94 citations · 288 across the 10 of their papers we have counts for
5 papers · 1 filter
Bond-Selective Transient Phase Microscopy
Delong Zhang, Lu Lan, Yeran Bai +4
Phase-contrast microscopy converts the optical phase introduced by transparent, unlabeled specimens into modulation in the intensity image. Modern phase imaging techniques are capa…
Ultrafast Chemical Imaging by Widefield Photothermal Sensing of Infrared Absorption
Yeran Bai, Delong Zhang, Lu Lan +4
Infrared (IR) imaging has become a viable tool for visualizing various chemical bonds in a specimen. The performance, however, is limited in terms of spatial resolution and imaging…
Experimentally demonstrated an unidirectional electromagnetic cloak designed by topology optimization
Lu Lan, Fei Sun, Yichao Liu +2
Electromagnetic invisible devices usually designed by transformation optics are rather complicated in material parameters and not suitable for general applications. Recently a topo…
Three Dimensional Subwavelength focus by a near-field plate lens
Lu Lan, Wei Jiang, Yungui Ma
We implemented the inverse design method to build a thin near-field lens that could produce a desired subwavelength focus by manipulating the near fields of a magnetic dipole sourc…
First experimental demonstration of an isotropic electromagnetic cloak with strict conformal mapping
Yungui Ma, Yichao Liu, Lu Lan +4
In the past years quasi-conformal mapping has been typically used to design broadband electromagnetic cloaks. However, this technique has some inherit practical limitations such as…