A5045264044- Terahertz technology and applications
- Microwave Engineering and Waveguides
- Superconducting and THz Device Technology
- Photonic and Optical Devices
- Spectroscopy and Laser Applications
- Advanced DC-DC Converters
- Physical Unclonable Functions (PUFs) and Hardware Security
- Industrial Vision Systems and Defect Detection
- Multilevel Inverters and Converters
- Advanced biosensing and bioanalysis techniques
- Integrated Circuits and Semiconductor Failure Analysis
- Optimal Power Flow Distribution
- Real-time simulation and control systems
- Advanced Biosensing Techniques and Applications
- EEG and Brain-Computer Interfaces
- Islanding Detection in Power Systems
- Microgrid Control and Optimization
- Advancements in Photolithography Techniques
- GaN-based semiconductor devices and materials
- ECG Monitoring and Analysis
- Power Systems Fault Detection
- Smart Grid Energy Management
- Semiconductor materials and interfaces
- Advanced Steganography and Watermarking Techniques
- Power Line Communications and Noise
University of Connecticut
2015-2021
Siemens (United States)
2021
GlobalFoundries (United States)
2017
K.N.Toosi University of Technology
2011
Leibniz University Hannover
2011
Iran University of Science and Technology
2011
This paper presents a comprehensive theory for cohesive mathematical modeling and simulation of THz imaging systems. For the point spread function (PSF), system transmission variables such as spectrum, absorption coefficient, beam divergence, depth focus are incorporated into Gaussian distribution. The raster scanning process is mathematically modeled convolution object PSF. Simulated images achieved result. simulated images, compared to experimental show great accuracy in terms location...
GaN provides the highest electron saturation velocity, breakdown voltage, operation temperature, and thus combined frequency-power performance among commonly used semiconductors. The industrial need for compact, economical, high-resolution, high-power terahertz (THz) imaging spectroscopy systems are promoting utilization of implementing next generation THz systems. As it is reviewed, mentioned characteristics together with its capabilities providing high two-dimensional election densities...
THz radiation is capable of penetrating most nonmetallic materials and allows spectroscopy to be used image the interior structures constituent wide variety objects including Integrated circuits (ICs). The fact that many in spectral region have unique fingerprints provides an authentication platform distinguish between authentic counterfeit electronic components. Counterfeit ICs are investigated using a high-speed terahertz spectrometer with laser pulse duration 90 fs repetition rate 250 MHz...
This paper introduces a novel reconstruction approach for enhancing the resolution of terahertz (THz) images. For this purpose THz imaging equation is derived. According to our best knowledge we are reporting first by paper. universal far-field systems and can be used analyzing, describing modeling these systems. The geometry behavior Gaussian beams in region imply that FWHM diverge as frequencies decrease. Thus, measurement decreases lower frequencies. On other hand, depth penetration...
This paper reports our invented methods for detection of counterfeit electronic. These versatile techniques are also handy in quality control applications. Terahertz pulsed laser systems capable giving the material characteristics and thus make it possible to distinguish between materials used authentic components their clones. Components with defects can be distinguished section this manner. In work different refractive indices absorption coefficients were observed compared counterparts....
Terahertz radiation for inspection and fault detection has been of interest the semiconductor industry since first generation THz signals. Until recent hardware advances, systems lacked signal quality reliability use as an effective nondestructive testing (NDT) method. Incremental advances in sources, detectors, processing resulted successful applied-industrial NDT techniques on carbon fiber laminates, automotive coatings, counterfeit pharmaceutical tablets. Semiconductor verification...
In this work, terahertz images have been simulated from X-ray images. For aim the raster scanning process is modeled by a two dimensional convolution of modelled THz beam and image. The mathematical model has Gaussian function. variables in function are frequency beam, lateral location absorption coefficient object. accuracy proposed approach verified comparing results with actual
We review the advances of terahertz (THz) science and technology in biophotonics, including related challenges solutions. The main impediment to THz spectroscopy imaging this field is high absorption beam water. Hence, transmission thick wet tissue using radiation has generally been quite difficult. However, waves by water molecules so strong that increasing power source can lead structural functional changes tissues, solutions must go beyond a larger output. In terms resolution, superior...
