東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Novel Materials for Picosecond Devic...

Cheng, Jing,

Linked to FindBook

Google Book

Amazon

博客來

Novel Materials for Picosecond Devices Ranging From Spintronics to Radiation Detection /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Novel Materials for Picosecond Devices Ranging From Spintronics to Radiation Detection // Jing Cheng.
Author:	Cheng, Jing,
Description:	1 electronic resource (134 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
Contained By:	Dissertations Abstracts International86-11B.
Subject:	Materials science. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31937518
ISBN:	9798315736349

Novel Materials for Picosecond Devices Ranging From Spintronics to Radiation Detection /
Cheng, Jing,

Novel Materials for Picosecond Devices Ranging From Spintronics to Radiation Detection /Jing Cheng. - 1 electronic resource (134 pages)

Source: Dissertations Abstracts International, Volume: 86-11, Section: B.

The advancement of ultrafast optoelectronic and spintronic devices requires novel materials with superior properties. This dissertation explores two key areas: CdMgTe (CMT) semiconductor-based detectors for ultrafast radiation detection and spintronic heterostructures for efficient terahertz (THz) emission.The primary goal of this work is to investigate and optimize material properties for high-speed detection and THz signal generation. For CMT-based detectors, the research focuses on understanding charge transport dynamics, bandgap tunability, and photoconductive response to enable ultrafast opticalto-X-ray detection. In the THz spintronics study, the goal is to explore novel metallic ferromagnetic heterostructures with and without a tunneling MgO layer, as well as FeCo/graphene bilayers, to enhance spin-charge conversion efficiency for THz emission.The methodology involves femtosecond pump-probe spectroscopy, time-resolved photoconductivity measurements, and THz time-domain spectroscopy (THz-TDS). The CMT device fabrication process includes cleanroom-based lithography and e-beam deposition techniques.Results show that CMT materials exhibit high carrier mobility and fast response times, making them very suitable for ultrafast detection of radiation ranging from optical to X-ray. Graphene-based spintronic heterostructures demonstrate strong THz emission with enhanced spin-orbit coupling. In the tunneling heterostructure, the MgO layer induces a change in the spin polarization of THz emission. These findings advance next-generation ultrafast photodetectors and THz spintronic emitters for high-speed communications, imaging, and spectroscopy.

English

ISBN: 9798315736349Subjects--Topical Terms:

543314
Materials science.
Subjects--Index Terms:

Picosecond devices

Novel Materials for Picosecond Devices Ranging From Spintronics to Radiation Detection /
LDR:03064nmm a22004453i 4500 001 2434115
005 20250905091347.5
006 m o d
007 cr|nu||||||||
008 261011s2025 miu||||||m |||||||eng d
020 $a 9798315736349
035 $a (MiAaPQD)AAI31937518
035 $a AAI31937518
040 $a MiAaPQD $b eng $c MiAaPQD $e rda
100 1 $a Cheng, Jing, $e author. $0 (orcid)0000-0003-2621-8166 $3 3823986
245 1 0 $a Novel Materials for Picosecond Devices Ranging From Spintronics to Radiation Detection / $c Jing Cheng.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2025
300 $a 1 electronic resource (134 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
500 $a Advisors: Sobolewski, Roman.
502 $b Ph.D. $c University of Rochester $d 2025.
520 $a The advancement of ultrafast optoelectronic and spintronic devices requires novel materials with superior properties. This dissertation explores two key areas: CdMgTe (CMT) semiconductor-based detectors for ultrafast radiation detection and spintronic heterostructures for efficient terahertz (THz) emission.The primary goal of this work is to investigate and optimize material properties for high-speed detection and THz signal generation. For CMT-based detectors, the research focuses on understanding charge transport dynamics, bandgap tunability, and photoconductive response to enable ultrafast opticalto-X-ray detection. In the THz spintronics study, the goal is to explore novel metallic ferromagnetic heterostructures with and without a tunneling MgO layer, as well as FeCo/graphene bilayers, to enhance spin-charge conversion efficiency for THz emission.The methodology involves femtosecond pump-probe spectroscopy, time-resolved photoconductivity measurements, and THz time-domain spectroscopy (THz-TDS). The CMT device fabrication process includes cleanroom-based lithography and e-beam deposition techniques.Results show that CMT materials exhibit high carrier mobility and fast response times, making them very suitable for ultrafast detection of radiation ranging from optical to X-ray. Graphene-based spintronic heterostructures demonstrate strong THz emission with enhanced spin-orbit coupling. In the tunneling heterostructure, the MgO layer induces a change in the spin polarization of THz emission. These findings advance next-generation ultrafast photodetectors and THz spintronic emitters for high-speed communications, imaging, and spectroscopy.
546 $a English
590 $a School code: 0188
650 4 $a Materials science. $3 543314
650 4 $a Applied physics. $3 3343996
650 4 $a Condensed matter physics. $3 3173567
650 4 $a Optics. $3 517925
653 $a Picosecond devices
653 $a Spintronics
653 $a Radiation detection
653 $a Terahertz
653 $a Spectroscopy
690 $a 0794
690 $a 0752
690 $a 0611
690 $a 0215
710 2 $a University of Rochester. $b Hajim School of Engineering and Applied Sciences. $e degree granting institution. $3 3823987
720 1 $a Sobolewski, Roman $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 86-11B.
790 $a 0188
791 $a Ph.D.
792 $a 2025
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31937518