Results 151 to 160 of about 2,361,376 (289)

Optical Forces on Dielectric Microparticles: Exploring Size, Refractive Index, and Surface Charge Dependencies

Advanced Photonics Research
Optical tweezers enable noninvasive manipulation of microscopic objects through piconewton‐scale optical forces generated by a tightly focused laser beam. Trapping efficiency is known to depend strongly on particle size and refractive index, although the
Ana Dávila, Lucía Labrador‐Páez, Manuel I. Marqués, Patricia Haro‐González   +3 more
doaj   +1 more source

Fano Resonance-Assisted All-Dielectric Array for Enhanced Near-Field Optical Trapping of Nanoparticles. [PDF]

ACS Photonics, 2023
Conteduca D, Khan SN, Martínez Ruiz MA, Bruce GD, Krauss TF, Dholakia K.   +5 more
europepmc   +1 more source

Structure‐Guided Balancing of Ambipolar Transport Enables Symmetric Switching in Heterojunction Bilayer Organic Transistor Inverters

Advanced Functional Materials, EarlyView.
Balancing the spatially separated p‐ and n‐type transport pathways in heterojunction‐bilayer OTFTs enables symmetric inverter switching (VM ≈ 0.5VDD), whereas discrete integration of unipolar OTFTs gives polarity‐dependent and resistive responses. ABSTRACT High inverter performance in ambipolar organic electronics requires balanced channel strengths ...
Sohyun Choi, Young Yong Kim, Ji Ho Youk, Hoichang Yang   +3 more
wiley   +1 more source

Optical trapping with holographically structured light for single-cell studies. [PDF]

Biophys Rev (Melville), 2023
Lee M, Hugonnet H, Lee MJ, Cho Y, Park Y.   +4 more
europepmc   +1 more source

An Adaptive Inhibitory WSe2 Transistor for Retinomorphic In‐Sensor Image Processing

Advanced Functional Materials, EarlyView.
Conventional retinomorphic devices typically require deliberate gate‐bias tuning for each illumination condition. In this paper, we demonstrate an adaptive inhibitory WSe2 transistor that uses photo‐induced regime shift between the subthreshold and accumulation modes to achieve decision‐free, intensity‐adaptive image processing within a single pixel ...
Juhwan Baek, Junhwa Oh, Hyeonjung Kim, Minsik Park, Haein Cho, Jin Young Park, Hyeonchang Son, Taeyun Kim, Sung‐Un An, Yamin Zhang, Hyeon‐Jin Shin, Seyong Oh, Dong‐Ho Kang   +12 more
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  

Forward‐Biased Perovskite Photodiodes for In‐Sensor Optical Change Sensing

Advanced Functional Materials, EarlyView.
A forward‐biased perovskite photodiode is introduced as an in‐sensor analog preprocessing unit that uses current balancing between photocurrent and injection current to generate optical changes relative to programmable optical reference levels. The device directly converts reference‐relative optical changes into bipolar current signals, enabling sensor‐
Eungseon Yeon, Je‐Jun Lee, Somin Yun, Sangin Hahn, Chanhyeok Kim, Jinsoo Park, Jung Pyo Hong, Seong‐Jun Han, Jung Woo Kim, Jeong Hwan Lee, Subin Jeon, Youngmin Kim, Gunuk Wang, Hanul Min, Do Kyung Hwang   +14 more
wiley   +1 more source

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

Blue Upconversion Organic Light‐Emitting Diodes Achieving 1000 cd m−2 With an Operating Voltage of 2.7 V by Suppressing Interfacial Exciton Quenching

Advanced Functional Materials, EarlyView.
A triplet‐blocking layer controls triplet exciton dynamics in blue upconversion OLEDs. The layer keeps charge transfer (CT)‐generated triplet excitons inside the triplet‐triplet annihilation (TTA) host, suppresses anode‐side interfacial quenching, and increases the steady‐state triplet population.
Qing‐Jun Shui, Hiroto Iwasaki, Kosuke Anraku, Ken Albrecht, Yutaka Majima, Seiichiro Izawa   +5 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