Indiana University–Purdue University Indianapolis (IUPUI)

2 ARTICLES PUBLISHED IN JoVE

Engineering

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Jiaming Li¹, Leonardo F. de Melo¹, Le Luo¹

¹Department of Physics, Indiana University–Purdue University Indianapolis (IUPUI)

We present a parametric driving method to cool an ultracold Fermi gas in a crossed-beam optical dipole trap. This method selectively removes high-energy atoms from the trap by periodically modulating the trap depth with frequencies that are resonant with the anharmonic components of the trapping potential.

Environment

Composition and Distribution Analysis of Bioaerosols Under Different Environmental Conditions

Zhongyi Wang^*1, Jiaming Li^*2, Lu’an Qian^*3, Linna Liu¹, Jun Qian¹, Bing Lu¹, Zhendong Guo¹

¹Academy of Military Medical Sciences, ²Chinese Academy of Agricultural Sciences, ³The Experimental High School Attached to Beijing Normal University

Understanding the biological composition of environmental particulate matter is important for the study of its significant impacts on human health and disease spread. Here, we used three types of bioaerosol sampling methods and a biological analysis of airborne microbes to better explore airborne microbial communities under different environmental conditions.