Results 21 to 30 of about 888 (159)

Integrated self-referencing single shot digital holographic microscope and optical tweezer

Light: Advanced Manufacturing, 2022
Digital holographic microscopy is a single-shot technique for quantitative phase imaging of samples, yielding thickness profiles of phase objects. It provides sample features based on their morphology, leading to their classification and identification ...
Subhash Utadiya, Sachin Joshi, Nimit Patel, Chetna Patel, Mugdha Joglekar, Vani Cahhniwal, Timothy O’Connor, Bahram Javidi, Arun Anand   +8 more
doaj   +1 more source

Cell Mechanics in Cancer: Integrating Mechanotransduction Pathways Within the Tumor Microenvironment. [PDF]

J Cell Physiol
ABSTRACT Single‐cell mechanical properties such as stiffness, elasticity, and viscosity, are crucial in governing biological processes like migration, proliferation, and differentiation. In cancer, the mechanical properties of cells undergo significant alterations, which contribute to tumor growth, metastasis, and resistance to therapy.
Sevgi M, Işık Y, Karaca C, Çağlar E, Abdioğlu HB, Zendel F, Başbınar Y, Üvet H.   +7 more
europepmc   +2 more sources

Acousto-holographic optical tweezers

Optics Letters, 2020
Acousto-optic deflectors (AODs) allow the creation of multiple optical traps by time-sharing, that is, by rapidly cycling the laser focus between designated spatial locations. The traps thus formed are not permanent. In this Letter, we successfully demonstrate the creation of multiple and permanent traps by means of AODs driven by specially encoded ...
R. Bola, D. Treptow, A. Marzoa, M. Montes-Usategui, E. Martín-Badosa   +4 more
openaire   +5 more sources

Aberration correction in holographic optical tweezers [PDF]

Optics Express, 2006
Holographic or diffractive optical components are widely implemented using spatial light modulators within optical tweezers to form multiple, and/or modified traps. We show that by further modifying the hologram design to account for residual aberrations, the fidelity of the focused beams can be significantly improved, quantified by a spot sharpness ...
Wulff, Kurt D., Cole, Daniel G., Clark, Robert L., Di Leonardo, Roberto, Leach, Jonathan, Cooper, Jon, Gibson, Graham, Padgett, Miles J.   +7 more
openaire   +4 more sources

Marker-free cell discrimination by holographic optical tweezers [PDF]

Journal of the European Optical Society-Rapid Publications, 2009
We introduce a method for marker-free cell discrimination based on optical tweezers. Cancerous, non-cancerous, and drug-treated cells could be distinguished by measuring the trapping forces using holographic optical tweezers.
Schaal F., Warber M., Zwick S., van der Kuip H., Haist T., Osten W.   +5 more
doaj   +1 more source

Design of Multi-Cell Cooperative Control Algorithm Based on Fuzzy Brain Emotional Learning

Applied Sciences, 2022
Multi-cell cooperative control can be competent for the current increasingly complex biomedical experiments, greatly improving the efficiency of cell manipulation experiments.
Jing Zhao, Hui Hou, Peng-Sheng Zheng, Da-Han Wang, Yong-Kuan Yang   +4 more
doaj   +1 more source

A compact holographic optical tweezers instrument [PDF]

Review of Scientific Instruments, 2012
Holographic optical tweezers have found many applications including the construction of complex micron-scale 3D structures and the control of tools and probes for position, force, and viscosity measurement. We have developed a compact, stable, holographic optical tweezers instrument which can be easily transported and is compatible with a wide range of
Gibson, G.M., Bowman, R.W., Linnenberger, A., Dienerowitz, M., Phillips, David, Carberry, D.M., Miles, M.J., Padgett, M.J.   +7 more
openaire   +4 more sources

Toward transformable photonics: Reversible deforming soft cavities, controlling their resonance split and directional emission

APL Photonics, 2021
We report on reversible and continuously deformable soft micro-resonators and the control of their resonance split and directional emission.
Mark Douvidzon, Shai Maayani, Harel Nagar, Tamir Admon, Vladimir Shuvayev, Lan Yang, Lev Deych, Yael Roichman, Tal Carmon   +8 more
doaj   +1 more source

Trapping performance of holographic optical tweezers generated with different hologram algorithms

AIP Advances, 2021
Quantitative measurement of small forces and small displacement using holographic optical tweezers (HOTs) is finding increasing applications due to the features of non-contact and high accuracy manipulation. Although hologram optimization algorithms have
M. R. He, Y. S. Liang, P. R. Bianco, Z. J. Wang, X. Yun, Y. N. Cai, K. Feng, M. Lei   +7 more
doaj   +1 more source

Single-Cell Elasticity Measurement with an Optically Actuated Microrobot

Micromachines, 2020
A cell elasticity measurement method is introduced that uses polymer microtools actuated by holographic optical tweezers. The microtools were prepared with two-photon polymerization. Their shape enables the approach of the cells in any lateral direction.
István Grexa, Tamás Fekete, Judit Molnár, Kinga Molnár, Gaszton Vizsnyiczai, Pál Ormos, Lóránd Kelemen   +6 more
doaj   +1 more source