Hasnizah Aris
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Preferred name
Hasnizah Aris
Official Name
Aris, Hasnizah
Alternative Name
Aris, H.
Aris, Hasnizah
Main Affiliation
Scopus Author ID
54784138200
Researcher ID
EJW-8531-2022

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Breast surface variation phase map analysis with digital fringe projection

2019 , Wan Mokhzani Wan Norhaimi , Zaliman Sauli , Hasnizah Aris , Mukhzeer Mohamad Shahimin , MAM Azmi , Wong, K. , Vithyacharan Retnasamy , Rajendaran Vairavan , Christopher R. Valenta , Masafumi Kimata

Breast carcinoma has become one of the most frequently diagnosed life threatening cancer among women. Early detection of breast cancer is highly essential with the aid of non-contact imaging modalities. Recently, non-contact breast imaging methods based on fringe projection has been developed for breast surface change inspection. In this work, a non-contact digital fringe projection imaging modality that utilizes phase shifting fringe patterns for identifying surface changes has been developed for investigating breast surface changes caused by the presence of tumors. A medical grade prosthetic breast was used as the experimental subject and subjugated to breast changes through the enlargement of a round shaped silicon catheter as a tumor. The fringes were projected onto the breast surface based on the three steps phase shift fringe projection. The fringe patterns consisted of a large fringe width to enable the breast image to be confined in fewer fringe patterns. A resulting phase map was obtained where pixel coordinate marking was conducted on the phase map breast image. Each of the pixel’s coordinate was compared to identify the location of the surface changes. A range of 2-9 pixel coordinate shifts from the 0.5 – 2 cm tumor growth were obtained from the results which demonstrated the capability of using phase map analysis from digital fringe projection in identifying surface changes of the women’s breast.

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Reliability comparison between solder and solderless flip chip interconnection in terms of high temperature storage

2020 , Lim Meng Rong , Zaliman Sauli , Vithyacharan Retnasamy , Hasnizah Aris

Flip chip (FC) has been used to replace wire bond due to its better performance. The 1st interconnection in FC plays an important role in terms of reliability study. Au/Cu stud bump capped with Sn tends to have Kirkendall void in the joint which can cause open circuit. This paper focuses on depth analysis on solderless chip bumping by using only Cu stud bump in the chip on chip (CoC) ball grid array (BGA) package. High temperature storage 150 °C has been applied on package and the result was compared with those the use of Au stud bump capped with Sn. The result shows that Cu stud bump has a better reliability in term of electrical resistance compared with Au stud bump capped with Sn. Therefore, solderless chip bumping has the potential to replace Au stud bump capped with Sn for FC BGA package.

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A study on the impact of silicon-on-nothing (SON) versus silicon-on-insulator (SOI) on the electrostatic performance of a transistor

2018-12 , Noraini Othman , Syarifah Norfaezah Sabki , Hasnizah Aris

In this work, we investigate the impact of employing silicon-on-nothing (SON) versus silicon-on-insulator (SOI) on the electrostatic performance of a transistor with various ground-plane (GP) structures of Lg = 10 nm through the use of Sentaurus TCAD simulator. The digital figure-of-merit (FoM) of interest includes the results of drain-induced barrier lowering (DIBL) which is a major indicator of a control of short-channel effects (SCEs). It is found that SOI devices produce a lower off-current (Ioff) as compared to SON. In terms of the different GP architectures, the introductions of various GP architectures were found to affect the values of DIBL in SOI whereas the impact on SON is negligible. It can be concluded that GP-B architectures with ground plane underneath the channel areas of SOI is most effective in suppressing substrate depletion effects as evidenced from the lowest DIBL produces.

