Results 91 to 100 of about 4,302 (205)

Advanced Contactless Bioassembly Approaches: Leveraging Sound, Optical, and Magnetic Fields

Advanced NanoBiomed Research, Volume 5, Issue 9, September 2025.
This review explores innovative contactless bioassembly techniques driven by sound, light, and magnetic fields, which enable the precise organization of cells, biomaterials, and bioactive substances into complex 3D structures. These technologies, crucial for in vitro modeling and regenerative medicine, are examined in detail, highlighting their ...
Micaela Natta, Greta Cocchi, Riccardo Tognato, Alessandro Cianciosi, Tiziano Serra   +4 more
wiley   +1 more source

Above and beyond: holographic tracking of axial displacements in holographic optical tweezers

Optics Express, 2019
How far a particle moves along the optical axis in a holographic optical trap is not simply dictated by the programmed motion of the trap, but rather depends on an interplay of the trap's changing shape and the particle's material properties. For the particular case of colloidal spheres in optical tweezers, holographic video microscopy reveals that ...
Michael J. O’Brien, David G. Grier
openaire   +3 more sources

Fabrication of functional micro–nano structures using phase holographically modulated femtosecond laser technology: a review

Nanophotonics, Volume 14, Issue 19, Page 3095-3114, September 2025.
Abstract Micro–nano fabrication technology is critical to high‐end fabrication, bridging the gap between microscopic and macroscopic scales. Femtosecond laser fabrication, owing to its ultrafast nonlinear effects and three‐dimensional direct writing capabilities, has demonstrated unique advantages in the fabrication of functional micro–nano structures.
Yang Liu, Jie Wang, Zhipeng Wang, Ji Huang, Xuejiao Wang, Jingjing Zhang, Zijie Dai, Yunxia Ye   +7 more
wiley   +1 more source

Transparent and Transient Flexible Electronics

Advanced Science, Volume 12, Issue 31, August 21, 2025.
Transparent electronics has gained tremendous attention in recent years because of the growing demand for see‐through devices in applications such as displays, windscreens, and wearables. This review discusses the recent developments related to transparent electronics as well as the challenges associated with the development of flexible and transient ...
Nitheesh M. Nair, Ayoub Zumeit, Ravinder Dahiya   +2 more
wiley   +1 more source

Independent polarisation control of multiple optical traps [PDF]

, 2008
We present a system which uses a single spatial light modulator to control the spin angular momentum of multiple optical traps. These traps may be independently controlled both in terms of spatial location and in terms of their spin angular momentum ...
Allen, Ashkin, Bingelyte, Bishop, Daryl Preece, Dufresne, Elliot Botvinick, Friese, Grier, He, Jesacher, Jonathan Leach, Knoner, Knoner, Ladavac, Leach, Leach, Leach, Liesener, Maurer, Miles Padgett, O’Neil, Padgett, Paterson, Richard Bowman, Roichman, Sato, Scrimgeour, Sinclair, Stephen Keen, Visscher   +30 more
core   +1 more source

Characterizing and tracking single colloidal particles with video holographic microscopy

, 2007
We use digital holographic microscopy and Mie scattering theory to simultaneously characterize and track individual colloidal particles. Each holographic snapshot provides enough information to measure a colloidal sphere's radius and refractive index to ...
Grier, David G., Kim, Shin-Hyun, Lee, Sang-Hyuk, Roichman, Yohai, van Blaaderen, Alfons, van Oostrum, Peter, Yang, Seung-Man, Yi, Gi-Ra   +7 more
core   +1 more source

Constructing 3D crystal templates for photonic band gap materials using holographic optical tweezers [PDF]

, 2008
A simple and robust method is presented for the construction of 3-dimensional crystals from silica and polystyrene microspheres. The crystals are suitable for use as templates in the production of three-dimensional photonic band gap (PBG) materials ...
Agarwal, Braun, Busch, Cosgrove, Curtis, D.C. Benito, D.M. Carberry, Erenso, Frandsen, G.M. Gibson, Garcia-Santamaria, Gibson, J.G. Rarity, Jenkins, Jordan, Leach, Lin, M.J. Miles, M.J. Padgett, Park, Rinne, Roichman, S. Hanna, S.H. Simpson, Sinclair, Tavacoli, Tetreault, Whyte, Woldeyohannes, Wu, Yablonovitch, Yanik   +31 more
core   +1 more source

Real-time optical micro-manipulation using optimized holograms generated on the GPU

, 2010
Holographic optical tweezers allow the three dimensional, dynamic, multipoint manipulation of micron sized dielectric objects. Exploiting the massive parallel architecture of modern GPUs we can generate highly optimized holograms at video frame rate ...
Ahrenberg, Ashkin, Cheong, Curtis, Di Leonardo, Dufresne, Egri, Elsen, Grier, Leach, Lesem, Liesener, Liu, Masuda, Pleguezuelos, Preece, Preis, R. Di Leonardo, Reicherter, Reicherter, S. Bianchi, Shimobaba, Visscher   +22 more
core   +1 more source

Red Blood Cell-Based Biological Micromotors Propelled by Spiral Optical Fields

Photonics
Micromotors play a crucial role in microsystems technology, with applications in nanoparticle propulsion, targeted drug delivery, and biosensing. Optical field propulsion, particularly optical tweezers (OTs), enables precise, noncontact control but ...
Kunpeng Wang, Zhelin Qu, Yifei Chen, Tianli Wu, Chao Feng, Jian Zhang, Xian Zhao, Jun-Lei Wang   +7 more
doaj   +1 more source

Holographic Imaging Reveals the Mechanism of Wall Entrapment in Swimming Bacteria

Physical Review X, 2017
Self-propelled particles, both biological and synthetic, are stably trapped by walls and develop high concentration peaks over bounding surfaces. In swimming bacteria, like E. coli, the physical mechanism behind wall entrapment is an intricate mixture of
Silvio Bianchi, Filippo Saglimbeni, Roberto Di Leonardo   +2 more
doaj   +1 more source