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Day 1 : Mar 23,2026
Day 1
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Speaker Sessions
Biography:
Camilo Cadena is a Philosopher and an undergraduate Physics student at the Industrial University of Santander. He is a part of the Optics and Signal Processing Research Group, where I focus on polarization and birefringence, working with geometric algebras and quaternions, as well as Python-based computational tools. He is particularly interested in advancing technology in these research areas

Abstract:
In the characterization of a birefringent medium, two fundamental groups of parameters can be distinguished. On one hand, the intrinsic parameters describe the medium’s inherent birefringence —encompassing the elliptical retardation, the azimuth, and the ellipticity of the principal modes. On the other hand, the equivalent parameters, derived from Jones’ Theorem I, decompose the elliptical birefringence into a combination of equivalent linear birefringence (with its corresponding retardation and azimuth) and equivalent circular birefringence (optical activity). To date, most experimental methods tend to measure one or the other group of parameters separately, which can lead to ambiguous results due to the non-injective relationships between them. In this work, we present a methodology that simultaneously and independently determines both sets of parameters without ambiguity, by means of a polarimetric and geometric analysis on the Poincaré sphere. Furthermore, we introduce a clear physical interpretation of the equivalent parameters based on the Law of Elliptical Birefringents, which enables the determination of all possible emerging polarization states of the birefringent medium without requiring its rotation.The effectiveness of this proposal was validated in devices with different birefringence configurations, showing agreement among measurements, theoretical results, and other experiments. Thus, we demonstrate that jointly determining the intrinsic and equivalent parameters provides a comprehensive description of birefringence, avoiding common ambiguities and enhancing potential applications in metrology, polarization control, and optical device design.
Biography:
Dr. Bo Qu is currently an associate professor and doctoral supervisor at Peking University. He specializes in the field of organic optoelectronics (e.g., perovskite solar cells). To date, he has published over 100 SCI-indexed papers in international academic journals. Among them, more than 40 papers have been published in internationally authoritative journals such as Science, Chemical Society Reviews, Adv. Science, Small and Adv. Func. Mater., etc.

Abstract:
Perovskite solar cells (PSCs) have attracted broad attention. The certified efficiency has exceeded 26%, which is comparable to silicon-based counterparts. However, the environmental problems caused by the lead in perovskite restrict their large-scale applications. If a monovalent metal ion and a trivalent metal ion are used instead of two lead ions, a double perovskite A2M+M3+X6 is realized. In order to resolve toxicity of lead-based perovskites, Bo Qu group prepared PSCs based on lead-free double perovskite Cs2AgBiBr6 in 2017 (Adv. Sci. 2018, 5, 1700759), and then fabricated semi-transparent solar cells with an average visible light transmittance of  73% ( Sol. RRL 2020, 4, 2000056). However, the relatively large bandgap (~2.0 eV) of  Cs2AgBiBr6 hinders its optoelectronic applications in longer wavelength bands of visible and near-infrared regions. We replaced some of Bi elements in Cs2AgBiBr6 with trace doping (~1%) of iron (Adv. Function. Mater. 2021, 322109891) and ruthenium (Mater. Adv. 2022, 3, 4932) to broaden its absorption range to near-infrared region (1200-1350 nm). The above single crystal materials exhibit excellent near-infrared light detection. And we were invited to write a review article (J. Phys. Chem. Lett. 2023, 14, 5310). At present, the photovoltaic performance of lead-free perovskite still does not meet theoretical expectations. We have summarized the problems that exist in different lead-free perovskites (Mater. Today Energy 2018, 8, 157; Adv. Energy Mater. 2019, 1902496) and these limitations were mainly ascribed to low carrier transport and self trapping effects caused by low structural or electronic dimension of lead-free perovskites, as well as the non-radiative recombination. The bottleneck in the application of lead-free perovskite photovoltaics can be overcome by regulating the structural or electronic dimensions, and we were invited to publish a cover article in Chemical Society Reviews (2024, 531769-1788) entitled "Breaking the Bottleneck of Lead Free Perovskite Solar Cells through Dimensional Modulation". On the other hand, ?black-phase formamidinium lead iodide (a-FAPbI3) perovskites are the desired phase for photovoltaic applications, but water can trigger formation of photoinactive impurity phases. The conventional coordinative solvent dimethyl sulfoxide (DMSO) promoted photoinactive impurity phases formation under high relative humidity (RH) conditions because of its hygroscopic nature. Recently, we introduced chlorine-containing organic molecules to form a capping layer that blocked moisture penetration while preserving DMSO-based complexes to regulate crystal growth. We report PCE of >24.5% for perovskite solar cells fabricated across an RH range of 20 to 60%, and 23.4% at 80% RH. The unencapsulated device retained 96% of its initial performance in air (with 40 to 60% RH) after 500-hour maximum power point operation.(Science, 2024, 385, 161-167).
Biography:
Dr. Nikolai Haslebner is currently Head of Product Management at TriLite Technologies in Austria, a company producing the world’s smallest projection display. He holds academic credentials from the Technical University of Graz (TU Graz), where he also received his PhD in technical physics and has worked across product leadership, strategy, and technology domains. His career includes overseeing product development, cross-functional coordination, and market growth initiatives while working for companies like AT&S AG, NXP and ams Osram. He contributed to several patents such as circuit board technology.

