scholarly journals Zinc blende versus wurtzite ZnS nanoparticles: control of the phase and optical properties by tetrabutylammonium hydroxide

2014 ◽  
Vol 16 (37) ◽  
pp. 20127-20137 ◽  
Author(s):  
F. A. La Porta ◽  
J. Andrés ◽  
M. S. Li ◽  
J. R. Sambrano ◽  
J. A. Varela ◽  
...  
Keyword(s):  
Optical Properties ◽  
Reaction Time ◽  
Cost Effective ◽  
Phase Control ◽  
Degree Of Crystallinity ◽  
Zns Nanoparticles ◽  
Fast Reaction ◽  
Tetrabutylammonium Hydroxide ◽  
Fast Reaction Time ◽  
Zinc Blende

We demonstrated phase control, mediated by the presence of tetrabutylammonium hydroxide, in the growth of ZnS crystals by using a cost effective MAS method; a very moderate temperature (140 °C) and a very fast reaction time are sufficient to produce nanostructures with a good degree of crystallinity.

Correlation between temporal response of fMRI and fast reaction time in a language task

2004 ◽  
Vol 22 (4) ◽  
pp. 451-455 ◽  
Author(s):  
Ho-Ling Liu ◽  
Wan-Ting Liao ◽  
Shin-Yi Fang ◽  
Tieh-Chi Chu ◽  
Li Hai Tan
Keyword(s):  
Reaction Time ◽  
Temporal Response ◽  
Fast Reaction ◽  
Fast Reaction Time

scholarly journals Solenoid actuated Five-fingered robotic hand design: evaluating the capability of solenoid actuators in generating basic finger motions

2019 ◽  
Vol 15 (3) ◽  
pp. 1273
Author(s):  
Syed Zainal Abidin Syed Kamarul Bahrin ◽  
Khairul Salleh Mohamed Sahari
Keyword(s):  
Reaction Time ◽  
Emerging Technologies ◽  
Robotic Hand ◽  
Fast Reaction ◽  
Stroke Length ◽  
Fast Reaction Time ◽  
Similar Appearance ◽  
Operational Concept ◽  
Fast Motions ◽  
Human Hands

<span lang="EN-GB">There are numerous robotic hand designs but the five-fingered robotic hand design is the most dexterous robotic hand design due to its similar appearance and motions with the human hands. The fingers' motions are commonly driven by geared motors or other types of emerging technologies. However, the motions are yet to be driven directly by solenoid actuators due to its limited stroke length and also general perceptions of its applications as an actuator. Nevertheless, solenoid actuators are known for their fast reaction time and strong holding force which are useful to generate fast motions and strong grasping actions. To realise this concept, previous research and developments had been done by the authors but the outcome was not convincing enough due to the absence of a working prototype. Therefore, this paper introduced a new solenoid actuated robotic hand design and its prototype. The prototype was then tested and evaluated in accordance to the operational concept where the findings showed that the solenoid actuators were capable of generating basic finger motions</span><span>.</span>

CHEMICAL PULPING. Oxidative degradation of AOX in softwood-based kraft mill effluents from E C F bleachin g

2012 ◽  
Vol 27 (4) ◽  
pp. 707-713 ◽  
Author(s):  
Jukka Pekka lsoaho ◽  
Suvi Tarkkanen ◽  
Raimo Alen ◽  
Juha Fiskari
Keyword(s):  
Reaction Time ◽  
Oxidative Degradation ◽  
Cost Effective ◽  
Process Conditions ◽  
Main Process ◽  
Chemical Pulping ◽  
Kraft Mill ◽  
Organic Halogens ◽  
Aox Removal ◽  
Adsorbable Organic Halogens

Abstract Softwood-based kraft mill bleaching effluents from the initial bleaching stages D0 and E1 (the bleaching sequence being D0E 1D 1 E2D2) were treated by the oxidative Fenton method (H20rFeS04) to decompose organic pollutants contammg adsorbable organic halogens (AOX). Experiments designed using the Taguchi method were applied to predict the process conditions that would result in a cost-effective and adequate removal of AOX. In addition to the composition and concentration of the reagents (H202 and Fe2+), the main process parameters selected were temperature and reaction time, while pH was adj usted to an approximate value of 4 (the volumetric ratio of the mixed effluents D0:E 1 was 3 :2). The results indicated that an AOX removal of about 70% for this mixture ( corresponding to about 50% for the mill) was achieved when the eftluent samples were treated for 60 min at 70°C with H202 and Fe2+ at a concentration of 1 600 mg/1 and 28 mg/1, respectively.

