A5072752736- Advancements in Semiconductor Devices and Circuit Design
- Semiconductor materials and devices
- Nanowire Synthesis and Applications
- Hearing, Cochlea, Tinnitus, Genetics
- Hearing Loss and Rehabilitation
- Ear Surgery and Otitis Media
- Noise Effects and Management
- Facial Nerve Paralysis Treatment and Research
- Ferroelectric and Negative Capacitance Devices
- Vestibular and auditory disorders
- Speech and Audio Processing
- Speech Recognition and Synthesis
- Thin-Film Transistor Technologies
- Music and Audio Processing
- Foreign Body Medical Cases
- Connexins and lens biology
- Trigeminal Neuralgia and Treatments
- Barrier Structure and Function Studies
- Coagulation, Bradykinin, Polyphosphates, and Angioedema
- Thyroid and Parathyroid Surgery
- Congenital heart defects research
- Cardiac, Anesthesia and Surgical Outcomes
- Traumatic Ocular and Foreign Body Injuries
- Assistive Technology in Communication and Mobility
- Potassium and Related Disorders
Chungbuk National University Hospital
2021-2024
Seoul Metropolitan Government
2023
Boramae Medical Center
2014-2023
Seoul National University
2014-2023
Seoul National University Hospital
2019-2022
Chungnam National University Hospital
2020-2022
Chungnam National University
2020-2021
Seoul National University Bundang Hospital
2019-2020
Korea University
2014-2019
Hanbat National University
2016-2018
In this study, we propose newly designed feedback field-effect transistors that utilize the positive of charge carriers in single-gated silicon channels to achieve steep switching behaviors. The band diagram, I-V characteristics, subthreshold swing, and on/off current ratio are analyzed using a commercial device simulator. Our proposed exhibit swings less than 0.1 mV dec-1, an approximately 1011, on-current 10-4 A at room temperature, demonstrating characteristics superior those other...
Tinnitus retraining therapy (TRT) is a standard treatment for tinnitus that consists of directive counseling and sound therapy. However, it based on face-to-face education time-consuming protocol. Smart device-based TRT (smart-TRT) seems to have many advantages, but the efficacy this new has been questioned.The aim study was compare between smart-TRT conventional (conv-TRT).We recruited 84 patients with tinnitus. Results were compared 42 who received control participants conv-TRT. An...
In this study, we demonstrate the abruptly steep-switching characteristics of a feedback field-effect transistor (FBFET) with channel consisting p+–i–n+ Si nanowire (NW) and charge spacers discrete nanocrystals on plastic substrate. The NW FBFET shows superior switching such as an on/off current ratio ∼105 average subthreshold swing (SS) 30.2 mV/dec at room temperature. Moreover, SS threshold voltage values can be adjusted by programming. These sharp originate from positive loop generated...
Abstract In this study, we demonstrate the static random access memory (SRAM) characteristics generated by weak impact ionization in bendable field-effect transistors (FETs) with n + -p-n silicon nanowire (SiNW) channels. Our SiNW FETs show not only superior switching such as an on/off current ratio of ~10 5 and steep subthreshold swing (~5 mV/dec) but also reliable SRAM characteristics. The originate from positive feedback loops ionization. This paper describes detail operating mechanism...
Although tinnitus retraining therapy (TRT) based on Jastreboff's classical neurophysiological model is efficacious in most patients, its effects the cortical activity changes responsible for improvement of are still unclear. In this study, we compared pre- and post-TRT resting-state quantitative electroencephalography (rs-qEEG) findings to identify power that could explain TRT-induced improvements. Thirty-seven patients with severe were enrolled rs-qEEG data recorded before initial TRT...
We investigated the association of proton pump inhibitor (PPI) use with risk stroke and ischemic heart disease (IHD). The Korean National Health Insurance Service-Health Screening cohort from 2002 to 2003, participants which were followed up until 2019, was used. In study I, 45,905 who diagnosed matched 91,810 control I participants. history PPI medication examined. II, 40,928 IHD 81,856 II both previous A propensity score overlap-weighted multivariable logistic regression analysis conducted...
To investigate the effects of cavitating lesions involving internal auditory canal (IAC) in subjects with cochlear otosclerosis regard to poststapedotomy hearing outcome.Retrospective study.Tertiary referral center.A retrospective chart review 134 treated from January 2011 June 2017 at Seoul National University Bundang Hospital was conducted. Sixteen (23 ears) temporal bone computed tomography (TBCT)-confirmed who underwent stapedotomy were included study.Pure tone audiometry (PTA) (i.e.,...
