Results 71 to 80 of about 1,271,300 (239)

Femtosecond laser treatment enhances DNA transfection efficiency in vivo

Journal of Biomedical Science, 2009
Background Gene therapy with plasmid DNA is emerging as a promising strategy for the treatment of many diseases. One of the major obstacles to such therapy is the poor transfection efficiency of DNA in vivo. Methods In this report, we employed a very low
Hung Chien-Fu, Pai Sara I, Meneshian Avedis, Wu Chao-Yi, Tsen Shaw-Wei D, Wu T-C   +5 more
doaj   +1 more source

Disentangling Polaron Formation Pathways in Y6 by Probing Noninteracting and Interacting Chromophores via Transient Absorption Spectroscopy

Advanced Materials, EarlyView.
The central role of both electronically interacting and noninteracting chromophores in the photogeneration of charges has been unambiguously identified by ultrafast pump‐probe spectroscopy in thin films of the prototypical non‐fullerene acceptor Y6. Onsager‐like autoionization from higher‐energy excitations on Y6 aggregates is found to control polaron ...
Daniel Kroh, Xinyue Xu, Trevor A. Smith, Anna Köhler   +3 more
wiley   +1 more source

Monolithically 3D‐Printed Spectral‐Spatial Meta‐Authenticators

Advanced Materials, EarlyView.
A single height map printed in a low‐index resin by two‐photon lithography encodes multiple visible wavelengths in one metasurface without any polarization optics. A fabrication‐aware optimization folds the printable height levels into the design, so the device is printed as optimized.
Cherry Park, Shiqi Hu, Youngsun Jeon, Junsuk Rho   +3 more
wiley   +1 more source

Comparative study of ablation processes using femtosecond and nanosecond lasers

Results in Physics
This study investigated the dynamic characteristics of ions emitted from materials subjected to short-pulsed laser interactions. To investigate the difference in ablation dynamics due to laser pulse irradiation with the same energy but different time ...
J.Z. Wang, Y. Kanematsu, A. Muratsugu, F. Matsuda, W. Matsuda, Y. Kawai, M. Toyoda   +6 more
doaj   +1 more source

Epithelial downgrowth after femtosecond laser-assisted cataract surgery

American Journal of Ophthalmology Case Reports, 2019
Purpose: To present the case of a 72-year-old female with epithelial downgrowth after femtosecond laser-assisted cataract surgery. Observations: The patient previously underwent YAG vitreolysis after uncomplicated femtosecond laser-assisted cataract ...
Han Kim, Michele C. Lim, Mark J. Mannis, Esther S. Kim   +3 more
doaj   +1 more source

Laser-induced forward transfer of focussed ion beam pre-machined donors

, 2011
In this paper we report femtosecond laser-induced forward transfer (LIFT) of pre-machined donor films. 1 µm thick zinc oxide (ZnO) films were first machined using the focussed ion beam (FIB) technique up to a depth of 0.8 µm. Debris-free micro-pellets of
Banks, D.P., Sones, C.L., Ou, J-Y., E. Verona, F. Di Pietrantonio, R.W. Eason, M. Feinaeugle, D.P. Banks, J.Y. Ou, C.L. Sones, Di Pietrantonio, F., Feinäugle, M., Kaur, K.S., K.S. Kaur, Verona, E., Eason, R.W.   +15 more
core   +1 more source

Femtosecond optoinjection of intact tobacco BY-2 cells using a reconfigurable photoporation platform [PDF]

, 2013
A tightly-focused ultrashort pulsed laser beam incident upon a cell membrane has previously been shown to transiently increase cell membrane permeability while maintaining the viability of the cell, a technique known as photoporation.
Torrance Lesley, Gunn-Moore Frank J., Tomás Cizmár, Alison G. Roberts (484836), Lesley Torrance, Roberts Alison G., Lesley Torrance (315753), Heisterkamp, Alexander, Claire A. Mitchell, Gunn-Moore, Frank J., Torrance, Lesley, Dholakia, Kishan, Frank J Gunn-Moore, Dholakia, K., Kishan Dholakia, Gunn-Moore, F.J., Cizmár, T., Alison G. Roberts, Cizmar, Tomas, Stefan Kalies (388164), Heisterkamp Alexander, Heisterkamp, A., Dholakia Kishan, Er Heisterkamp, Kalies Stefan, Kalies, Stefan, Roberts, Alison G., Stefan Kalies, Cizmár Tomás, Mitchell, C.A., Alison G Roberts, Roberts, A.G., Kalies, S., Tomás Cizmár (484835), Claire A Mitchell, Kishan Dholakia (426528), Torrance, L., Alexander Heisterkamp (150235), Frank J. Gunn-moore, Claire A. Mitchell (484834), Frank J. Gunn-Moore (400582), Alexander Heisterkamp, Mitchell, Claire A., Mitchell Claire A., Gunn-Moore, F.J.; id_orcid   +44 more
core   +2 more sources

Large‐Scale and Cost‐Effective Fabrication of Ultra‐Thin, Biodegradable Microelectrode Arrays and Pressure Sensors Using Laser Micromachining

Advanced Materials Technologies, EarlyView.
A mask‐free and cost‐effective UV‐pico‐second laser‐based microfabrication method is proposed to fabricate large‐area biodegradable microelectrode arrays and pressure sensors. These devices demonstrate low impedance, good conformability, excellent biocompatibility, and rapid degradation, providing a new route for next‐generation transient electronics ...
Bhavani Prasad Yalagala, Asfand Tanwear, María Cerezo‐Sánchez, Hossein Parvizi, Morteza Amjadi, Hadi Heidari   +5 more
wiley   +1 more source

Femtosecond Laser Fabrication of Wettability-Functional Surfaces: A Review of Materials, Structures, Processing, and Applications

Nanomaterials
Wettability-functional surfaces are crucial in both theoretical investigation and engineering applications. Compared to traditional micro/nano fabrication methods (such as ion etching, sol–gel, chemical vapor deposition, template techniques, and self ...
Zelin Chen, Jiantao Zhou, Wenyang Cen, Yinzhou Yan, Wei Guo   +4 more
doaj   +1 more source

3D Printed Photon Shield Assembly for Low‐Noise Visual Stimulation During Two‐Photon Imaging in Mice

Advanced Materials Technologies, EarlyView.
We present the Photon Shield, an open‐hardware system for low‐noise two‐photon calcium imaging during visual stimulation in mice. Combining a 3D‐printed headplate and rail‐mounted shield substantially reduces stray‐light contamination, as quantitatively verified. Functional validation confirms reliable cortical responses. Open design files enable broad
Gergely Katona, Andrea Slézia, András Dávid, Ábel Petik, Dániel Hillier, István Ulbert, Attila Kaszás   +6 more
wiley   +1 more source