Results 151 to 160 of about 192,487 (281)

Establishing a Model Precursor System: Over a Decade of Research on Carbon Dots from the Citric Acid‐Urea System

Advanced Functional Materials, EarlyView.
The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu, Zhiqi Cai, Xiangxin Sun, Hanyi Zhang, Yiming Hao, Jun Wu, Zekun Yan, Xue Wu, Yiqi Liang, Liming Wang, Songnan Qu   +10 more
wiley   +1 more source

Modelling red blood cell optical trapping by machine learning improved geometrical optics calculations. [PDF]

Biomed Opt Express, 2023
Tognato R, Bronte Ciriza D, Maragò OM, Jones PH.   +3 more
europepmc   +1 more source

Statistically Resolving Thickness‐Dependent Electrical Characteristics in Multilayer‐MoS2 Transistors

Advanced Functional Materials, EarlyView.
A large number of MoS2 flakes were screened to obtain high‐quality flakes based on optical intensities in R, G, and B channel images. The flakes were classified from Level 1 to 6 based on optical intensities in the R, G, and B channel images. Low‐quality flake exhibited wrinkled, folded, or overlapped features, while high‐quality displayed a neat ...
Sanghyun Lee, Sumin Hong, Minho Park, Seongju Kim, Sanghoon Baek, Seonguk Yang, Chang‐Soo Lee, Sang‐Hoon Bae, Joonki Suh, Yongwoo Lee, Haksoon Jung, Jimin Kwon   +11 more
wiley   +1 more source

Nanodiamond Quantum Sensors for Probing Free Radical Biology

Advanced Functional Materials, EarlyView.
Free radicals play key roles in cellular signaling and disease but remain difficult to measure in living systems. Nanodiamonds (NDs) with nitrogen‐vacancy (NV) centers enable quantum sensing of local magnetic noise via T₁ relaxometry, providing nondestructive radical detection in living cells.
Qi Lu, Yingke Wu, Tanja Weil
wiley   +1 more source

Accurate measurement of microscopic forces and torques using optical tweezers

South African Journal of Science, 2011
It is now well known that matter may be trapped by optical fields with high intensity gradients. Once trapped, it is then possible to manipulate microscopic particles using such optical fields, in so-called optical tweezers.
Melanie McLaren, Elias Sidderas-Haddad, Andrew Forbes   +2 more
doaj  

Effect of two-photon absorption on trapping of plasmonic nanoparticles

Scientific Reports
In this paper, we introduce a theoretical framework for optical trapping that integrates nonlinear polarization within the dipole approximation. This theory represents the most comprehensive analytic model to date capable of resolving the discrepancies ...
S. Mirzaei-Ghormish, K. Qaderi, D. Smalley   +2 more
doaj   +1 more source

Optofluidic Particle Manipulation: Optical Trapping in a Thin-Membrane Microchannel. [PDF]

Biosensors (Basel), 2022
Walker ZJ, Wells T, Belliston E, Walker SB, Zeller C, Sampad MJN, Saiduzzaman SM, Schmidt H, Hawkins AR.   +8 more
europepmc   +1 more source

The Role of Ultra‐Thin Buffer Layers for Achieving Ultra‐Low Dark Currents in Single‐Component Organic Photodetectors

Advanced Functional Materials, EarlyView.
Here, SubNc single‐component organic photodiodes (SC‐OPDs) are investigated, which achieve highly competitive performance metrics, including high EQE, ultra‐low JD, and high specific detectivity (D*). This study emphasizes the critical role of an organic buffer layer in studying the interface energetics and effects to achieve state‐of‐the‐art ...
Anncharlott Kusber, Ying Sun, Jakob Wolansky, Louis Conrad Winkler, Anna‐Lena Hofmann, Fred Kretschmer, Hrisheekesh Thachoth Chandran, Tianyi Zhang, Mike Hambsch, Stefan C. B. Mannsfeld, Karl Leo, Ji‐Seon Kim, Johannes Benduhn   +12 more
wiley   +1 more source

Optical twin-vortex multi-trapping by Kolakoski lenses

Scientific Reports
In this work, we design and implement a new bifocal diffractive spiral lens within an optical tweezers system. The proposed diffractive optical element coined Kolokaski Kinoform Spiral Lens (KKSL), generates twin optical vortices along the propagation ...
Arlen B. Perez-Hernández, Adrián Garmendía-Martínez, Walter D. Furlan, Juan C. Castro-Palacio, Juan A. Monsoriu, Francisco M. Muñoz-Pérez   +5 more
doaj   +1 more source

Unravelling 3D Dynamics and Hydrodynamics during Incorporation of Dielectric Particles to an Optical Trapping Site. [PDF]

ACS Nano, 2023
Louis B, Huang CH, Camacho R, Scheblykin IG, Sugiyama T, Kudo T, Melendez M, Delgado-Buscalioni R, Masuhara H, Hofkens J, Bresoli-Obach R.   +10 more
europepmc   +1 more source