Results 101 to 110 of about 1,273,058 (405)

Narrowband Detection via Charge Collection Narrowing Organic Photodetector Enabled by Low Bandgap Random Terpolymer for Biometric Sensing

open access: yesAdvanced Functional Materials, EarlyView.
A novel low‐bandgap random terpolymer is designed for narrow band detection in charge collection narrowing (CCN) based organic photodetectors. With a relative thin active layer (<1 µm), the CCN‐based devices achieved a narrowband response of 68 nm full‐width‐at‐half‐maximum at 916 nm, together with Responsivity values of 0.13 A W−1 and dark current of ...
Matilde Brunetta   +14 more
wiley   +1 more source

A mini-review on recent trends in prospective use of porous 1D nanomaterials for hydrogen storage

open access: yesSouth African Journal of Chemical Engineering, 2022
The sustainable development of hydrogen energy is a priority task for a possible solution to the global energy crisis. Hydrogen is a clean and renewable energy source that today is used exclusively in the form of compressed gas or in liquefied form ...
Chingis Daulbayev   +7 more
doaj  

Experimental verification of computer spray-combustion models [PDF]

open access: yes, 1973
Analytical model formulation, representing performance of spray-combustion device, is based on understanding of atomization, mixing, vaporization, and combustion which occurs in device.
Clayton, R. M.   +2 more
core   +1 more source

A Numerical Study of a Simple Stochastic/Deterministic Model of Cycle-to-Cycle Combustion Fluctuations in Spark Ignition Engines [PDF]

open access: yesarXiv, 2004
We examine a simple, fuel-air, model of combustion in a spark ignition (si) engine with indirect injection. In our two fluid model, variations of fuel mass burned in cycle sequences appear due to stochastic fluctuations of a fuel feed amount. We have shown that a small amplitude of these fluctuations affects considerably the stability of a combustion ...
arxiv  

A 3D-printed, functionally graded soft robot powered by combustion

open access: yesScience, 2015
Making jack jump efficiently In the future, soft-bodied robots may be able to squeeze into tight spaces or work in environments where they could be crushed. However, it is hard to ensure efficient power transmission in a soft-bodied device. One promising
Nicholas W. Bartlett   +7 more
semanticscholar   +1 more source

Flexible Leaf‐Like Fuel Cell From Plasmonic Janus Nanosheet

open access: yesAdvanced Functional Materials, EarlyView.
A flexible leaf‐like fuel cell is fabricated by conductive gold nanowire sponge‐supported plasmonic Janus nanosheet, which can generate a power of 8.93 mW cm⁻2 with less than 10% performance deterioration even being bent or twisted. Further assembly in a tree‐like layout demonstrates omnidirectional light harvesting capability and wind resistance ...
Yifeng Huang   +3 more
wiley   +1 more source

A study of hydrogen fuel impact on compression ignition engine performance

open access: yesMATEC Web of Conferences, 2018
In this paper, a dual-fuel compression ignition engine test bench is presented. In hydrogen-diesel fuel co-combustion conditions, the engine parameters are determined – performance: effective torque, effective power and mean effective pressure; fuel ...
Dimitrov Evgeni   +4 more
doaj   +1 more source

Local heat flux measurement technique for internal combustion engines [PDF]

open access: yes, 2017
The heat transfer from the combustion gases to the cylinder wall affects the efficiency, emissions and power output of an internal combustion engine. Measuring the heat transfer requires a heat flux sensor inside the combustion chamber that has a short ...
Ameel, Bernd   +5 more
core   +1 more source

Sono‐Piezo‐Photosynthesis of Ethylene and Acetylene from Bioethanol under Ambient Conditions

open access: yesAdvanced Functional Materials, EarlyView.
A novel sono‐piezo‐photocatalytic strategy enables the conversion of bioethanol to ethylene (C2H4) and acetylene (C2H2) under ambient conditions, addressing the limitations of conventional methods that are high‐temperature and energy‐intensive. By using an advanced graphene oxide/sodium bismuth titanate heterostructure catalyst, this work achieved ...
Yue Jiang   +21 more
wiley   +1 more source

SHS of Oxide Systems Based on the “Mechano-Chemical” Quartz Modified by Organometallic Compounds

open access: yesEurasian Chemico-Technological Journal, 2000
The differences of the effects of mechanical substance pre-activation in the mills with divers force effect schemes on the self-propagating high temperature synthesis (SHS) of the SiO2 + 37.5 % Al system are shown.
G. I. Ksandopulo   +4 more
doaj   +1 more source

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