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Simulation and investigation of Si-based piezoelectric micromachined ultrasonic transducer (PMUT) performances

2023-07 , Hasnizah Aris , Muhammad Nizam Bin Rosli , Mohammad Nuzaihan Md Nor , Zaliman Sauli , Wan Mokhdzani Wan Nor Haimi

Micro-electromechanical system (MEMS) based piezoelectric ultrasonic transducers for acoustic imaging of the surroundings are known as piezoelectric micromachined ultrasonic transducers (PMUTs). This research proposes a structural design of the PMUT with four fixed-guided beams. The beam is subjected to lateral loads, with vectors that are perpendicular to the longitudinal axis. This project simulated Piezoelectric Micromachined Ultrasonic Transducer (PMUT) with three different material properties i.e. Aluminium Nitride (AlN), Lead zirconate titanate (PZT) and Zinc Oxide (ZnO). Based on the study, it was found that reducing the beam dimensions and increasing the plate size will result in the first mode frequency reduction from 1.33x107 Hz to 3.74x106 Hz. Other than that, it was found that AlN PMUT experienced the maximum deflection of 6.3413 to 6.3478 μm when the loads applied in the range of 50 to 200 μN/m2. When the piezoelectric material changed to PZT, we obtained the maximum deflections of 0.3771 to 0.3786 μm when the same loads range applied to the PMUT. As for the ZnO PMUT, the maximum deflections obtained were in between 0.1702 μm to 0.1772 μm with the loads are maintained as in the loads applied to the AlN and PZT. This study proved the significant impact of altering the structural dimensions and material properties of PMUTs on their operational characteristics, specifically the first mode frequency and deflection behavior.

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Simulation and Investigation of Si-Based Piezoelectric Micromachined Ultrasonic Transducer (PMUT) Performances

2023-07-01 , Hasnizah Aris , Rosli M.N.B. , Mohammad Nuzaihan Md Nor , Zaliman Sauli , Norhaimi W.M.W.

Micro-electromechanical system (MEMS) based piezoelectric ultrasonic transducers for acoustic imaging of the surroundings are known as piezoelectric micromachined ultrasonic transducers (PMUTs). This research proposes a structural design of the PMUT with four fixed-guided beams. The beam is subjected to lateral loads, with vectors that are perpendicular to the longitudinal axis. This project simulated Piezoelectric Micromachined Ultrasonic Transducer (PMUT) with three different material properties i.e. Aluminium Nitride (AlN), Lead zirconate titanate (PZT) and Zinc Oxide (ZnO). Based on the study, it was found that reducing the beam dimensions and increasing the plate size will result in the first mode frequency reduction from 1.33x107 Hz to 3.74x106 Hz. Other than that, it was found that AlN PMUT experienced the maximum deflection of 6.3413 to 6.3478 µm when the loads applied in the range of 50 to 200 µN/m2. When the piezoelectric material changed to PZT, we obtained the maximum deflections of 0.3771 to 0.3786 µm when the same loads range applied to the PMUT. As for the ZnO PMUT, the maximum deflections obtained were in between 0.1702 µm to 0.1772 µm with the loads are maintained as in the loads applied to the AlN and PZT. This study proved the significant impact of altering the structural dimensions and material properties of PMUTs on their operational characteristics, specifically the first mode frequency and deflection behavior.

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Digital fringe projection system for round shaped breast tumor detection

2020-01-01 , Wan Mokhdzani Wan Nor Haimi , Zaliman Sauli , Hasnizah Aris , Vithyacharan Retnasamy , Rajendaran Vairavan , Muhamad Hafiz Ab Aziz

The digital fringe projection has been widely used in the field of surface imaging however its application in the field of body imaging especially for human breasts is still quite limited. Currently, the common imaging modality for breast tumor diagnoses are breast ultrasound and mammogram. There are advantages and limitations of using the mammogram and ultrasound in terms of the procedure of the process and the non-invasive nature of the procedure. In this work, an automated digital fringe projection system is developed to execute the imaging of surface changes of a helical shaped phantom breast. The fringe projection setup utilizes a computer, LCD projector, and a CCD camera. The tumor used was round-shaped with a diameter size of 1.5 and 2 cm. The fringe pattern was projected through the three-step phase shift where a resulting phase map was obtained. Results demonstrated that the system was able to identify an average pixel shift of five and ten on the breast surface caused by the presence of the round breast tumors.

