The demand for compact ultraviolet laser devices is increasing, as they are essential in applications such as optical storage, photocatalysis, sterilization, ophthalmic surgery and nanosurgery. Many researchers are devoting considerable effort to finding materials with larger bandgaps than that of GaN. Here we show that hexagonal boron nitride (hBN) is a promising material for such laser device...

High-intensity femtosecond lasers have recently been used to irreversibly disrupt nanoscale structures, such as intracellular organelles, and to modify biological functions in a reversible manner: so-called nanosurgery and biophotomodulation. Femtosecond laser pulses above the threshold intensity sufficient for reversible biophotomodulation can cause irreversible changes in the irradiated cell,...

Inspired by the self-migration of microorganisms in nature, artificial micro- and nanomotors can mimic this fantastic behavior by converting chemical fuel or external energy into mechanical motion. These self-propelled micro- and nanomotors, designed either by top-down or bottom-up approaches, are able to achieve different applications, such as environmental remediation, sensing, cargo/sperm tr...

Correspondence to: Sadik Esener, [email protected]; Joseph Wang, [email protected]. †These authors contributed equally to this work. Supporting information for this article is available on the WWW under http://www.angewandte.org or from the author. NIH Public Access Author Manuscript Angew Chem Int Ed Engl. Author manuscript; available in PMC 2013 July 23. Published in final edited form as: An...

Astrocytes are known to respond various perturbations with oscillations of calcium, including cellular injury. Less is about astrocytes’ ability detect DNA/nuclear damage. This study looks at changes in calcium signaling response laser-induced nuclear damage using a NIR Ti:Sapphire laser. Primary astrocytes derived from genetically engineered mice expressing G6Campf encoded indicator were image...