• Title/Summary/Keyword: ultra-high resolution

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Avantor® ACE® UltraCore HPLC and UHPLC Columns (Avantor® ACE® UltraCore HPLC/UHPLC 칼럼 가이드)

  • Peter Bridge;Ian Phillips;Gemma Lo;Cassandra Rusher
    • FOCUS: LIFE SCIENCE
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    • no.1
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    • pp.4.1-4.15
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    • 2024
  • The Avantor® ACE® UltraCore series encompasses High Performance Liquid Chromatography (HPLC) and Ultra High Performance Liquid Chromatography (UHPLC) columns designed to deliver high throughput and high-efficiency ultra-fast separations. Utilizing ultra-inert solid-core silica particles with monodisperse particle distribution, these columns combine the high efficiency of UHPLC with the operability of HPLC instrumentation, yielding lower backpressure and high-resolution separations suitable for a broad spectrum of analytes. The Avantor® ACE® UltraCore range includes three primary product types: • UltraCore BIO: Designed for large biomolecules (≥5 kDa), these columns offer exceptional performance in separating biologically derived compounds. • UltraCore: Ideal for standard small organic molecules, providing rapid separations for both synthetic and natural mixtures. • UltraCore Super: Equipped with encapsulated bonding technology for small organic molecules in extreme pH conditions, optimal for high pH buffer requirements. The Avantor® ACE® UltraCore columns present a versatile and high-efficiency solution for chromatographic separation needs, accommodating a wide range of molecular sizes and providing enhanced resolution and reduced analysis time. Their adaptability to both HPLC and UHPLC systems, combined with the advantages of solid-core technology, makes them an invaluable tool in analytical and preparative chromatography.

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Ultra-High Resolution and Large Size Organic Light Emitting Diode Panels with Highly Reliable Gate Driver Circuits

  • Hong Jae Shin
    • International journal of advanced smart convergence
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    • v.12 no.4
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    • pp.1-7
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    • 2023
  • Large-size, organic light-emitting device (OLED) panels based on highly reliable gate driver circuits integrated using InGaZnO thin film transistors (TFTs) were developed to achieve ultra-high resolution TVs. These large-size OLED panels were driven by using a novel gate driver circuit not only for displaying images but also for sensing TFT characteristics for external compensation. Regardless of the negative threshold voltage of the TFTs, the proposed gate driver circuit in OLED panels functioned precisely, resulting from a decrease in the leakage current. The falling time of the circuit is approximately 0.9 ㎲, which is fast enough to drive 8K resolution OLED displays at 120 Hz. 120 Hz is most commonly used as the operating voltage because images consisting of 120 frames per second can be quickly shown on the display panel without any image sticking. The reliability tests showed that the lifetime of the proposed integrated gate driver is at least 100,000 h.

The Design and Implementation of Multiple Digital Signage Video Sync Technology for Ultra-high Resolution (초고해상도 멀티 디지털 사이니지 영상 동기화 기술의 설계와 구현)

  • Park, Hyoungyill;Yoo, Sunkyu;Moon, Youngtai;Kim, Miok;Shin, Yongtae
    • Journal of Broadcast Engineering
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    • v.21 no.5
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    • pp.651-661
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    • 2016
  • 최근의 디지털 사이니지는 대형 고해상도 디스플레이를 이용해 사용자에게 초고해상도 파노라마형태의 볼거리를 제공하거나 사용자와 인터렉션 등을 통해 맞춤형광고를 제공하는 등 다양한 형태로 발전하고 있다. 또 개방형 디지털 사이니지의 발전과 함께 대형 멀티 사이니지를 이용한 초고화질 영상콘텐츠를 다양한 서비스 단말장치의 연동과 웹기반의 상호운용성을 갖춘 관리시스템이 활발히 연구될 것으로 보인다. 본 논문에서는 수십대에서 백여대 이상의 고해상도 디스플레이를 연동하여 초고해상도 영상표출의 기술의 구현방안과 정형화된 영상 해상도가 아닌 초고화질 영상의 개별 콘텐츠에 대한 동기화 시키는 기술을 이용하여 멀티 콘텐츠 플레이 단말기에서 고해상도 영상을 Play Sync하는 기술을 연구한다.

