scholarly journals HETERO TRANSITIONS BASED ON - TlGaSe2 - - CuInSe2

2021 ◽  
Author(s):  
A.Ch. Matiyev ◽  
R.T. Uspazhiev
Keyword(s):  
Relaxation Time ◽  
Current Voltage ◽  
Wide Range ◽  
The Law ◽  
First Time ◽  
Kinetics Of

The current-voltage and lux-ampere characteristics, as well as the photovoltage spectra and the lux dependence of the photovoltage in the gate and photodiode modes of the p-TlGaSe2 - p-CuInSe2 heterojunction obtained for the first time are studied. It was found that this heterostructure has a pronounced diode character. The I - V characteristic of the structure under study is characterized by the fact that at low voltages it obeys well the law I ~ exp (eU / βkT). The photovoltage spectrum covers a wide range of wavelengths (0.55 - 1.85 µm). In this case, pronounced maxima are observed at λ = 0.59 and λ = 0.95 μm. The relaxation time τ determined from the kinetics of the photo-voltage in the valve mode is ~ 20 μs.

Tying the Knot

2021 ◽  
Author(s):  
Rebecca Probert
Keyword(s):  
Social Practice ◽  
Detailed Examination ◽  
Primary Sources ◽  
Individual Choice ◽  
Marriage Law ◽  
The Past ◽  
Wide Range ◽  
The Law ◽  
First Time

The Marriage Act 1836 established the foundations of modern marriage law, allowing couples to marry in register offices and non-Anglican places of worship for the first time. Rebecca Probert draws on an exceptionally wide range of primary sources to provide the first detailed examination of marriage legislation, social practice, and their mutual interplay, from 1836 through to the unanticipated demands of the 2020 coronavirus pandemic. She analyses how and why the law has evolved, closely interrogating the parliamentary and societal debates behind legislation. She demonstrates how people have chosen to marry and how those choices have changed, and evaluates how far the law has been help or hindrance in enabling couples to marry in ways that reflect their beliefs, be they religious or secular. In an era of individual choice and multiculturalism, Tying the Knot sign posts possible ways in which future legislators might avoid the pitfalls of the past.

Smart Heterostructures Based on Solid Solution ZnCdHgTe

2003 ◽  
Vol 785 ◽  
Author(s):  
Galina M. Khlyap ◽  
Petro G. Sydorchuk ◽  
Jacek Polit ◽  
Macej Oszwaldowsky
Keyword(s):  
Thin Films ◽  
Solid Solution ◽  
Spectral Range ◽  
Room Temperature ◽  
Signal Frequency ◽  
Applied Bias ◽  
Current Voltage ◽  
Wide Range ◽  
Capacitance Voltage ◽  
First Time

ABSTRACTCurrent – voltage (IVC) and capacitance – voltage (CVC) of heterostructures (Cd, Zn)Te/ZnCdHgTe are studied for the first time. Thin films ZnxCdyHg1-x-yTe were grown on monocrystalline (111) CdTe and ZnTe substrates by PLE technology. Deposition was carried out on substrates held at temperatures near 290 K. The thickness of investigated films was estimated to be about 5 μm. Electric characteristics of the as-grown structures were examined under T = 77–290 K in the wide range of applied bias. All investigated samples have demonstrated diode-like IVC and CVC under test signal frequency f = 1 kHz. Heterostructures CdTe/ZnCdHgTe have exhibited a room temperature photosensitivity in spectral range 0.50–0.65 μm.

Luminescence Properties of Yb-Doped Inp

1993 ◽  
Vol 301 ◽  
Author(s):  
H. J. Lozykowski ◽  
A. K. Alshawa ◽  
G. Pomrenke ◽  
I. Brown
Keyword(s):  
Quantitative Agreement ◽  
Excitation Intensity ◽  
Photoluminescence Intensity ◽  
Photoluminescence Quenching ◽  
Time Resolved ◽  
Wide Range ◽  
Decay Times ◽  
Different Temperatures ◽  
First Time ◽  
Kinetics Of

ABSTRACTThe photoluminescence, time resolved spectra and kinetics of Yb implanted InP samples are studied under pulsed and CW excitations (above and below band-gap) at different temperatures and excitation intensity. The photoluminescence intensity and decay time as a function of temperature is explained by a proposed new quenching mechanism involving Fe ion. The rise and decay times depend on excitation intensity. The above experimental facts was explained using the kinetics model developed by H.J. Lozykowski [2]. The numerically simulated luminescence rise and decay times show a good quantitative agreement with experiment, over a wide range of generation rates. The electric field InP:Yb photoluminescence quenching was investigated and reported for the first time.

