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The Evaluation of Energy Conservation Performance on Electricity: A Case Study of the TFT-LCD Optronics Industry
摘要： This study describes the performance evaluation of an energy management system, based on electricity consumption, for a Gen 6 Thin Film Transistor Liquid Crystal Display (TFT-LCD) panel plant. Of the various production lines and facility systems, the array system and the compressed dry air consumed the most electricity of 21.8% and 19.8%, respectively, while the public utility used only 1.6% of the total electricity. The baseline electricity consumptions were correlated well (R2 ě 0.77) to the monthly average wet-bulb temperatures of ambient air and the panel yield rates, which were determined by the product yield over the equipment available time index. After implementing the energy saving projects, the energy conservation performance was determined using a three-parameter change-point regression model incorporated with the panel yield rates. The post-retro?t monthly savings of the total electricity consumption for the panel manufacture were 5.35%–10.36%, with the ef?ciency of the electricity performance revealing an upswing trend following the implementation of the energy management system.
关键词： wet-bulb temperature,three-parameter change-point model,yield rate,energy management system
更新于2025-09-09 09:28:46
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Near-Room-Temperature Ethanol Gas Sensor Based on Mesoporous Ag/Zn-LaFeO <sub/>3</sub> Nanocomposite
摘要： The rational design of heterojunction between different metal oxides with mesoporous structures has attracted tremendous attention due to their special physicochemical properties and vital importance for practical applications. In this paper, mesoporous Ag/Zn–LaFeO3 nanocomposite is successfully synthesized through a facile nanocasting technique using KIT-6 as a hard template in sol–gel route and used as sensing materials to achieve an exceptionally sensitive and selective detection of trace ppm-level ethanol. The obtained composite possesses high surface area and exhibits excellent sensing response (64.2 for 100 ppm) to ethanol at near-room with relatively fast response/recovery time. When tested with the concentrations as low as 5 ppm, it also shows a remarkably high selectivity to the ethanol, but only minor responses to other interfering gases. These enhanced gas-sensing properties are attributed to the combination of mesoporous nanostructure and Ag/Zn–LaFeO3 heterogeneous composites.
关键词： mesoporous,ethanol,gas sensors,near-room temperature,Ag/Zn–LaFeO3 nanocomposite
更新于2025-09-09 09:28:46
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Double active layer InZnO:N/InZnSnO thin film transistors with high mobility at low annealing temperature
摘要： In this paper, bottom-gate top-contact thin film transistors (TFTs) with a double active layer of InZnO:N/InZnSnO (IZO:N/IZTO) were successfully prepared. The IZO:N/IZTO thin films were deposited on SiO2/p-Si substrates by radio frequency (RF) magnetron sputtering at room temperature. The transmittance of both the IZO:N thin film and the IZTO thin film were more than 80% in the range of visible light. The IZO:N thin film and the IZTO thin film were found to be amorphous at the annealing temperature of 325?°C by means of X-ray diffraction (XRD). The double active layer IZO:N/IZTO TFT exhibited good electrical performance with a saturation mobility of 41.5?cm2?V?1?s?1, an on/off current ratio of 2.88 × 105, and a threshold voltage of 1.0?V, which achieved high mobility at the low annealing temperature of 325?°C.
关键词： low annealing temperature,RF magnetron sputtering,high mobility,InZnO:N/InZnSnO,thin film transistors
更新于2025-09-09 09:28:46
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[IEEE 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) - Honolulu, HI, USA (2018.7.18-2018.7.21)] 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) - In vitro Measurement of Release Kinetics of Temperature Sensitive Liposomes with a Fluorescence Imaging System
摘要： Temperature sensitive liposomes (TSL) are a promising type of nanoparticles for localized drug delivery. TSL typically release the contained drug at mild hyperthermic temperatures (40-42 oC). Combined with localized hyperthermia, this allows for local drug delivery. In vitro characterization of TSL involves measurements of drug release at varying temperatures, but current methods are inadequate due to low temporal resolution of ~8 – 10 seconds. We present a novel method for measuring the drug release with sub-second temporal resolution. In the proposed system, the TSL entrapping the fluorescent drug (Doxorubicin) are pumped through a capillary tube. The tube is rapidly heated to a desired temperature via Peltier element. Since fluorescence increases as drug is released from TSL, drug release kinetics can be measured via fluorescent imaging. By fitting exponential models, we calculated the time constants of drug release at temperatures of 39.5, 40.5 and 41.5?C were about 6.09, 2.06 and 1.03 seconds, respectively. Our initial tests show that the developed system can measure TSL release at subsecond resolution, and thus allow adequate in vitro evaluation of TSL formulations.