Deposition time dependent study of structural and optical properties of PbS thin films grown by CBD method

2020 ◽  
Vol 13 ◽  
Author(s):  
Minakshi Chaudhary ◽  
Yogesh Hase ◽  
Ashwini Punde ◽  
Pratibha Shinde ◽  
Ashish Waghmare ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Band Gap ◽  
Deposition Time ◽  
Secondary Growth ◽  
Cost Effective ◽  
Xrd Analysis ◽  
Structural Morphology ◽  
Glass Substrates ◽  
Cbd Method

: Thin films of PbS were prepared onto glass substrates by using a simple and cost effective CBD method. Influence of deposition time on structural, morphology and optical properties have been investigated systematically. The XRD analysis revealed that PbS films are polycrystalline with preferred orientation in (200) direction. Enhancement in crystallinity and PbS crystallite size has been observed with increase in deposition time. Formation of single phase PbS thin films has been further confirmed by Raman spectroscopy. The surface morphology analysis revealed the formation of prismatic and pebble-like PbS particles and with increase in deposition time these PbS particles are separated from each other without secondary growth. The data obtained from the EDX spectra shows the formation of high-quality but slightly sulfur rich PbS thin films over the entire range of deposition time studied. All films show increase in absorption with increase in deposition time and a strong absorption in the visible and sub-band gap regime of NIR range of the spectrum with red shift in band edge. The optical band gap shows decreasing trend, as deposition time increases but it is higher than the band gap of bulk PbS.

Exciton-related optical properties in zinc-blende GaN/InGaN quantum wells under hydrostatic pressure

2015 ◽  
Vol 252 (4) ◽  
pp. 670-677 ◽  
Author(s):  
C. M. Duque ◽  
A. L. Morales ◽  
M. E. Mora-Ramos ◽  
C. A. Duque
Keyword(s):  
Optical Properties ◽  
Hydrostatic Pressure ◽  
Quantum Wells ◽  
Zinc Blende ◽  
Ingan Quantum Wells

Optical properties of annealed Mn2+-doped ZnS nanoparticles

2008 ◽  
Vol 128 (1) ◽  
pp. 92-98 ◽  
Author(s):  
Benedikt Steitz ◽  
Yvonne Axmann ◽  
Heinrich Hofmann ◽  
Alke Petri-Fink
Keyword(s):  
Optical Properties ◽  
Zns Nanoparticles

Effect of reaction time and different solvents ratios on the formed phases and optical properties of formamidinium lead bromide

2021 ◽  
Vol 119 ◽  
pp. 111318
Author(s):  
A.M. El-naggar ◽  
Mohamed Bakr Mohamed ◽  
Zein K. Heiba ◽  
Rawabi E. Alatawi ◽  
A.M. Kamal ◽  
...  
Keyword(s):  
Optical Properties ◽  
Reaction Time ◽  
Lead Bromide

Cost-effective diagnostic kits for selective detection of gaseous H2S

2021 ◽  
Author(s):  
Prabhpreet Singh ◽  
Navdeep Kaur
Keyword(s):  
Optical Properties ◽  
Cost Effective ◽  
Perylene Diimide ◽  
Selective Detection ◽  
Diagnostic Kits ◽  
Limited Scope

Bay-functionalization of perylene diimide (PDI) dye provide scope for modulating the optical properties of PDI. Symmetrical functionalization at 1,7-position of bay-region of PDI offered limited scope for tunability of photo...

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