An expression for droplet evaporation incorporating thermal effects

2011 ◽  
Vol 667 ◽  
pp. 260-271 ◽  
Author(s):  
K. SEFIANE ◽  
R. BENNACER
Keyword(s):  
Experimental Data ◽  
Thermal Effects ◽  
Droplet Evaporation ◽  
Theoretical Expression ◽  
Dimensionless Number ◽  
Wide Range ◽  
Isothermal Diffusion ◽  
Rate Of Evaporation ◽  
First Time ◽  
Kinetics Of

We propose a general theoretical expression for sessile droplets' evaporation, incorporating thermal effects related to the thermal resistance of the substrate and liquid properties. We develop an expression which accounts for thermal effects associated with evaporative cooling; the latter leads to a reduction in the rate of evaporation, which is not accounted for in the current theories, i.e. ‘isothermal diffusion theories’. The threshold for transition to a regime in which thermal effects start to be significant is identified through a dimensionless number which includes substrate and liquid properties as well as the kinetics of evaporation. The proposed theory is validated against experimental data in a very wide range of conditions and for a variety of systems. The developed expression extends the domain of use of diffusion-based models for droplet evaporation and accurately describes some aspects of the phenomenon which, to the best of our knowledge, are highlighted for the first time.

THIRD-ORDER NONLINEAR OPTICAL RESPONSE OF A NEW LINEAR POLYMER WITH 4-AMINOAZOBENZENE

2001 ◽  
Vol 10 (03) ◽  
pp. 311-327 ◽  
Author(s):  
A. S. KUTSENKO ◽  
S. M. MALOLETOV ◽  
O. M. BURIN ◽  
V. I. VOLKOV ◽  
A. A. BORSHCH ◽  
...  
Keyword(s):  
Refractive Index ◽  
Relaxation Time ◽  
Nonlinear Refraction ◽  
Nonlinear Behavior ◽  
Polymer Chains ◽  
Azo Compounds ◽  
And Inversion ◽  
First Time ◽  
Kinetics Of

Nonlinear refraction in a new polymer material based on diglycidylether of bisphenol-A and containing 4-aminoazobenzene covalently attached to the polymer chains have been studied. The material was shown to exhibit fast nonlinear response (relaxation time about 20 ns, χ(3)= 5 × 10- 8 esu) together with slow one (relaxation time of the order of tens of hours). This makes it possible to record fast and long life (quasi stationary) phase holograms. An analysis of possible mechanisms for the refractive index nonlinear behavior in the new structure is presented. In particular, a role of electronic, thermal, orientation, and isomerization processes is discussed. It was for the first time shown that the rotational and inversion mechanisms of the cis → trans isomerization of the azo-compounds have determinative effect upon kinetics of the nonlinear refractive index relaxation. For the rotational mechanism the relaxation time was found to be 10-4 s meanwhile for the inversion mechanism it was 105 s.

scholarly journals Label-Free Optical Detection of Mycotoxins Using Specific Aptamers Immobilized on Gold Nanostructures

Toxins ◽  
2018 ◽  
Vol 10 (7) ◽  
pp. 291 ◽  
Author(s):  
Ali Ghanim Al-Rubaye ◽  
Alexei Nabok ◽  
Gaelle Catanante ◽  
Jean-Louis Marty ◽  
Eszter Takács ◽  
...  
Keyword(s):  
Aflatoxin B1 ◽  
Localized Surface Plasmon ◽  
The Novel ◽  
Label Free ◽  
Binding Characteristics ◽  
Highly Sensitive ◽  
Wide Range ◽  
Dna Chain ◽  
First Time ◽  
Kinetics Of

This work focuses on the development of the novel label-free optical apta-sensors for detection of mycotoxins. A highly sensitive analytical method of total internal reflection ellipsometry (TIRE) combined with Localized Surface Plasmon Resonance (LSPR) phenomenon in nano-structured gold films was exploited here for the first time for detection of aflatoxin B1 and M1 in direct assay with specific aptamers immobilized on the surface of gold. The achieved detection of low molecular weight molecules, such as aflatoxin B1 and M1, in a wide range of concentrations from 100 ng/mL down to 0.01 ng/mL is remarkable for the LSPR method. The study of binding kinetics of aflatoxin molecules to their respective aptamers using dynamic TIRE measurements yielded the values of affinity constants in the range of 10−8–10−7 mol, which is characteristic for highly specific aptamer/target interactions similar to that for monoclonal antibodies. The effect of aptamers’ DNA chain length on their binding characteristics was analyzed.

