A5083544947- Quantum and electron transport phenomena
- Advancements in Semiconductor Devices and Circuit Design
- Surface and Thin Film Phenomena
- Quantum Information and Cryptography
- Semiconductor materials and devices
- Epigenetics and DNA Methylation
- Glioma Diagnosis and Treatment
- Semiconductor Quantum Structures and Devices
- Graphene research and applications
- Cancer Genomics and Diagnostics
- Physics of Superconductivity and Magnetism
- Integrated Circuits and Semiconductor Failure Analysis
- Topological Materials and Phenomena
- Pelvic floor disorders treatments
- Tissue Engineering and Regenerative Medicine
- Advanced Electrical Measurement Techniques
- Quantum, superfluid, helium dynamics
- Magnetic Field Sensors Techniques
- Diverticular Disease and Complications
- Surgical Simulation and Training
- Cancer-related molecular mechanisms research
- Energy Efficient Wireless Sensor Networks
- Plasma Applications and Diagnostics
- Bioinformatics and Genomic Networks
- Plasma Diagnostics and Applications
Weizmann Institute of Science
2019-2024
University of Michigan–Ann Arbor
2023
Pusan National University
2012-2020
Gangnam Severance Hospital
2019
Yonsei University
2019
Seoul National University
2015
University of California, San Francisco
2012-2014
Neurological Surgery
2012
University of Seoul
2008
Samsung (South Korea)
1994-2002
Abstract Despite its ubiquity in quantum computation and information, a universally applicable definition of entanglement remains elusive. The challenge is further accentuated when associated with other key themes, e.g., interference statistics. Here, we introduce two novel motifs that characterize the interplay statistics: an ‘entanglement pointer’ ‘statistics-induced entropy’. provide quantitative description statistics-induced entanglement: (i) they are finite only presence underlined by...
Abstract A new and efficient algorithm using the geometry conditions between satellite tracking receivers is proposed to determine receiver differential code bias (DCB) permanent reference stations. This method does not require a traditional single-layer ionosphere model can be used for estimating DCBs of in regional network as long one already known. The main underlying rationale this that magnitude signal delay caused by is, under normal conditions, highly dependent on geometric range...
Over the past two decades, epigenetics has evolved into a key concept for understanding regulation of gene expression. Among many epigenetic mechanisms, covalent modifications such as acetylation and methylation lysine residues on core histones emerged major mechanism in regulation. Here, we present database histone-modifying enzymes (dbHiMo; http://hme.riceblast.snu.ac.kr/ ) aimed at facilitating functional comparative analysis (HMEs). HMEs were identified by applying search pipeline built...
This work demonstrates that electron pairing can be achieved purely by the Coulomb interactions in a triple quantum dot. Such mechanism is different from of Cooper pair. The two dots dot mediated other (third) dot, when third strongly couples with via repulsion. By measuring conductance through each individual authors find degeneracy for pairing, condition degeneracy, and nontrivial transport behavior pairing. These findings may exploited to design devices correlations functionalities.
Multi-valued logic gates, which can handle quaternary numbers as inputs, are developed by exploiting the ballistic transport properties of quantum point contacts in series. The principle a gate that finds minimum two number inputs is demonstrated. device scalable to allow multiple makes it possible find single operation. Also, half-adder for First, an adder adds up and outputs sum Second, express into digits [Carry (first digit) Sum (second digit)] All gates presented this paper be extended...
Quasi-particles in fractional quantum Hall states are collective excitations that carry charge and anyonic statistics. While the affects semi-classical characteristics such as shot noise charging energies, statistics is most notable interference phenomena. In this study, we utilize a versatile bilayer graphene-based Fabry-P\'erot Interferometer (FPI) facilitates study of broad spectrum operating regimes, from Coulomb-dominated to Aharonov-Bohm, for both integer states. Focusing on $\nu$=$1...
The fractional quantum Hall (FQH) effect provides a paradigmatic example of topological phase matter. FQH edges are theoretically described via models belonging to the class chiral Luttinger liquid (CLL) theories [1 (Wen, 2007)]. These predict exotic properties excitations, such as charge and statistics. Despite theoretical confidence in this description qualitative experimental confirmations, quantitative evidence for CLL behaviour is scarce. In work, we study tunnelling between edge modes...
