ChemInform Abstract: Molybdenum Pentachloride. A Multifaceted Reagent for Efficient Coupling of Aromatics

ChemInform ◽  
2015 ◽  
Vol 46 (4) ◽  
pp. no-no
Author(s):  
S. Trosien ◽  
S. R. Waldvogel
Keyword(s):  
Molybdenum Pentachloride ◽  
Efficient Coupling

Single-electron sensitivity with a lens-coupled CCD camera

1993 ◽  
Vol 51 ◽  
pp. 642-643
Author(s):  
G.Y. Fan ◽  
Bruce Mrosko ◽  
Mark H. Ellisman
Keyword(s):  
Focal Length ◽  
Thick Layer ◽  
Ccd Camera ◽  
Single Electron ◽  
Bottom Flange ◽  
X Rays ◽  
Red Phosphor ◽  
Ccd Detector ◽  
Lens Assembly ◽  
Efficient Coupling

A lens coupled CCD camera showing single electron sensitivity has been built for TEM applications. The design is illustrated in Fig. 1. The bottom flange of a JEM-4000EX microscope is replaced by a special flange which carries a large rectangular leaded glass window, 22 mm thick. A 20 μm thick layer of red phosphor is coated on the window, and the entire window is sputter-coated with a thin layer of Au/Pt. A two-lens relay system is used to provide efficient coupling between the image on the phosphor scintillator and the CCD imager. An f1.0 lens (Goerz optical) with front focal length 71.6 mm is used as the collector. A mirror prism, of the Amici type, is used to "bend" the optical path by 90° to prevent X-rays which may penetrate the leaded glass from hitting the CCD detector. Images may be relayed directly to the camera (1:1) or demagnified by a factor of up to 3:1 by moving the lens assembly.

Mild Temperature Copper-Catalyzed Amination of Aryl Halides with Aqueous Ammonia in the Presence of Pyridyldiketone Ligands

2019 ◽  
Author(s):  
Racha Abed Ali Abdine ◽  
Anna Walczak ◽  
Sultan Abu A Aeash ◽  
Gracjan Kurpik ◽  
Artur R. Stefankiewicz ◽  
...  
Keyword(s):  
Catalytic System ◽  
Aqueous Ammonia ◽  
Aryl Halides ◽  
Efficient Coupling ◽  
Ambidentate Ligand ◽  
Mild Temperature

Ambidentate ligand pyridyldiketones were used in combination with copper to catalyze maintain of aryl halides under very mild temperatures. This novel catalytic system allow efficient coupling in one of the smoothest conditions ever reported in literature.

scholarly journals Synthesis of Lateral Root-Inducing Compounds Using an Efficient Coupling Reaction of Chiral Triflates

1991 ◽  
Vol 64 (2) ◽  
pp. 721-723 ◽  
Author(s):  
Hiyoshizo Kotsuki ◽  
Aya Miyazaki ◽  
Masamitsu Ochi ◽  
James J. Sims
Keyword(s):  
Lateral Root ◽  
Coupling Reaction ◽  
Efficient Coupling

Tailoring neutron beam properties by target-moderator-reflector optimisation

2021 ◽  
pp. 1-16
Author(s):  
Paul Zakalek ◽  
Jingjing Li ◽  
Sarah Böhm ◽  
Ulrich Rücker ◽  
Jörg Voigt ◽  
...  
Keyword(s):  
Neutron Beam ◽  
Heavy Water ◽  
Neutron Production ◽  
Neutron Sources ◽  
Light Water ◽  
Cold Neutrons ◽  
Efficient Coupling ◽  
Borated Polyethylene ◽  
Compact Design ◽  
Neutronic Performance

Compact accelerator-driven neutron sources allow to operate multiple optimised target-moderator-reflector (TMR) units adapted to the requirements of the respective instruments. The compact design of the TMR units allows an efficient coupling of neutron production, neutron moderation and extraction, but requires a novel way of optimisation. The neutronic performance of different TMR units based on polyethylene, heavy water and a mixture of heavy and light water moderators together with Pb and Be reflectors and a borated polyethylene absorber is discussed. Extraction channels for thermal and cold neutrons are investigated regarding the energy and time spectra.