Buried Narratives: Exhuming the Mother's Story in Oliver Twist

2018 ◽  
Vol 8 (3) ◽  
pp. 247-266
Author(s):  
Michelle L. Wilson
Keyword(s):  
Social Change ◽  
Maternal Inheritance ◽  
The Novel ◽  
Poor Law ◽  
The Family ◽  
The Law ◽  
First Time ◽  
Critical Consideration

Initially, Oliver Twist (1839) might seem representative of the archetypal male social plot, following an orphan and finding him a place by discovering the father and settling the boy within his inheritance. But Agnes Fleming haunts this narrative, undoing its neat, linear transmission. This reconsideration of maternal inheritance and plot in the novel occurs against the backdrop of legal and social change. I extend the critical consideration of the novel's relationship to the New Poor Law by thinking about its reflection on the bastardy clauses. And here, of course, is where the mother enters. Under the bastardy clauses, the responsibility for economic maintenance of bastard children was, for the first time, legally assigned to the mother, relieving the father of any and all obligation. Oliver Twist manages to critique the bastardy clauses for their release of the father, while simultaneously embracing the placement of the mother at the head of the family line. Both Oliver and the novel thus suggest that it is the mother's story that matters, her name through which we find our own. And by containing both plots – that of the father and the mother – Oliver Twist reveals the violence implicit in traditional modes of inheritance in the novel and under the law.

Scintigraphic studies in rats. Kinetics of insulin analogues covering wide range of receptor affinities

Diabetes ◽  
1991 ◽  
Vol 40 (5) ◽  
pp. 628-632 ◽  
Author(s):  
I. Jensen ◽  
V. Kruse ◽  
U. D. Larsen
Keyword(s):  
Insulin Analogues ◽  
Wide Range ◽  
Kinetics Of

Impact Of Synthesis Route on the Water Oxidation Kinetics of Hematite Photoanodes

2020 ◽  
Author(s):  
Camilo A. Mesa ◽  
Ludmilla Steier ◽  
Benjamin Moss ◽  
Laia Francàs ◽  
James E. Thorne ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Reaction Kinetics ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Oxidation Reaction ◽  
Charge Accumulation ◽  
Optical Signals ◽  
Current Voltage ◽  
Voltage Performance ◽  
Kinetics Of

<p><i>Operando</i> spectroelectrochemical analysis is used to determine the water oxidation reaction kinetics for hematite photoanodes prepared using four different synthetic procedures. Whilst these photoanodes exhibit very different current / voltage performance, their underlying water oxidation kinetics are found to be almost invariant. Lower photoanode performance was found to correlate with the observation of optical signals indicative of charge accumulation in mid-gap oxygen vacancy states, indicating these states do not contribute directly to water oxidation.</p>

Zeolites Fit For A Crown: Probing Host-Guest Interactions with Thermogravimetric Methods

2018 ◽  
Author(s):  
Asel Sartbaeva ◽  
Paul R. Raithby ◽  
Remi Castaing ◽  
Antony Nearchou
Keyword(s):  
Mass Spectrometry ◽  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Petrochemical Industry ◽  
Rational Use ◽  
New Methodologies ◽  
First Time ◽  
Kinetics Of

Through a combination of thermogravimetry, mass spectrometry and differential thermal analysis, we demonstrate for the first time that all four zeolites show experimental differences in their host-guest interactions with 18C6. In addition, we have estimated the kinetics of 18C6 decomposition, which is a technique that has not been applied to zeolites previously. Using these findings as a toolkit, a more rational use of OSDAs can be utilised to prepare designer zeolites. Furthermore, the new methodologies presented herein can be applied to current zeolites, such as MFI-type zeolites used in the petrochemical industry.

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