关键词： drug delivery,Peltier element,Temperature sensitive liposomes,fluorescence imaging,capillary tube
更新于2025-09-09 09:28:46
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Study of single mode tapered fiber-optic interferometer of different waist diameters and its application as a temperature sensor
摘要： We have proposed a study on single-mode tapered optical fiber for temperature sensing application. A theoretical analysis and its experimental validation were carried out to study the taper profile for highly sensitive temperature sensor. Experiments were performed to observe a wavelength shift of transmission spectra with different taper profiles. The effects of taper profiles on the sensitivity of the sensor were also investigated. Our results indicate that the tapered fiber-based temperature sensor has sensitivity in the range of 0.01143 to 0.03406 nm/?C. The findings also demonstrate that the sensor sensitivity can be adjusted with variation to the taper profile.
关键词： fiber sensor,Tapered optical fiber,temperature sensor
更新于2025-09-09 09:28:46
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Visible light enhanced black NiO sensors for ppb-level NO2 detection at room temperature
摘要： Although extensive studies have been carried out on n-type semiconductors for room-temperature gas sensor applications, some intrinsic problems remain. Therefore, other interesting attempts should be adopted to solve these issues, like p-type semiconductors. Previous studies have demonstrated that p-type semiconductor gas sensors exhibit better selectivity and less humidity dependence due to the distinctive oxygen adsorption and surface reactivity. Visible light is used as the external activation source to accelerate the sensing kinetics instead of heating. Stoichiometric NiO cannot absorb visible lights. Inspired by the works of black TiO2, we adopted three methods to prepare black NiO. XPS characterizations reveal that the presence of Ni3+ ions leads to the formation of black NiO. However, not all black NiO samples show good responses to NO2 at room temperature. Three main routes: synthesizing specific morphology with large specific surface area and porosity, introduction of Ni3+ ions and oxygen vacancies, are needed to get the enhanced sensing performance. The black NiO samples with large specific surface area and oxygen vacancies and Ni3+ ions show obvious response towards ppb-level NO2 with visible light irradiation at room temperature. Furthermore, light wavelength is found to play a vital role in the sensing characteristics, and blue light is the optimal choice. Different from traditional NiO sensors operated at high temperatures exhibiting superior response to reducing gases, the black NiO show excellent selectivity towards oxidizing gas, ppb-level NO2, at room temperature illuminated by blue light. In contrast with n-type semiconductors, the black NiO samples also exhibit less humidity dependence.
关键词： Room temperature,NO2 sensor,NiO,Visible light irradiation
更新于2025-09-09 09:28:46
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Effect of Te Proportion on the Properties of Ge25Sb10Se65-Te Chalcogenide Glasses
摘要： The effect of Te proportion on the physical, thermal and optical properties of Ge-Sb-Se glasses was the goal of this study. In this regards, four different glasses of Ge25Sb10Se65-xTex (x=5,10,15,20) were prepared by conventional melt quenching technique in quartz ampoule. The produced samples were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR spectroscopy), Vickers hardness tester, Differential scanning calorimetry (DSC) and Thermal mechanical analysis (TMA). Based on the obtained results, we known that the overall transmittance of the samples is about 55%. For physical properties, as the Te content increases from 5% to 20%, the glass density increases from 4.52 g·cm-3 to 4.78 g·cm-3 and the Vickers hardness value is improved from 172 kg·mm-2 to 198 kg·mm-2. With respect to the thermal properties, the glass transition temperature is 551.45 K-514.56 K and the difference of Tx-Tg is more than 110 K, where Tx is the initial crystallization temperature, and Tg is the glass transition temperature. While the thermal expansion coefficient varies little, from 1.87×10-5 to 1.82×10-5. In addition, the Tg value achieved by DSC is higher than that of TMA, which gives out a reference for the measurement of characteristic temperature.
