Unsteady Combustor Physics

Textile-based electronic components have gained interest in the fields of science and technology Recent developments in nanotechnology have enabled the integration of electronic components into textiles while retaining desirable characteristics such as flexibility, strength, and conductivity Various materials were investigated in detail to obtain current conductive textile technology, and the integration of electronic components into these textiles shows great promise for common everyday applications The harvest and storage of energy in textile electronics is a challenge that requires further attention in order to enable complete adoption of this technology in practical implementations This review focuses on the various conductive textiles, their methods of preparation, and textile-based electronic components We also focus on fabrication and the function of textile-based energy harvesting and storage devices, discuss their fundamental limitations, and suggest new areas of study

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Textile-Based Electronic Components for Energy Applications: Principles, Problems, and Perspective.

Influence of functional groups on low-temperature combustion chemistry of biofuels

Propose
A qualitative approach using semi-structured individual interviews was used to elicit common outdoor difficulties in individuals with visual impairment.

Outdoor difficulties experienced by a group of visually impaired Iranian people.

Ultra-precise timing has become a prerequisite for many modern large-scale scientific instruments, and timing precision is a crucial enabling factor to achieve the ultimate goals of those instruments. Here, we review the recent progress in timing technologies, including timing characterization methods among different kinds of sources (optical lasers, microwaves and x-ray pulses), large-scale free-space timing synchronization, and fiber-based timing synchronization. Technical and fundamental limitations of fiber-based timing systems are also discussed to provide future directions.

Ultra-precise timing and synchronization for large-scale scientific instruments

Co-optima fuels combustion: A comprehensive experimental investigation of prenol isomers

We characterize the timing jitter spectral density of the time-of-flight (TOF) in the indoor atmospheric transfer of optical pulse train over 10 decades of Fourier frequency range (10 μHz – 100 kHz) with sub-100-as resolution using a balanced optical cross-correlator (BOC). Based on the well-known theory for atmospheric transfer of a laser beam, we could fit the measured timing jitter power spectral density to the theory and analyze it with a fairly good agreement from 20 mHz to 10 Hz Fourier frequency range. Moreover, we demonstrate that the BOC-based timing stabilization method can suppress the excess fluctuations in timing from >200 fs (rms) to 2.6 fs (rms) maintained over 130 hours when an optical pulse train is transferred over a 76.2-m long free-space beam path in laboratory environment. The demonstrated stabilization result corresponds to 4 × 10−20 overlapping Allan deviation at 117,000s averaging time.

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Suhyeon Park

Papers

Co-optima fuels combustion: A comprehensive experimental investigation of prenol isomers

Few-femtosecond-resolution characterization and suppression of excess timing jitter and drift in indoor atmospheric frequency comb transfer

A portable mid-range localization system using infrared LEDs for visually impaired people

Laminar Burning Velocities of High-Performance Fuels Relevant to the Co-Optima Initiative

Flow Field and Wall Temperature Measurements for Reacting Flow in a Lean Premixed Swirl Stabilized Can Combustor