35 citations · 97 across the 11 of their papers we have counts for
11 papers
Ultrafast light-sheet optical tweezers for in situ parallelized biomechanical characterization of cells and soft tissues
Krishangi Krishna, Gannon Lemaster, Jieyi Xu +8
Quantitative characterization of the mechanical properties of cells and tissues is essential for understanding disease progression and tissue regeneration. Optical tweezers (OT) en…
Selective Tweezing and Immobilization of Colloids for Dexterous Manipulation of Biological Materials
Krishangi Krishna, Jieliyue Sun, Zhaowei Jiang +3
The assembly of arbitrary 3D structures using nano- to micron-scale colloidal building blocks has broad applications in photonics, electronics, and biology. Combining optical tweez…
Harnessing ultrafast optical pulses for 3D microfabrication by selective tweezing and immobilization of colloidal particles in an integrated system
Krishangi Krishna, Jieliyue Sun, Wenyu Liu +2
Microfabrication using nano- to micron-sized building blocks holds great potential for applications in next-generation electronics, optoelectronics, and advanced materials. However…
Smartphone tristimulus colorimetry for skin-tone analysis at common pulse oximetry anatomical sites
Joshua A. Burrow, Rutendo Jakachira, Gannon Lemaster +1
Significance: Smartphones hold great potential in point-of-care settings due to their accessibility and computational capabilities. This is critical as clinicians increasingly seek…
Femtosecond laser-assisted selective holding with ultra-low power for direct manipulation of biological specimens
Krishangi Krishna, Joshua A. Burrow, Zhaowei Jiang +3
Traditional optical tweezers techniques often rely on high-power continuous wave (CW) lasers, which can introduce unwanted thermal effects and photodamage to delicate samples. To o…
Realization of high-dynamic-range broadband magnetic-field sensing with ensemble nitrogen-vacancy centers in diamond
Cao Wang, Qihui Liu, Yuqiang Hu +9
We present a new magnetometry method integrating an ensemble of nitrogen-vacancy (NV) centers in a single-crystal diamond with an extended dynamic range for monitoring the fast cha…
Excitation of Surface Plasmon Polaritons by Diffraction-Free and Vector Beams
Mbaye Diouf, Joshua A. Burrow, Krishangi Krishna +3
Surface plasmon polaritons (SPPs) are traditionally excited by plane waves within the Rayleigh range of a focused transverse magnetic (TM) Gaussian beam. Here, we investigate and c…
Nonlinear focal modulation microscopy
Guangyuan Zhao, Cheng Zheng, Cuifang Kuang +8
Here we report nonlinear focal modulation microscopy (NFOMM) to achieve super-resolution imaging. Abandoning the previous persistence on minimizing the size of Gaussian emission pa…
Demonstration of an optical-coherence converter
Chukwuemeka O. Okoro, H. Esat Kondakci, Ayman F. Abouraddy +1
Studying the coherence of an optical field is typically compartmentalized with respect to its different optical degrees of freedom (DoFs) -- spatial, temporal, and polarization. Al…
Saturated absorption competition microscopy
Guangyuan Zhao, Mohammad M Kabir, Kimani C. Toussaint +4
We introduce the concept of saturated absorption competition (SAC) microscopy as a means of providing sub-diffraction spatial resolution in fluorescence imaging. Unlike the post-co…
Ellipsometric measurements by use of photon pairs generated by spontaneous parametric down-conversion
Ayman F. Abouraddy, Kimani C. Toussaint, Alexander V. Sergienko +2
We present a novel interferometric technique for performing ellipsometric measurements. This technique relies on the use of a non-classical optical source, namely, polarization-ent…