Journal of Physics: Conference Series

The International Conference on Physics and Technology of Advanced Materials (ICPTAM) 2024, held in conjunction with the 8^th Nanoscience and Nanotechnology Symposium (The 8^th NNS), took place from 7-10 October 2024 in Bali, Indonesia. With the overarching theme of "Advanced materials for future technology", this event brought together leading scientists, engineers, and professionals to discuss cutting-edge advancements in materials science and nanotechnology in celebration of international year of quantum science and technology. The event features 2 keynote speakers, 6 plenary speakers, 14 Invited speakers, and 90 contributed oral presenters, which come from several countries: Japan, Malaysia, Indonesia, South Korea, United Kingdom, Thailand, Taiwan, China, and India.

This year's conference provided a unique platform for participants to exchange knowledge, foster collaboration, and showcase innovative research on topics ranging from functional advanced materials, nanomaterials and nanotechnology, computational materials and modelling, nanoelectronics and nanodevices, energy materials, environmental and green materials, biomaterials and biodevices, quantum computing. This event also highlighted the crucial intersection of physics and materials science in shaping the future of technology and society.

We would like to express our sincere appreciation to Prof. Ir. Wahyu Srigutomo, Dean of the Faculty of Mathematics and Natural Sciences (FMIPA), Bandung Institute of Technology (ITB), for his invaluable support and guidance in preparing this scientific event. We also extend our heartfelt gratitude to the Physical Society of Indonesia, MRS-id, and the Department of Electrical Engineering, Udayana University, for their generous support and collaboration, which played a pivotal role in ensuring the success of this conference and creating an engaging and stimulating environment.

List of Advisory Board, Organizing Committee and Co-Organizing Committee are available in this Pdf.

All papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.

• Type of peer review: Double Anonymous

• Conference submission management system: Morressier

• Number of submissions received: 44

• Number of submissions sent for review: 44

• Number of submissions accepted: 38

• Acceptance Rate (Submissions Accepted / Submissions Received × 100): 97.7

• Average number of reviews per paper: 2

• Total number of reviewers involved: 8

• Contact person for queries:

Name: Fitri Aulia Permatasari

Email: fauliap@itb.ac.id

Affiliation: Institut Teknologi Bandung

To substitute an expensive inorganic dye, we green synthesized silver nanoparticles (AgNP) from Henna leaf extract as photosensitizers in DSSC. Henna dye was macerated for 24 hours using ethanol and filtered. To synthesize AgNPs, 10 ml of Henna dye was added to 90 ml of AgNO₃ solution (0.01 M, 0.05 M, and 0.3 M) and stirred. The FTIR analysis of the Henna dye showed three main Lawsone functional groups (O-H phenol, C=O, and C=C). As for AgNP, the new peak with high intensity emerged at a frequency of 1381 cm⁻¹, indicating the existence of Ag. The FTIR results upheld by the diffractogram of the AgNP that showed the crystalline peak at the 2θ position of (29.5, 32.6, 38.0, and 44.1)° associated with Miller indices of [210],[122],[111], and [200], respectively. The evaporation process increases the crystallinity of the AgNP. The nanoparticle size increased from 124.8 nm to 189.1 nm with the AgNO₃ concentration from 0.01M to 0.1M characterized by PSA. From the Henna dye absorbance spectrum, the peak at (238 and 370) nm originated from Lawsone molecules. AgNP showed the absorbance peak at 420 nm and 430 nm for unevaporated and evaporated Henna, respectively. These peaks' intensity increased with the irradiation time of up to 72 hours, associated with the shift of the plasmon surface resonance to the lower energy. The energy gap ranges from (2.08-2.09) eV and (2.58-3.69) eV for Henna dye and AgNP, respectively. It is in the range for light harvester material in DSSC.

The catalyst plays a key role in the growth of carbon nanotubes (CNTs) functioning as a guiding medium in the growth process. In this research, a nickel (Ni) catalyst was on a 7101 glass substrate using the thermal evaporation method. First, the effect of the thickness of the layer on its morphology was investigated, with thicknesses of 30, 40, 50, and 60 nm examined. An optimum density was obtained at 50 nm, at which the Ni particles attained the highest average diameter of 4.23 nm, and polydispersity index lower than the other samples, at 5.87%. Energy-dispersive X-ray spectroscopy results also showed a positive linear relationship between the thickness of the layer and both its mass and purity. Samples at this optimum thickness were annealed at 300 °C, 400 °C, or 500 °C for 4 hours to refine the crystal structure of the catalyst and produce small, uniform features. The samples annealed at 500 °C had the greatest average particle diameter of 5.92 nm and the lowest polydispersity of 5.76%. With a Ni catalyst that has a low polydispersity and thus a high level of uniformity, CNTs with a good level of uniformity and quality can also be obtained.

This study investigates the fundamental performance of Fe₃O₄/Polyvinylidene Fluoride (PVDF) magnetic nanofiber membranes as a magnetic field sensor. The nanofiber membranes were fabricated using the electrospinning method. The success of nanofiber formation was confirmed by XRD and FTIR characterizations. The nanofiber had an average diameter of 544.7 nm. The results of the magnetic property analysis showed that the nanofiber was superparamagnetic with a saturation magnetization value of 6.1 emu/g. Furthermore, the sensor sensitivity was also evaluated with a value of 0.98 mV/mT. Interestingly, the sensor's sensitivity shows good and prospective performance, making it suitable for new magnetic sensor candidates in the future.