Novel ITO-Si nanowire (NW) metal-insulator-semiconductor (MIS) photodetectors were fabricated by using n-type Si NWs as detection units and ITO films top gate electrodes. Measurements on the NW based device reveal a significant photoresponse, including photocurrent generation with an external quantum efficiency (EQE) of approximately 35% at peak wavelength 600 nm zero bias, EQE 70% 800 - 0.5 V bias. The shows flat low reflectance almost constant up to 60 degrees incident angle illumination,...

A tandem device which integrates a PVDF nanogenerator and silicon (Si) nanopillar solar cell is fabricated. The Si was fabricated using mask-free plasma etching technique annealing process. stacked on top of the spinning method. optical properties performance nanowire cells have been characterized, dependence versus time or method has investigated. Furthermore, operated with 100 dB sound wave 0.8 V peak to output voltage generated. This can successfully harvest energy from both vibration...

This article presents a multi-input single-inductor multi-output energy-harvesting interface that extracts power from three independent sources and regulates output voltages. The converter employs the proposed double-conversion rejection technique to reduce double-converted by up 81.8% under light-load condition operates in various conversion modes, including buck-based dual-conversion mode, improve efficiency maximum load power. adaptive peak inductor current controller determines charging...

Abstract Annexin‐based probes have long been used to study apoptotic cell death, which is of key importance many areas biological research, drug discovery, and clinical applications. Although apoptosis a dynamic event with cell‐to‐cell variations, current annexin‐based are impractical for monitoring in real‐time. Herein, quenched annexin V‐near‐infrared fluorophore conjugate (Q‐annexin V) reported as the first OFF‐ON protein‐based molecular sensor real‐time near‐infrared fluorescence imaging...

This article proposes a continuously scalable-conversion-ratio (CSCR) switched-capacitor (SC) energy harvesting interface that extracts power from thermoelectric generator (TEG), regulates 0.75-V output load, and manages 1.2-1.45-V battery. The structure employs the proposed CSCR SC converter to improve conversion efficiency up 7.9% higher than of conventional converter. Moreover, utilizes SC-based pulse frequency modulation (PFM) maximum point tracking (MPPT) method extract TEG with an MPPT...

This article presents a thermoelectric (TE) energy-harvesting interface with reconfigurable dc–dc converter and time-based instantaneous linear extrapolation (ILE) maximum power point tracking (MPPT) method. The proposed comprises five switches for buck–boost operation an additional switch dual-conversion mode in which battery TE generator (TEG) are extracted one cycle; therefore, the improved density is achieved. ILE MPPT algorithm does not require TEG disconnection from converter, ensuring...

Few studies have examined overall patterns of eating alone in relation to the risk metabolic syndrome (MetS) Korean populations. The present study aimed examine relationship between and MetS adults. Data from Korea National Health Nutrition Examination Survey (KNHANES) for 2013–2015 were used, with 8988 adult participants, including 3624 men 5364 women, aged 18 64 years. Patterns categorized into eight groups based on total frequency a daily basis past one year: (1) three times breakfast,...

Background Nature-based therapy (NBT), which centers around engaging in activities within natural surroundings, has consistently demonstrated therapeutic benefits for mental health. While NBT highlights the potential of nature as a resource promoting health, there is limited knowledge regarding its underlying mechanisms. Methods Two hundred seventy-six Korean participants (204 women, mean age = 54.99 ± 23.25 years) participated 30-session gardening program held twice weekly 15 weeks....

In this letter, a four-phase hybrid step-up/step-down dc–dc converter with delay-based zero-current detector (ZCD) is proposed. The proposed power stage operates in step-up or step-down mode depending on the target output voltage. It utilizes switched-inductor-capacitor and dual-path topologies multiphase operation to reduce conduction loss due dc resistance of inductor by reducing rms current ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML"...

Container-based virtualization offers several advantages such as high performance, resource efficiency, and agile environment, which can make IoT device management easy. Though previous studies introduce container-based to devices, they do not address different network modes of containers the performance issues. Because is an important factor in IoT, analysis on essential. In this paper, we analyze by deploying actual device, Raspberry pi3.