Fabrication of Lensed Plastic Optical Fiber Array Using Electrostatic Force

2011 ◽  
Vol 133 (3) ◽  
Author(s):  
Yih-Tun Tseng ◽  
Jhong-Bin Huang ◽  
Che-Hsin Lin ◽  
Chin-Lung Chen ◽  
Wood-Hi Cheng
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Electrostatic Force ◽  
Coupling Efficiency ◽  
Numerical Aperture ◽  
Uv Curing ◽  
Power Budget ◽  
Fiber Array ◽  
Plastic Optical Fibers ◽  
Efficient Coupling

The GI (graded-index) POFs (Plastic optical fibers), which has been proven to reach distances as long as 1 km at 1.25 Gb/s has a relatively low numerical aperture . Therefore, the efficient coupling of GI POFs to the light source has become critical to the power budget in the system. Efficient coupling for a POFs system normally involves either a separate lens or the direct formation of the lens at the end of the fiber. Forming the lens-like structure directly on the fiber end is preferred for simplicity of fabrication and packaging, such as polishing and fusion, combine different fibers with the cascaded fiber method and hydroflouride (HF) chemical etching. These approaches are well established, but applicable only to glass. Optical assembly architecture for multichannel fibers and optical devices is critical to optical fiber interconnections. Multichannel fiber-pigtail laser diode (LD) modules have potential for supporting higher data throughput and longer transmission distances. However, to be of practical use, these modules must be more precise. This work proposes and manufactures lensed plastic optical fibers (LPOF) array. This novel manipulation can be utilized to fabricate an aspherical lens on a fiber array after the UV curing of the photo-sensitive polymer; the coupling efficiency (CE) is increased and exceeds 47% between the LD array and the fiber array.

Extremely high efficient coupling between long range surface plasmon polariton and dielectric waveguide mode

2009 ◽  
Vol 95 (9) ◽  
pp. 091104 ◽  
Author(s):  
Fang Liu ◽  
Ruiyuan Wan ◽  
Yunxiang Li ◽  
Yidong Huang ◽  
Yoshikatsu Miura ◽  
...  
Keyword(s):  
Long Range ◽  
Surface Plasmon ◽  
Dielectric Waveguide ◽  
Surface Plasmon Polariton ◽  
Waveguide Mode ◽  
High Efficient ◽  
Efficient Coupling ◽  
Plasmon Polariton

On coupling of random walks and renewal processes

1996 ◽  
Vol 33 (1) ◽  
pp. 122-126
Author(s):  
Torgny Lindvall ◽  
L. C. G. Rogers
Keyword(s):  
Random Walk ◽  
Random Walks ◽  
Simple Random Walk ◽  
Renewal Processes ◽  
Renewal Theorem ◽  
One Dimensional ◽  
Continuous State Space ◽  
Continuous State ◽  
Efficient Coupling ◽  
Blackwell's Renewal Theorem

The use of Mineka coupling is extended to a case with a continuous state space: an efficient coupling of random walks S and S' in can be made such that S' — S is virtually a one-dimensional simple random walk. This insight settles a zero-two law of ergodicity. One more proof of Blackwell's renewal theorem is also presented.

Efficient coupling by oxygen accelerated photocatalyzed thiol-alkyne chemistry

Polymer ◽  
2019 ◽  
Vol 161 ◽  
pp. 27-32
Author(s):  
Michael L. Allegrezza ◽  
Adam M. Thompson ◽  
Alex J. Kloster ◽  
Dominik Konkolewicz
Keyword(s):  
Efficient Coupling

scholarly journals Spontaneous emission modulation of colloidal quantum dots via efficient coupling with hybrid plasmonic photonic crystal

2014 ◽  
Vol 22 (19) ◽  
pp. 23473 ◽  
Author(s):  
X. W. Yuan ◽  
L. Shi ◽  
Qi Wang ◽  
C. Q. Chen ◽  
X. H. Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photonic Crystal ◽  
Spontaneous Emission ◽  
Colloidal Quantum Dots ◽  
Efficient Coupling ◽  
Emission Modulation
Sign in / Sign up

Export Citation Format

Share Document