Abstract:
TriLite designs and builds the world’s smallest projection display (~1 cubic cm) based on laser beam technology (LBS) for various applications spanning from augmented reality to the automotive. TriLite’s technology is based on compact optical solutions, proprietary, multi-parameter algorithms, which deploy advanced machine learning algorithms to offer the LBS modules of unprecedented size, weight and image quality. Our award-winning, compact and lightweight Trixel® 3 LBS display engine combines a single two-dimensional MEMS mirror, unified RGB laser module approach, micro-optics, and a unique Trajectory Control Module that shifts the calibration complexity from hardware to software. Our projection display works in all environments, ranging from the direct sunlight to the dark rooms.  It offers low power consumption, adequate contrast and brightness, full color  (? 214 % over sRGB), and low latency to ensure that the projected augmented reality images naturally integrate with the real-object surroundings and are prone to spatial motion (a key characteristic to avoid the motion sickness). Trixel 3 has been designed from the ground-up concept to mass-manufacturing and is fully compatible with the state-of-the-art waveguides without requiring the projection or relay optics, making an entire compact and appealing wearable system. The presentation will also focus on advantages of the LBS technology in comparison with other existing displays such as for example, micro-LED (µLED), LCOS and OLED displays. 
Biography:
Denise Cekaunaskas Kalil Lauand is a physiotherapist with expertise in orthopedic physical therapy, prevention, and rehabilitation of musculoskeletal disorders. She earned her Bachelor’s degree in Physical Therapy from Universidade Paulista (UNIP) in 2004 and a Master’s degree in Rehabilitation Sciences from Universidade Nove de Julho (UNINOVE) in 2025. She is currently a doctoral student in Rehabilitation Sciences at UNINOVE, under the supervision of Professor Dr. Raquel Agnelli Mesquita-Ferrari.

Abstract:
Neck pain, defined as painful conditions associated with the cervical spine, is a common syndrome that often causes pain and restricted movement. Among the available therapeutic approaches, manual therapies are widely used and have shown positive outcomes in many cases. The pompage technique, a form of manual therapy, aims to reduce pain and improve cervical range of motion (ROM), motor control, and overall function. Photobiomodulation (PBM) using LEDs represents another non-invasive and easily applied modality with potential therapeutic benefits. This randomized, controlled, double-blind clinical trial investigated the effects of pompage, with or without LED-based PBM therapy, on cervical ROM in patients with chronic nonspecific neck pain. Participants of both sexes, aged 18–62 years, were screened, and eight individuals completed the study protocol. They were randomized into two groups: (1) Pompage group (n=5), receiving only manual therapy with pompage; and (2) Pompage + LED group (n=3), receiving pompage followed by PBM therapy with an LED plate (264 diodes: 132 red at 660 nm and 132 infrared at 850 nm; 8 mW each; 9.6 J/cm²; 16 mW/cm²; 10 minutes per session). All participants attended 10 sessions, twice weekly. Cervical ROM was assessed with a goniometer before and after the intervention. Results: The pompage group showed a significant improvement in cervical extension and left lateral rotation ROM at the end of the treatment compared to baseline (P=0.02). The Pompage + LED group did not show statistically significant differences, although mean improvements were observed. Conclusion: Pompage alone promoted significant gains in cervical ROM in patients with chronic nonspecific neck pain, whereas the addition of LED PBM did not yield further statistically significant benefits.
Biography: 
Kimberlly Gomes is a biomedical professional with academic training in Clinical Analysis and Advanced Aesthetics. She has built solid expertise in molecular biology, including biological sample processing, nucleic acid extraction, and the use of both manual and automated methodologies. Her professional experience in high-demand clinical laboratories further strengthened her skills in biochemical and hematological analyses, urgent and emergency routines, and rigorous validation and quality control procedures—bridging everyday practice with scientific inquiry. Currently a Master’s student in Rehabilitation Sciences at Universidade Nove de Julho (São Paulo, Brazil), Kimberlly conducts in vitro research using C2C12 cells exposed to hyperglycemic conditions and treated with photobiomodulation. Her work explores cellular mechanisms and the therapeutic potential of light in metabolic disorders related to diabetes. Passionate about innovation and driven by scientific challenges, she aims to contribute to advancing health and rehabilitation through evidence-based discoveries.