We demonstrate the nonvolatile and volatile memory characteristics of a gate-all-around silicon nanowire feedback field-effect transistor (FBFET) with nitride charge-storage layer analyzed by commercial TCAD simulator. Our FBFET exhibits threshold voltage window 0.76 V programming/erasing time 1 μs in mode. investigated delay read operations accumulated charges intrinsic channel region this Moreover, sensing margin 6.3 μA read/write speed 10 ns an outstanding retention time, as well...
Objectives: Recent studies have shown that cochlear duct length (CDL) varies among individuals and could significantly influence the final position of electrode its trajectory in cochlea. Given this, we hypothesized degree modiolar proximity novel slim electrodes, such as CI532 CI632, can also be affected by CDL. To test this hypothesis, retrospectively evaluated individual CDL to determine if there is any significant correlation with proximity. Methods: Fifty-one ears from 38 subjects...
Dual-functional devices based on gated p-i-n diodes are proposed in this simulation study. The dual-functional function not only as n-channel tunneling field-effect transistors (n-TFETs) but also p-channel impact-ionization FETs (p-IFETs), depending the bias conditions. In study, <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">I–V</i> characteristics, subthreshold swing ( xmlns:xlink="http://www.w3.org/1999/xlink">SS</i> ), ON/OFF current...
Abstract Background Post‐thyroidectomy hematoma (PH) is uncommon but may be a life‐threatening complication. We explored perioperative risk factors for PH, with emphasis on hemodynamics, pain, and medications. Methods A retrospective case‐control study was performed matching age, sex, type of operation. Univariate multivariate analyses were to identify independent factors. Results In 1780 thyroid surgeries, 22 cases PH detected (1.24%). Antithrombotic agent usage, numeric rating scale (NRS)...
Determining the etiology of severe-to-profound sensorineural hearing loss (SP-SNHL) in pediatric subjects is particularly important aiding decision for auditory rehabilitation. We aimed to update etiologic spectrum SP-SNHL by combining internal canal (IAC)-MRI with comprehensive and state-of-the-art genetic testings. From May 2013 September 2020, 119 cochlear implantees under age 15 years were all prospectively recruited. They subjected tests, including exome sequencing, IAC-MRI diagnosis....
Abstract The switchable‐memory operation of a feedback silicon nanowire transistor with dual‐gate structure is demonstrated. single exhibits volatile memory characteristics retention time longer than 3600 s, as well switching capability subthreshold swing lower 7 mV dec −1 . A gate‐controlled window forms around gate voltage 0 V owing to the positive loop in channel region, allowing program/erase endurance more 1000 cycles. transistor, capability, opens up possibility overcoming not only...
In this paper, we demonstrate nondestructive readout memory characteristics of a bistable resistor (biristor) with an n <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> -p-n Si nanowire (SiNW) channel on bendable substrate. The SiNW is fabricated using top-down route, which compatible the current complementary metal-oxide-semiconductor technology. biristor shows outstanding such as retention time 10 s and sensing margin ~23-μA at room...
Background and objectives: We review the intraoperative findings postoperative outcomes of ossiculoplasty in subjects with second pharyngeal arch (SPA)-derived ossicular anomalies. summarize potential complications recommend precautions that may reduce risk fracture. Materials Methods: Twenty-four patients SPA-derived anomalies were included, pre- audiometric results compared. Results: The mean air conduction threshold (56.0 ± 12.4 dB HL) was significantly improved 1 month (27.6 10.1 6...
Delivery of substances into the inner ear via local routes is increasingly being used in clinical treatment. Studies have focused on methods to increase permeability through round window membrane (RWM) and enhance drug diffusion ear. However, applications those been unclear few studies investigated efficacy an injury model. Here, we employed medium chain fatty acid caprate, a biologically safe, clinically applicable substance, modulate tight junctions RWM. Intratympanic treatment sodium...
In this study, an emotional speech database called Hanbat Emotional Database (HEMO) was constructed using movie and drama scenes in which emotion is abundantly expressed by professional actors. HEMO consists of 454 samples classified into seven categories such as anger, happiness, sadness, disgust, surprise, fear, neutral. order to evaluate the performance HEMO, consistent experiments were conducted based on HMM (Hidden Markov Model) GMM (Gaussian Mixture for both Berlin Speech (EMO). showed...
In this paper, we describe the feedback and tunneling operations of a dual top gate field-effect transistor (FET) with p +-i-n + doped silicon nanowire channel. The functions selectively in either FET (FBFET) or mode by modulating source-to-drain voltage, it features an outstanding subthreshold swing characteristic 6.15 mV dec-1 on/off current ratio (I on/I off) approximately 106 operating 41.3 I off ∼107 mode. Moreover, our device FBFET operation has memory characteristics retention time...