Low-noise fast-response readout circuit to improve coincidence time resolution

  • Jiwoong Jung;Yong Choi;Seunghun Back;Jin Ho Jung;Sangwon Lee;Yeonkyeong Kim
    • Nuclear Engineering and Technology
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    • v.56 no.4
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    • pp.1532-1537
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    • 2024
  • Time-of-flight (TOF) PET detectors with fast-rise-time scintillators and fast-single photon time resolution silicon photomultiplier (SiPM) have been developed to improve the coincidence timing resolution (CTR) to sub-100 ps. The CTR can be further improved with an optimal bandwidth and minimized electronic noise in the readout circuit and this helps reduce the distortion of the fast signals generated from the TOF-PET detector. The purpose of this study was to develop an ultra-high frequency and fully-differential (UF-FD) readout circuit that minimizes distortion in the fast signals produced using TOF-PET detectors, and suppresses the impact of the electronic noise generated from the detector and front-end readout circuits. The proposed UF-FD readout circuit is composed of two differential amplifiers (time) and a current feedback operational amplifier (energy). The ultra-high frequency differential (7 GHz) amplifiers can reduce the common ground noise in the fully-differential mode and minimize the distortion in the fast signal. The CTR and energy resolution were measured to evaluate the performance of the UF-FD readout circuit. These results were compared with those obtained from a high-frequency and single ended readout circuit. The experiment results indicated that the UF-FD readout circuit proposed in this study could substantially improve the best achievable CTR of TOF-PET detectors.

Ultra High Resolution Shallow Acoustic Profiling using the Parametric Echo Sounder: Discrimination of Marine Contaminated Sediments and Burial Depth Inspection of the Submarine Cable (비선형 측심기를 이용한 초고해상 천부음향탐사: 오염퇴적층 구분과 해저케이블 매설 검측)

  • Jung, Seom-Kyu;Lee, Yong-Kuk;Kim, Seong-Ryul;Oh, Jae-Kyung
    • Journal of Advanced Marine Engineering and Technology
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    • v.34 no.8
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    • pp.1222-1229
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    • 2010
  • Compared to conventional high resolution acoustic profiling, ultra high resolution shallow acoustic profiling using parametric echo sounder is limited in penetration, yet it provides resolution suitable for detailed seabed investigation in the shallow waters. The parametric sub-bottom profiler system provides not only the exact determination of water depth, but also the detailed information about sediment layers and sub-bottom structures. Possible applications include dredging project, search of buried pipeline, ship wrecks, and other artificial objects through the detailed mapping of thickness and structure of the upper sedimentary layers. In this study, contaminated sediments were discriminated by the correlation of ultra high resolution profiles with geologic data. In addition, the burial depth of the submarine cable was measured by the interpretation of acoustic anomalies in the profiles.

Case Study of Ultra High Resolution Shallow Acoustic Profiling - Discrimination of the Marine Contaminated Sediment and Burial Depth Inspection of Submarine Cable (초고해상 천부음향탐사 사례 - 오염퇴적층 구분과 해저케이블 매설 검측)

  • Jung, Baek-Hoon;Lee, Yong-Kuk;Kim, Seong-Ryul;Shin, Dong-Hyeok;Jou, Hyeong-Tae
    • 한국지구물리탐사학회:학술대회논문집
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    • 2008.10a
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    • pp.79-84
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    • 2008
  • Compared to conventional high resolution acoustic profiling, ultra high resolution shallow acoustic profiling is limited in penetration, yet it provides resolution suitable for detailed seabed investigation in the shallow waters. Possible applications include search of buried pipeline, ship wrecks, and other artificial objects through the detailed mapping of thickness and structure of the upper sedimentary layers. In this study, contaminated sediments were discriminated by the correlation of ultra high resolution profiles with geologic data. In addition, the burial depth of submarine cable was measured by the interpretation of acoustic anomalies in the profiles.