关键词： thermal properties,transmittance,characteristic temperature,Chalcogenide glasses
更新于2025-09-09 09:28:46
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Er-doped antimonite Sb2O3?PbO?ZnO/ZnS glasses studied by low-temperature photoluminescence spectroscopy
摘要： Antimonite glasses Sb2O3?PbO?ZnO/ZnS doped with ErCl3 within the range of 0.25-1.0% were prepared and investigated by means of transmission, photoluminescence excitation and photoluminescence (PL) spectroscopy. In the studied glasses, the wavelength of 522 nm was found to be the most suitable for PL excitation of Er3+ ions doped in both the NIR and VIS spectral ranges. The PL spectra excited by wavelengths at 522 and/or 514.5 nm were measured at room and low temperatures (4 K) in the wavelength range of 400–1700 nm. Low-temperature PL spectroscopy allowed us to observe both the broad luminescence of the host glass centered at around 1050 nm and the narrow emissions caused by Er3+ ions. Special attention was given to the wavelengths where the broad-band luminescence of the host overlaps with 4f–4f transitions within Er3+ ions. A broad PL band of the host glass was observed together with a superimposed narrow emission band at 985 nm (4I11/2? 4I15/2) and a narrow absorption dip at about 970 nm (4I15/2? 4I11/2). This absorption dip is a direct experimental evidence of energy transfer from the electronic structure of the host glass to 4f states of doped-in Er3+ ions. The strongest PL band at 1530 nm, representing transition from the lowest excited manifold 4I13/2 to the ground state manifold 4I15/2 was measured at 300 K and 4 K. The broadening at elevated temperature occurs primarily in the high energy part of the spectrum due to thermal excitation of electrons within the 4I13/2 manifold.
关键词： photoluminescence excitation spectroscopy,broad-band luminescence,low-temperature photoluminescence spectroscopy,erbium,antimonite glasses
更新于2025-09-09 09:28:46
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A Wideband HTS Filter Using Strong Coupling Coplanar Spiral Resonator Structure
摘要： A novel coplanar spiral resonator structure (CSRS), which has a stronger coupling strength than normal CPW structure, is introduced. This structure helps to realize the remarkable strong coupling required for low-frequency wideband ?lters. Although no grounded stubs are deployed to balance the ground plane, the slot-line mode of the ?lter is not excited. An eight-pole wideband high-temperature superconducting (HTS) ?lter, with a fractional bandwidth (FBW) of 50% and a center frequency of 322MHz, is developed. The ?lter is designed and fabricated on a 0.5-mm-thick LaAlO3 substrate with a core size of 41mm × 22mm. The measured minimum insertion loss is 0.05dB and the ?rst spurious peak appears at 842 MHz, which is about 2.6 times the center frequency. The measured results agree well with the simulated results.
关键词： high-temperature superconducting (HTS),Wideband bandpass ?lter,coplanar waveguide (CPW)
更新于2025-09-09 09:28:46
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Differential Dual-Band Superconducting Bandpass Filter Using Multimode Square Ring Loaded Resonators With Controllable Bandwidths
摘要： In this paper, a fourth-order dual-band high-temperature superconducting (HTS) differential bandpass filter (BPF) with controllable midband frequencies and bandwidths is developed by using modified multimode square ring loaded resonators (SRLRs). The differential-mode (DM) bisection and common-mode (CM) bisection of the modified SRLR are analyzed by using the even- and odd-mode method twice, and the corresponding resonant properties are obtained. With a proper design of the modified SRLR, two lowest DM resonances are chosen to construct two DM passbands with high in-band CM suppression. The DM resonances can be adjusted flexibly after adding tunable patches to the square ring. Meanwhile, the internal coupling between two modified SRLRs can be controlled separately by using two geometrical parameters. Consequently, the proposed dual-band BPF can achieve independent control of both the midband frequencies and the bandwidths of its two passbands. Moreover, a wideband CM suppression is realized by a combined use of an appropriately selected feeding structure and a frequency discrepancy technique. A fourth-order dual-band differential BPF is designed with two passbands operating at 2.325 and 4.900 GHz, respectively. The filter is fabricated using HTS YBCO thin films on a MgO substrate. Good agreement between the simulated and measured frequency responses are observed, verifying well the proposed structure and design method.
关键词： Bandpass filter (BPF),square ring loaded resonator (SRLR),high-temperature superconducting (HTS),differential,dual-band
更新于2025-09-09 09:28:46