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Effects of pH and concentration on the capability of E. coli and S. epidermidis with bentonite clay as biosorbent for the removal of Copper, Nickel and Lead from polluted water

2017 , Delia B. Senoro , Josel B. Godezano , Meng-Wei Wan , Lemmuel L. Tayo , Zaliman Sauli , Hasnizah Aris

This paper discusses the effects of pH and concentration on the capability of E. coli ATCC29522 and S. epidermidis RP62A biofilm with bentonite in removing divalent copper, nickel and lead from wastewater. Batch adsorption study at laboratory scale was utilized to evaluate the potential use of bacterial biomass (E. coli ATCC29522 and S. epidermidis RP62A) aided with geosynthetic clay (bentonite) for the removal of Cu2+, Ni2+and Pb2+. Results revealed that removal of Cu2+, Ni2+and Pb2+ by both types of organisms supported with bentonite were high in the first 4 hours of the experiment. This illustrates that the binding site on that particular time was abundant. Hence, the removal rate was evident at high concentration depicting the line adsorption equilibrium. It also revealed that S. epidermidis RP62A supported with bentonite had the highest affinity to Copper and Lead with Qm = 277.7 mg/g and 5.0075 mg/g, respectively. While E. coli ATCC 29522 had the highest affinity to Nickel (Qm= 58.82 mg/g). Hence, the sorption of Cu2+, Ni2+and Pb2+ onto E. coli ATCC29522 and S. epidermidis RP62A biofilm supported with bentonite clay occurred through monolayer chemisorption on the homogeneous surface of E. coli ATCC29522 and S. epidermidis RP62A biofilm with bentonite clay. Batch kinetics studies revealed that the sorption of Cu2+, Ni2+and Pb2+ onto E. coli ATCC29522 and S. epidermidis RP62A biofilm supported with bentonite clay was well described by a pseudo-second-order equation model of type 1 (R2 = 0.9999), which implies that chemisorption is the rate limiting step.

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Simulation and investigation of high-frequency Si-based piezoelectric micromachined ultrasonic transducer (PMUT) performances

2024-02-08 , Hasnizah Aris , Kaharuddin N.A.A. , Zaliman Sauli , Aziz A.A. , Wan Mokhdzani Wan Nor Haimi

The application of ultrasonic transducers is relying on the frequency which the transducers resonated. In the imaging application, an ultrasonic transducer should possess resonant frequency that higher than 2 MHz while in ultrasound testing, a range of 2 to 10 MHz is seeming to be adequate. This report is investigating the performance of high frequency Si-based PMUT with different piezoelectric material used in the structure. The piezoelectric materials used are Aluminium Nitride (AlN), Lead Zirconate Titanate (PZT), and Zinc Oxide (ZnO). Using the same dimensions, the obtained resonant frequencies of PMUT are 4.0370 MHz, 2.8224 MHz, and 3.4358 MHz for AlN, PZT and ZnO respectively.

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Publication

Breast surface variation phase map analysis with digital fringe projection

2019 , Wan Mokhzani Wan Norhaimi , Zaliman Sauli , Hasnizah Aris , Mukhzeer Mohamad Shahimin , MAM Azmi , K Wong , Vithyacharan Retnasamy , Rajendaran Vairavan , Christopher R. Valenta , Masafumi Kimata

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Analysis of different piezoelectric materials on the film bulk acoustic wave resonator

2023-12 , Nurul Izza Mohd Nor , Nazuhusna Khalid , Hasnizah Aris , M. S. Mispan , N. Aiman Syahmi

The performance of film bulk acoustic wave resonators (FBAR) is greatly dependent on the choice of piezoelectric materials. Different piezoelectric materials have distinct properties that can impact the performance of FBAR. Hence, this work presents the analysis of three different piezoelectric materials which are aluminum nitride (AlN), scandium aluminum nitride (ScAlN) and zinc oxide (ZnO) on the performance of FBARs working at resonance frequencies of 6 GHz until 10 GHz. The one-dimensional (1-D) modelling is implemented to characterize the effects of these materials on the quality (Q) factor, electromechanical coupling coefficient (k2eff) and bandwidth (BW). It is determined that employing ScAlN in FBAR results in the highest Q factor, ranges from 628 to 1047 while maintaining a relatively compact area (25 μm × 25 μm) and thickness (430 nm to 720 nm). However, ScAlN yields the narrowest BW, measuring 0.11 GHz at 6 GHz, as opposed to AlN and ZnO, which exhibit broader bandwidths of 0.16 GHz and 0.23 GHz, respectively.

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