Abstract:
Introduction: Chronic hyperglycemia is associated with metabolic changes that contribute to complications of diabetes mellitus, including insulin resistance and reduced glucose uptake. In vitro models using the C2C12 myoblasts lineage are widely used to investigate cellular mechanisms triggered by excess glucose, especially in muscle differentiation processes. Photobiomodulation (PBM), applied by means of low-level laser irradiation, has been shown to be able to modulate mitochondrial bioenergetics, reduce pro-inflammatory markers, and favor cell viability and differentiation. However, there is still a paucity of studies investigating the effects of PBM in conditions of metabolic stress, such as hyperglycemia. The present study aims to evaluate whether PBM can attenuate changes induced by the hyperglycemic condition in C2C12 cells cultured in vitro. C2C12 cells will be exposed to glucose concentrations of 5.5 mM (control), 25 mM, 45 mM, and 60 mM, with or without PBM treatment. Irradiation will be performed using an AlGaAs diode laser (780 nm, 70 mW, 26.25 J/cm², 15 s exposure time), followed by incubation for 24 h, 48 h, and 72 h in 96-well plates (10? cells/well). Cell viability will be assessed using the MTT assay, ATP synthesis will be measured with a luminescence-based kit, and cellular morphology will also be evaluated. Previous studies have demonstrated beneficial effects of PBM on mitochondrial function and gene expression in C2C12 cells, supporting the chosen model and experimental parameters. It is hypothesized that PBM will attenuate the deleterious effects of hyperglycemia, preserving functional characteristics and promoting cellular metabolism in C2C12. Statistical analysis: Data will be analyzed using ANOVA followed by Tukey’s post hoc test.
Biography:
Mohammad Hossein Shaker, born in Tehran in 1998, moved to Brazil in 2019 and earned his Dentistry degree from Universidade Nove de Julho (UNINOVE) in 2023. He is currently pursuing a Master’s in Biophotonics Medicine at UNINOVE under Prof. Dr. Cinthya Cosme Gutierrez Duran, focusing on lasers and photobiomodulation in health sciences. His research includes laser therapy for post-operative pain, dental crowding treatments (CPAQV Journal, 2024), and the effects of photobiomodulation on oxidative stress in macrophages. He has also trained in human cadaver dissection and anatomical studies at the University of São Paulo (USP) under the supervision of Dr. Edson Aparecido Liberti. He has also designed clinical protocols for rhinoplasty recovery and platelet viability. Professionally, he has experience in São Paulo dental clinics with post-surgical laser therapy and PRP applications, and training in anatomical dissection at USP. His current focus is macrophage modulation and innovative therapeutic strategies for inflammation and oxidative stress control.

Abstract:
Oxidative stress is a key factor in the pathogenesis of chronic inflammatory diseases, leading to cellular dysfunction and increased production of pro-inflammatory mediators. Macrophages play a central role in the immune response, and their activation under oxidative stress contributes significantly to the inflammatory process. The J774A.1 murine macrophage lineage is a well-established in vitro model for studying inflammatory responses and oxidative stress. Photobiomodulation (PBM), using low-level laser therapy, has demonstrated anti-inflammatory and antioxidant effects in various cellular models by modulating mitochondrial function and reducing Reactive Oxygen Species (ROS) production. However, its effects specifically on macrophages under controlled oxidative stress conditions remain underexplored. This study aims to investigate whether PBM can attenuate the inflammatory and oxidative damage induced by Hydrogen Peroxide (H?O?) in J774A.1 macrophages. Cells will be exposed to different concentrations of H?O? (50 ?M, 100 ?M, and 200 ?M) to induce oxidative stress and will be treated or not with PBM using a red laser (660 nm, 50 mW, 3 J/cm², 60 s/well). Cell viability (MTT assay), morphological changes, and the production of inflammatory markers (TNF-?, IL-6, iNOS) and Nitric Oxide (NO) will be analyzed. Previous studies support the use of PBM parameters for biostimulation and its potential to modulate immune responses. We expect that PBM will reduce cell death and suppress the release of pro-inflammatory cytokines and NO in H?O?-stressed macrophages, demonstrating its protective and anti-inflammatory potential. This ongoing study may contribute to understanding the mechanisms of PBM as a non-pharmacological strategy for managing oxidative stress-related inflammatory conditions.
Biography:
Blessing Esiri Oghenekaro is a Process Engineer specializing in Thin Film (CVD/PVD) at Wolfspeed. She holds a Master of Science in Electrical and Computer Engineering from Cornell University and a Bachelor's degree from the University of Benin. At Cornell, she worked as a Research Assistant, designing and fabricating microwave devices in the cleanroom, and served as a Teaching Assistant for microelectronics and Digital VLSI courses. Prior to this, she was a Graduate Engineer at Waltersmith Refinery in Nigeria, where she focused on process optimization, maintenance, and quality assurance. Blessing brings a strong foundation in semiconductor processing and device fabrication.

