Results 101 to 110 of about 837,694 (400)

Advances in Interface Circuits for Self-Powered Piezoelectric Energy Harvesting Systems: A Comprehensive Review

open access: yesSensors
This paper presents a comprehensive summary of recent advances in circuit topologies for piezoelectric energy harvesting, leading to self-powered systems (SPSs), covering the full-bridge rectifier (FBR) and half-bridge rectifier (HBR), AC-DC converters ...
Abdallah Al Ghazi   +2 more
doaj   +1 more source

Single Aliquot Regeneration (SAR) Optically Stimulated Luminescence Dating Protocols Using Different Grain-Sizes of Quartz: Revisiting the Chronology of Mircea Vodă Loess-Paleosol Master Section (Romania)

open access: yesMethods and Protocols, 2020
The loess-paleosol archive from Mircea Vodă (Romania) represents one of the most studied sections in Europe. We are applying here the current state of the art luminescence dating protocols for revisiting the chronology of this section.
Ștefana-M. Groza-Săcaciu   +2 more
doaj   +1 more source

青葉山周辺から産する鉱物標本の産出層準- 仙台地域の地学教材の基礎資料 - [PDF]

open access: yes, 2019
Mineral specimens occurring around the Aobayama Hill have been utilized as scientific study objects, also as familiar geology-teaching materials in the Sendai area.
佐藤 奈月   +4 more
core   +1 more source

Optically stimulated luminescence dating using quartz

open access: yesNature Reviews Methods Primers, 2021
A. Murray   +7 more
semanticscholar   +1 more source

The Attachment of Quartz Fibres [PDF]

open access: yesProceedings of the Physical Society of London, 1894
n ...
openaire   +3 more sources

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

open access: yesAdvanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong   +16 more
wiley   +1 more source

Cathodoluminescence of shocked quartz at the Cretaceous-Tertiary boundary [PDF]

open access: yes
Empirical studies have documented an association between rock type and the cathodoluminescence color of constituent quartz grains. Quartz from extrusive igneous sources luminesces uniform pale blue.
Anders, Mark H., Owen, Michael R.
core   +1 more source

Movement of dislocations in quartz [PDF]

open access: yesProceedings of the 45th Annual Symposium on Frequency Control 1991, 2002
When quartz is subjected to high stress and temperature, it flows (plastically deforms) through a mechanism involving the movement of dislocations. The author discusses historical background and current theories of dislocations in quartz. A review is given of the literature, including geophysical work, and its implications for frequency control ...
openaire   +2 more sources

Spectroelectrochemical Determination of Förster Radii for Triplet‐Polaron Quenching in Phosphorescent Organic Light‐Emitting Diodes

open access: yesAdvanced Functional Materials, EarlyView.
Phosphorescent OLEDs suffer from efficiency roll‐off due to triplet‐polaron quenching (TPQ). This study demonstrates for a large set of host‐guest combinations a spectroelectrochemical method to measure the absorption of charged molecules, enabling determining TPQ Förster radii (2.5–4 nm) from the spectral overlap.
Stan E. A. Jaspars   +5 more
wiley   +1 more source

Quartz variometer

open access: yes, 2019
This paper considers a new version of the compact design of the quartz variometer based on quartz magnetic sensors and photoelectric converter, made on the basis of transistor optopara and based on them magneto-measuring converter. The proposed design of the two-component quartz magnetic sensors in the practice of quartz magnetometric instrumentation ...
openaire   +3 more sources

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