra are richly structured, and convey information on a range of parameters including nanosheet size and defect content. By contrast, th…
Asymmetric Electric Field Screening in van der Waals Heterostructures
Lu Hua Li, Tian Tian, Qiran Cai +2
Electric field screening plays an important role in the physical and chemical properties of materials and their devices. Here, we use a compelling set of theoretical and experiment…