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Development of Nano Stage for Ultra High Vacuum (진공용 나노스테이지 개발)

  • 홍원표;강은구;이석우;최헌종
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2004.04a
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    • pp.472-477
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    • 2004
  • Miniaturization is the central theme in modern fabrication technology. Many of the components used in modem products are becoming smaller and smaller. The direct write FIB technology has several advantages over contemporary micromachining technology, including better feature resolution with low lateral scattering and capability of mastless fabrication. Therefore, the application of focused ion beam(FIB) technology in micro fabrication has become increasingly popular. In recent model of FIB, however the feeding system has been a very coarse resolution of about a few ${\mu}{\textrm}{m}$. It is not unsuitable to the sputtering and the deposition to make the high-precision structure in micro or macro scale. Our research is the development of nano stage of 200mm strokes and l0nm resolutions. Also, this stage should be effectively operating in ultra high vacuum of about 1$\times$10$^{-5}$ pa. This paper presents the concept of nano stages and the discussion of the material treatment for ultra tush vacuum.

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Experimental Investigation of the Excited Xe Atoms Density in Ultra-high-resolution PDPs

  • Ishii, Keiji;Hirano, Yoshikuni;Murakami, Yukio
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.61-64
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    • 2008
  • We investigated experimentally the influence of the generation efficiency for excited Xe atoms on ultra-fine horizontal cell pitch AC PDPs. In the case of a 0.1 mm cell pitch, the sustain voltage increased; however, the generation efficiency was equal to or higher than for the conventional 0.22 mm cell pitch.

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Comparative study of data selection in data integration for 3D building reconstruction

  • Nakagawa, Masafumi;Shibasaki, Ryosuke
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.1393-1395
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    • 2003
  • In this research, we presented a data integration, which integrates ultra high resolution images and complementary data for 3D building reconstruction. In our method, as the ultra high resolution image, Three Line Sensor (TLS) images are used in combination with 2D digital maps, DSMs and both of them. Reconstructed 3D buildings, correctness rate and the accuracy of results were presented. As a result, optimized combination scheme of data sets , sensors and methods was proposed.

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Study on an Electrostatic Deflector for Ultra-miniaturized Microcolumn to Realize sub-10 nm Ultra-High Resolution and Wide Field of View (10 nm 이하 초고해상도와 광폭 관측시야를 구현하기 위한 극초소형 마이크로컬럼용 정전형 디플렉터 연구)

  • Lee, Hyung Woo;Lee, Young Bok;Oh, Tae-Sik
    • Journal of the Semiconductor & Display Technology
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    • v.20 no.4
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    • pp.29-37
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    • 2021
  • A 7 nm technology node using extreme ultraviolet lithography with a wavelength of 13.5 nm has been recently developed and applied to the semiconductor manufacturing process. Furthermore, the development of sub-3 nm technology nodes continues to be required. In this study, design factors of an electrostatic deflector for an ultra-miniaturized microcolumn system that can realize an electron wavelength of below 1.23 nm with an acceleration voltage of above 1 eV were investigated using a three-dimensional simulator. Particularly, the optimal design of the electrostatic octupole floating deflector was derived by optimizing the design elements and improving the driving method of the 1 keV low energy ultra-miniaturized microcolumn deflector. As a result, the entire wide field of view greater than 330 ㎛ at a working distance of 4 mm was realized with an ultra-high-resolution electron beam spot smaller than 10 nm. The results of this study are expected to be a basis technology for realizing a wafer-scale multi-array microcolumn system, which is expected to innovatively improve the throughput per unit time, which is the biggest drawback of electron beam lithography.