Review
Pharmacology & Pharmacy
Teresa L. Rapp, Cole A. DeForest
Summary: This article discusses the unique power of light as a tool for controlling molecular events in biology and highlights recent innovations in photosensitive drug delivery. It also points out future opportunities to engineer and exploit light-responsive technologies in the clinical setting.
ADVANCED DRUG DELIVERY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Rui Sun, Chuanfu Cheng, Ruirui Zhang, Xiangyu Zeng, Yu Zhang, Manna Gu, Chunxiang Liu, Hong Ma, Qian Kong, Chen Cheng
Summary: By designing spatially multiplexing metasurfaces with multiple sets of periodic nanoslits, it is possible to generate and focus vector fields of different circular polarized light in the light field. This allows for the acquisition of trefoil and cinquefoil vector light fields, expanding the applications of metasurfaces in areas such as vector beam generation and topology of light field.
Article
Chemistry, Physical
Philipp N. Plessow, Charles T. Campbell
Summary: The study examines the impact of adhesion on the chemical potential of supported nanoparticles, showing that the chemical potential is influenced by adhesion energy and particle volume. The use of hemispherical particle shape provides a good approximation for the chemical potential, with an error of less than 10% for contact angles between 66 and 120 degrees.
Article
Optics
Stefan Berg-Johansen, Martin Neugebauer, Andrea Aiello, Gerd Leuchs, Peter Banzer, Christoph Marquardt
Summary: Vector beams have been shown to be utilized for fast kinematic sensing through measurements of their global polarization state. The method relies on correlations between the spatial and polarization degrees of freedom of the illuminating field, and has been extended to the nonparaxial regime, demonstrating position sensing of Mie particles in three dimensions. This work highlights the potential of polarization analysis in optical tweezers employing structured light.
Article
Engineering, Aerospace
Nina Sarah Muehlich, Joachim Gerger, Bernhard Seifert, Friedrich Aumayr
Summary: The requirements for electric propulsion systems for scientific missions are becoming stricter, leading to the development of a modular electrostatic lens module. Experimental results show that this module improves thrust and specific impulse, and reduces beam divergence and thrust vector deviation.
Article
Optics
Yanxiang Zhang, Xiaofei Liu, Han Lin, Dan Wang, Ensi Cao, Shaoding Liu, Zhongquan Nie, Baohua Jia
Summary: This study proposes a new method for ultrafast modulation of multi-target focal fields based on the combination of time-dependent vectorial diffraction theory and fast Fourier transform. By focusing femtosecond pulsed light carrying vectorial-vortex, the importance of ultrafast temporal degree of freedom in determining the characteristics of the focused optical field is revealed, along with the underlying control mechanisms. The results of this study have wide-ranging applications in fields such as multifunctional integrated optical chips, high-efficiency laser trapping, and super-resolution optical microscopy.
OPTO-ELECTRONIC ADVANCES
(2022)
Article
Physics, Applied
Yuuki Uesugi, Yuichi Kozawa, Shunichi Sato
Summary: Free electrons in an optical standing wave field experience the ponderomotive potential, serving as a refractive-index medium in electron optics. This study demonstrates the divergence and convergence forces provided by tightly focused cylindrically polarized light beams, leading to the creation of concave and convex electron round lenses at the focal point. The convex lens formed by azimuthally polarized beams exhibits negative spherical aberration, differing from conventional electron round lenses created by electrodes and magnetic coils.
PHYSICAL REVIEW APPLIED
(2021)
Article
Physics, Applied
Pavel Galar, Jiri Stuchlik, Martin Muller, Jan Kocka, Katerina Kusova
Summary: In this study, highly spherical SiC nanocrystals (50-150 nm) were successfully synthesized using nonthermal plasma, a method not widely employed for SiC synthesis. The Si nanocrystals act as growth seeds for SiC in a two-stage reactor, resulting in SiC nanoparticles with yellow-orange photoluminescence visible to the naked eye.
PLASMA PROCESSES AND POLYMERS
(2022)
Article
Nanoscience & Nanotechnology
Xiaofei Wu, Raphael Ehehalt, Gary Razinskas, Thorsten Feichtner, Jin Qin, Bert Hecht
Summary: Researchers have successfully demonstrated the remote control of microscopic robots in two dimensions in all three degrees of freedom using unfocused light and plasmonic nanoantennas. This breakthrough has potential applications in transport, manipulation, and sensing of nano and mesoscale objects.
NATURE NANOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Liang Sun, Zhinan Fu, Enguang Ma, Jiangtao Guo, Ziyu Zhang, Wenxin Li, Li Li, Zhiyong Liu, Xuhong Guo
Summary: SPB-stabilized ultrasmall Pt NPs exhibited outstanding peroxidase-like activity and were used to establish a colorimetric sensor for cysteine detection.
Article
Chemistry, Analytical
Francesco Ruffino
Summary: Bimetallic nanoparticles exhibit unique properties for various technological applications, particularly in terms of optical properties and their interaction with electromagnetic radiation. The core-shell structure significantly affects the optical properties of these nanoparticles.
