17 citations · 80 across the 8 of their papers we have counts for
6 papers
What causes the ultraviolet extinction bump at the cosmic dawn?
Qi Li, Xuejuan Yang, Aigen Li
The enigmatic ultraviolet (UV) extinction bump at 2175 Angstrom, the strongest spectroscopic absorption feature superimposed on the interstellar extinction curve, has recently been…
Optical properties of elongated conducting grains
X. M. Huang, Qi Li, Aigen Li +3
Extremely elongated, conducting dust particles (also known as metallic "needles" or "whiskers") are seen in carbonaceous chondrites and in samples brought back from the Itokawa ast…
On the Absorption Properties of Metallic Needles
C. Y. Xiao, Qi Li, Aigen Li +1
Needle-like metallic particles have been suggested to explain a wide variety of astrophysical phenomena, ranging from the mid-infrared interstellar extinction to the thermalization…
On Carbon Nanotubes in the Interstellar Medium
Qi Li, Aigen Li, B. W. Jiang +1
Since their discovery in 1991, carbon nanotubes (CNTs) -- a novel one-dimensional carbon allotrope -- have attracted considerable interest worldwide because of their potential tech…
How Much Graphene in Space?
Qi Li, Aigen Li, B. W. Jiang
The possible presence of graphene in the interstellar medium (ISM) is examined by comparing the interstellar extinction curve with the ultraviolet absorption of graphene calculated…
Spectropolarimetric Constraints on the Nature of Interstellar Grains
Qi Li, S. L. Liang, Aigen Li
While it is well recognized that interstellar grains are made of amorphous silicates and some form of carbonaceous materials, it remains debated regarding what exact chemical and p…