Our quantum-dot (QD) electron pump has uniqueness in design that the QD potential shape can be manipulated, especially its depth controlled by a plunger gate. We find there exist strong correlations between of and upper frequency limit, fm, when modulating microwave power is fixed. As deepened, fm shows decreasing characteristics while flatness 1st current plateau increased. have semi-quantitatively analyzed these using notion so-called “non-adiabatic Coulomb blockade gap energy,” ΔELU. ΔELU...
Transmission through a quantum point contact (QPC) in the Hall regime usually exhibits multiple resonances as function of gate voltage and high nonlinearity bias. Such behavior is unpredictable changes sample by sample. Here, we report observation sharp transition transmission an open QPC at finite bias, which was observed consistently for all tested QPCs. It found that bias dependence can be fitted to Fermi-Dirac distribution universal scaling. The temperature matches quite nicely electron...
Conventional navigation systems used in transsphenoidal pituitary surgery have limitations that may lead to organ damage, including long image registration time, absence of alarms when approaching vital organs and lack 3-D model information. To resolve the problems conventional systems, this study proposes a U-Net-based, automatic segmentation algorithm for optical nerves internal carotid arteries, by training patient computed tomography angiography images. The authors also developed...
<title>Abstract</title> Quasi-particles in fractional quantum Hall states are collective excitations that carry charge and anyonic statistics. While the affects semi-classical characteristics such as shot noise charging energies, statistics is most notable interference phenomena. In this study, we utilize a versatile bilayer graphene-based Fabry-Pérot Interferometer (FPI) facilitates study of broad spectrum operating regimes, from Coulomb-dominated to Aharonov-Bohm, for both integer states....
Ta/sub 2/O/sub 5/ dielectric on poly-Si cylinder capacitors, chemical-mechanical polishing (CMP) planarization, pure W bit-line, and Al reflow were integrated into a highly manufacturable DRAM process technology. This technology provided larger margin, higher reliability, better design flexibility. In addition, the critical steps of new has been reduced by 25% those conventional process. The manufacturability proven applying it to 16 Mbit density DRAMs with 256 rule (0.28 /spl mu/m).< <ETX...
We characterized KRISS precision measurement system by measuring the Allan deviation of quantized current generated GaAs/AIGaAs gate-tunable electron pumps, where was amplified ultrastable low-nose amplifier (ULCA) developed PTB. The a phosphor bronze wire generally used at cryogenic temperature showed white noise level about 18 fA Hz-1I2. pump improved factor 4 with specific choice cables.
We report raster scan multiplexed charge-stability diagram measurements for tuning multiple gate-defined quantum dots in GaAs/AlGaAs heterostructures. evaluate the charge sensitivity of point contact (QPC) both radio frequency (rf)-reflectometry and direct current-transport modes, where we measure signal-to-noise ratio (SNR) 40 rf-QPC with an integration time per pixel 10 ms, corresponding to 1.14 ms resolving single electron transition few regime. The high SNR reasonable allows fast...
Abstract Correlations of partitioned particles carry essential information about their quantumness [1]. Partitioning full beams charged leads to current fluctuations, with autocorrelation (AC, shot noise) revealing the particles’ charge [2]. This is not case when particle are diluted. Bosons or fermions will exhibit antibunching (due discreteness) [3, 4]. However, partitioning anyons, such as quasiparticles in fractional quantum Hall states (FQH), AC unveils an aspect exchange statistics:...
To predict flow fields and chemical agent dispersion in urban area, wind tunnel experiments was performed. The adopted MS (methyl salicylate) because the real is unsafe. exact concentration of methyl salicylate generated by commercial gas generator (STI-2500) three different obstacle shapes were applied (i.e., rectangular, cylinder pyramid). measured with qualified ion mobility sensor chromatography. data necessary for virtual test method obtained.
Low-grade gliomas frequently recur after surgical resection and may undergo malignant progression to a higher grade with significantly worse prognosis. Understanding the origin evolution of recurrences is critical for effectively treating residual disease delay or prevent recurrence. Here, we extend previous work by sequencing exomes over 30 initial low-grade their patient-matched reconstruct patterns clonal evolution. We also sequence multiple spatially distinct samples from both recurrent...
BACKGROUND: The clonal evolution of tumor cell populations can be reconstructed from patterns genetic alterations. In contrast, epigenetic states are reversible and sensitive to the microenvironment, presumably precluding use epigenetics discover sub-clonal tumors. We recently used mutation learn how low grade gliomas evolve over time, also discovered that temozolomide treatment LGG is associated with TMZ-induced hypermutation malignant progression GBM (BE Johnson et al, Science, 2014)....