Article
Acoustics
Lauren Katch, Andrea P. Arguelles
Summary: In this article, a modified focusing equation is proposed for normal and oblique incidence through a fluid-solid interface. The modification allows for a closer approximation to the geometric focus compared to the conventional equation.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2022)
Article
Cell Biology
Horacio Merchant-Larios, David M. Giraldo-Gomez, Adriana Castro-Dominguez, Alejandro Marmolejo-Valencia
Summary: In this study, a new workflow is proposed that combines modified sample protocol of traditional transmission electron microscope with FIB-SEM volume imaging, enabling efficient 3D structural surveys of rabbit ovaries at consecutive developmental stages. The precise trimming of the region of interest adds a time dimension to the volume, constructing a virtual 4D electron microscopy. Filopodia-like processes emitted by oocyte cysts allowing contact between oocytes not previously observed were discovered.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Evgeny Mikheev, Tino Zimmerling, Amelia Estry, Philip J. W. Moll, David Goldhaber-Gordon
Summary: In this work, two previously incompatible techniques are combined to define electronic devices. By using focused ion beam (FIB) to shape three-dimensional crystals and two-dimensional electrostatic accumulation of charge carriers, a sacrificial protective layer is used to preserve the surface quality. The accumulation of charge carriers using ionic liquid gating demonstrates the superconductivity of the accumulated carriers, and this technique opens new possibilities for electrostatic charge tuning in materials.
Article
Materials Science, Multidisciplinary
JinPing Zhang, Jiagui Wu, Huan Yuan, Zehao Wang, Yang Deng, Zhenfu Zhang, Guiling Lin, Junbo Yang
Summary: This study presents a metalens array designed to convert circularly polarized light into a vortex beam and focus it, based on computer-generated holography technology. The conversion efficiency of the metalens array exceeds 80% at wavelengths of 420 nm, 550 nm, and 660 nm, with the aim of widespread applications in optical photography and optical communication systems.
RESULTS IN PHYSICS
(2021)
Article
Physics, Applied
Kuersat Sendur, William Challener
APPLIED PHYSICS LETTERS
(2009)
Article
Engineering, Electrical & Electronic
Michael A. Seigler, William A. Challener, Edward Gage, Nils Gokemeijer, Ganping Ju, Bin Lu, Kalman Pelhos, Chubing Peng, Robert E. Rottmayer, Xiaomin Yang, Hua Zhou, Tim Rausch
IEEE TRANSACTIONS ON MAGNETICS
(2008)
Article
Engineering, Electrical & Electronic
Chubing Peng, William A. Challener, Amit Itagi, Mike Seigler, Edward C. Gage
IEEE TRANSACTIONS ON MAGNETICS
(2012)
Editorial Material
Optics
David Pile, William Challener, Ed Gage, Mark Re
Correction
Optics
W. A. Challener, Chubing Peng, A. V. Itagi, D. Karns, Wei Peng, Yingguo Peng, XiaoMin Yang, Xiaobin Zhu, N. J. Gokemeijer, Y. -T. Hsia, G. Ju, Robert E. Rottmayer, Michael A. Seigler, E. C. Gage
Article
Optics
W. A. Challener, Chubing Peng, A. V. Itagi, D. Karns, Wei Peng, Yingguo Peng, XiaoMin Yang, Xiaobin Zhu, N. J. Gokemeijer, Y. -T. Hsia, G. Ju, Robert E. Rottmayer, Michael A. Seigler, E. C. Gage
Review
Engineering, Electrical & Electronic
Mark H. Kryder, Edward C. Gage, Terry W. Mcdaniel, William A. Challener, Robert E. Rottmayer, Ganping Ju, Yiao-Tee Hsia, M. Fatih Erden
PROCEEDINGS OF THE IEEE
(2008)
Article
Engineering, Electrical & Electronic
William A. Challener, Ansas M. Kasten, Mengli Wang, David Lin, Sergei Zotov, Russell Craddock, Marco Aimi
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
(2020)
Article
Engineering, Electrical & Electronic
William A. Challener, Ansas M. Kasten, Fei Yu, Gabriel Puc, Brian J. Mangan
Summary: This study introduces a technique for measuring the flow and diffusion rates of trace gases in atmosphere through hollow core fiber (HCF) using tunable diode laser absorption spectroscopy (TDLAS). The results show that simple equations can be used to measure diffusion and pressure-induced flow through the fiber end faces, and the data are in excellent agreement with the theory. Additionally, it is found that highly sensitive trace gas concentration measurements can be achieved using short lengths of HCF filled with external gas samples within minutes or even seconds, which is critical for remote trace gas sensing.
IEEE SENSORS JOURNAL
(2021)
Proceedings Paper
Instruments & Instrumentation
W. A. Challener, Matthias A. Kasten, Jason Karp, Niloy Choudhury
PHOTONIC INSTRUMENTATION ENGINEERING V
(2018)
Article
Materials Science, Multidisciplinary
William A. Challener, Ansas M. Kasten, Sachin Dekate, Dimitri Dylov, Reza Ghandi, Renato Guida, S. M. Hasan, Thaddeus Czauski, Russell Craddock, Roger Jones
Proceedings Paper
Optics
Jason Karp, William Challener, Matthias Kasten, Niloy Choudhury, Sabarni Palit, Gary Pickrell, Daniel Homa, Adam Floyd, Yujie Cheng, Fei Yu, Jonathan Knight
FIBER OPTIC SENSORS AND APPLICATIONS XIII
(2016)
Proceedings Paper
Engineering, Electrical & Electronic
William Challener, Sabarni Palit, Roger Jones, Li Airey, Russell Craddock, Aaron Knobloch
MOEMS AND MINIATURIZED SYSTEMS XII
(2013)
Article
Physics, Applied
T Rausch, C Mihalcea, K Pelhos, D Karns, K Mountfield, YA Kubota, XW Wu, GP Ju, WA Challener, CB Peng, L Li, YT Hsia, EC Gage
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS
(2006)