Pollution and limited fossil fuels are the critical issues that lead HEVs to emerge. Nowadays new designs topologies of suggesting developing. In this paper we have dynamically modeled simulated a structure series-parallel HEV based on special machine named Transmotor applied it Toyota Prius 2004. This structure, generator planetary gear in common replaced with resulting simpler structure. performs as speed coupler between ICE wheels. Performance has been compared those given DOE reports for
Memristors are considered as one promising candidate for future memory and computing fabrics. However, the design of memristor-based circuits is under a critical challenge inevitable variations due to non-ideal fabrication processes resulted performance uncertainties. This kind randomness can be utilized in many other applications, such compressive sensing based data acquisition, which conducted by random matrix. Existing systems usually implemented digital CMOS circuits, suffer problems...
Semiconductor production has largely outsourced the design and fabrication of integrated circuits (ICs) to untrusted regions at expense hardware trust. Critical electronic equipment found in multiple domains including military, healthcare, power grid applications rely upon functionality ICs perform various computing, sensing, actuating operations. Hardware Trojans (HTs) are being increasingly defense systems amongst many critical industries that components from [1]. Industrial...
Stability is one of the main challenges in power grid. Power System Stablizer (PSS) system used to damp oscillations conventional grid, but it not adequate for all problems. Therefore, other compensator must be added increase reliability system. TCSC FACTS devices that can this purpose. In paper, controller tuned using Genetic Algorithm (GA) A fault a single machine simulated MATLAB software and performance with without proposed TSCS compared illustrate advantages
With fast growing of the photonics and power electronic systems, need for high power- frequency semiconductor devices is sensed tremendously. GaN provides highest electron saturation velocity, breakdown voltage operation temperature, thus combined frequency-power performance among commonly used semiconductors. achieving first THz image in just two decades ago, generation detection terahertz (THz) radiation one most emerging photonic areas. The industrial needs compact, economical, resolution...
From the initial days of establishment power system in late 20 century up to now, no fundamental improvement has been taken place distribution systems; on other hand many innovations have both demand and generation sides systems. These introduced new requirements which electric grids should be able support. The majority these held during recent decades. All made conventional somehow deficient. Our aim this presentation is develop next fulfills support all requirements. So at first we...
Contour detection of an object is a fundamental computer vision problem in image processing domain. The goal to find concrete boundary for pixel ownership between OOI (object-of-interest) and its corresponding background. However, contour extraction from low SN SEM images very challenging as different sources noise shadow the estimation underlying structural geometries. As device scaling continues 3nm node below, accurate CD geometries especially ADI (after developed inspection) utmost...
A relatively high Mg mole fraction of 7% is achieved using the cavitation effect under sonication to overcome low solubility ZnO-MgO at temperature. The confirmed by shift in near band emission free exciton photoluminescence spectroscopy room x-ray diffraction pattern has a large peak associated ZnO (002) from which c-lattice constant calculated be 5.1967Ǻ. nanorods (NRs) grown via sonochemical are compared nanowires (NWs) metal organic chemical vapor deposition (MOCVD) and hydrothermal...
In this work, engineered nanostructures (ENS) have been fabricated on the packed integrated circuits. Coding lookup tables were developed to assign different digits in numerical matrices nano-signatures. The are encrypted according advanced encryption standard (AES). matrix is ink printed components, and nanosignatures packaged of chips via electron beam lithography (EBL). This process be done manufacturer side supply chain. nanosignature accompany product its long journey global chain...
In this paper, a novel approach for marking integrated circuit packages with authentication nanosignatures is introduced. work, the signatures patterns are fabricated using electron beam lithography. Moreover, robustness of these against aging and humidity investigated. A recipe comprising image processing techniques measurement similarity indices has been developed. These proposed to be at manufacturer side supply chain. Then, they decoded consumer end. Thus, ambient environment requirement...
This paper publishes results of a recent study to design software module be implemented in dispatch centers electric utilities which is capable controlling certain aspects power shortage among AMI residential subscribers. It proposes new algorithm for modeling and managing subscribers during outage planning. In this study, index named consumption pattern merit defined evaluate each subscriber demand behavior toward economic technical performance grid encourage the modify its load profile...