The association between obesity and vertebral fracture remains controversial. This study aimed to investigate the obesity/abdominal according menopausal status. nationwide population-based epidemiologic collected data from Korean National Health Insurance Services in pre postmenopausal women who underwent national cancer screening 2009. We used three body composite indices of obesity, mass index, waist circumference waist-to-height ratio, classify participants into abdominal groups. In both...

Background and Objectives: The aim of our study was to test whether wide diameter (6 mm) implants perform differently from standard (4 in terms marginal bone level survival rate. Materials Methods: Our sample comprised 72 patients who underwent surgery; a total 80 were placed the maxillary or mandibular molar region. Patients divided into two groups according implant, followed up for six years after final setting prosthetics. In group, 40 with 6-mm inserted; control inserted. Using panoramic...

Although body weight variability has been associated with mortality, cardiovascular disease, and dementia, the relationship between Parkinson disease (PD) rarely studied. We aimed to investigate longitudinal association PD incidence.A nationwide population-based, cohort study was conducted using database from Health Insurance Review Assessment Service of whole Korean population. analyzed 2,815,135 participants (≥40 years old, mean age = 51.7 ± 8.6 years, 66.8% men) without a previous...

광섬유 격자를 이용한 센서 네트워크를 이용하여 준분배형 전력설비 안전진단 시스템을 구성하였다. FBG를 센서는 한 개의 라인에 복수의 센서가 설치가능하며, 전자기 노이즈에 영향을 받지 않는 특성을 가진다. 격자에서 반사되는 파장의 신호를 분석하기 위하여 InGaAs PD 어레이와 홀로그램회절격자를 구조가 간단하면서도 고속의 파장복조가 가능하도록 하였다. 제안한 시스템의 정확도를 개선하기 위해 가우시안 라인피팅을 적용하였고, 높은 파장 정밀도(4[pm])와 동작 안정성을 얻을 수 있음을 확인하였다.

This article presents a four-phase time-based switched-capacitor low-dropout (SCLDO) regulator that regulates an output load voltage ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$V_{\text {OUT}}$ </tex-math></inline-formula> ) of 0.35–0.95 V with input {IN}}$ 0.45–1 V. The employs time quantizer, which enables high proportional gain control and short transient response relatively low quiescent current....

Probabilistic computing has been introduced to operate functional networks using a probabilistic bit (p-bit), broadening the computational abilities in non-deterministic polynomial searching operations. However, previous developments have focused on emulating operation of quantum computers similarly, implementing every p-bit with large weight-sum matrix multiplication blocks and requiring tens times more p-bits than semiprime bits. In addition, operations based conventional simulated...

Abstract Blick in die Kristallkugel: Ein einfaches Pd‐katalysiertes Ätzverfahren macht polykristalline Beschaffenheit von Fe 3 O 4 ‐ (siehe Bild), 2 ‐, MnFe CoFe und MnO‐Nanopartikelsystemen sichtbar. Die Messmethode beruht auf dem schnellen Ätzvorgang an den Domänengrenzen di‐ oder polykristallinen Nanokristallen ermöglicht eine quantitative Bestimmung der Polykristallinität. magnified image

Applicability of organic Rankine cycle for a passenger car with 3.5 L gasoline engine to convert low grade waste heat useful shaft power has been numerically studied. Working fluid is R134a, and the composed boiler recovering cooling water heat, super heater exhaust gas scroll expander converting power, condenser emission, internal exchanger, feed pump. Assuming efficiencies 90% exchangers, 75% expander, 80% pump, efficiency 5.53% was calculated at vehicle speed 120 km/hr. Net output after...

A scroll expander was designed, fabricated, and tested as a power converting device in waste heat recovery system fitted to the cooling of internal combustion engine. An algebraic spiral adopted base curve for wrap profile compact design. reduction approximately 13.2% accomplished diameter, compared conventional involute scroll. Additionally, numerical analysis on performance showed that designed about same expander. The fabricated prototype R134a Rankine cycle with source 20 kW. For...