Abstract:
Silicon Carbide (SiC) has emerged as a leading material in power electronics due to its superior physical and electrical properties compared to conventional Silicon (Si). With a wide bandgap (~3.26 eV for 4H-SiC), high thermal conductivity, and a high critical electric field strength, SiC enables devices that operate at higher temperatures (>200?°C), switch at faster speeds, and withstand higher voltages. These characteristics lead to reduced conduction and switching losses, improved energy efficiency, and smaller, lighter system designs. As a result, SiC devices are increasingly adopted in demanding applications such as electric vehicles (EVs), renewable energy systems, aerospace, and industrial power conversion. The synthesis of high-quality SiC involves both traditional and advanced techniques. While the Acheson process remains foundational for producing bulk material, methods like Physical Vapor Transport (PVT), Chemical Vapor Deposition (CVD), and sublimation are employed to grow high-purity single-crystal SiC. PVT is the standard technique for producing large-diameter 4H-SiC boules, whereas CVD is the method of choice for epitaxial layer growth due to its precise control over doping and thickness—essential for device performance. Fabricating SiC-based Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) requires a sequence of high-precision steps. These include epitaxial layer deposition, ion implantation to form source and drain regions, high-temperature annealing for dopant activation, thermal oxidation for gate oxide formation, and gate electrode deposition. A significant challenge lies in the high interface trap density at the SiC/SiO? interface, which can degrade channel mobility. To mitigate this, post-oxidation annealing in nitric oxide (NO) or alternative nitridation treatments is applied. Advanced lithography, etching, and metallization processes complete the device fabrication. In conclusion, SiC is redefining the landscape of power electronics. While challenges in crystal growth, defect control, and interface engineering remain, ongoing research continues to unlock the full potential of SiC, paving the way for the next generation of efficient, reliable, and compact power devices.
Biography:
Dr. Poliakov served in many avenues of science and technology, including optics of fractals and nanomaterials, fiber optics, displays, AR-VR. He received his Ph.D. in Physics and MSEE in Electro-Optics from NMSU and served as a Post-Doctoral Fellow at University of Rochester, UT Southwestern Medical School, and USARMDEC (as a recipient of US National Research Council grant). He co-authored over 30 papers in peer-review journals and conference proceeding, including a pioneering article on Self-enhanced Raman scattering in fractal nanostructures. He currently holds 14 patents.
Biography:
Dr. Sonia Ruiz is a dietitian-nutritionist and holds a doctorate from Ramon Llull University, specializing in digestive disorders and weight management. She earned her diploma in Dietetics and Human Nutrition at the same university and has completed advanced training in her specialty at national and international institutions. She is the author of three books on nutrition and a prominent science communicator, participating in television programs, radio shows, magazines, and conferences to make nutrition science accessible to the general public. In her professional practice, she combines nutritional education with personalized strategies for digestive disorders, intestinal dysbiosis, intolerances, and obesity, offering both in-person and international virtual consultations. She has developed dietary methods focused on sustainable habits, promoting nutrition based on scientific evidence and tailored to each individual.

Abstract:
Introduction: Giardiasis, caused by Giardia lamblia, is a common intestinal infection that can lead to chronic diarrhea, malabsorption, bloating, and fatigue. Its impact on gut microbiota and the digestive metabolism of fats and proteins remains poorly studied. This study is among the first to correlate microbial profiles with digestive symptoms and specific metabolites (bile acids and SCFAs), providing evidence for personalized therapeutic strategies.
Objectives: To characterize common alterations in the gut microbiota of patients with giardiasis and correlate them with digestive and metabolic symptoms, including chronic diarrhea, steatorrhea, intestinal inflammation, and opportunistic fungal overgrowth.
Methods: Microbiota reports from eight patients were analyzed using NGS at Teletest. Bacillota/Bacteroidota and Firmicutes/Bacteroidetes ratios, bile acids and SCFA levels, proteolytic bacteria (Clostridium spp., Fusobacterium, Desulfovibrio), opportunistic fungi (Fusarium, Neurospora), and inflammation markers (FOB, calprotectin) were assessed. Recurring patterns were identified and correlated with clinical symptoms to establish relationships between microbiota, metabolites, and digestive manifestations.
Results: All patients showed gut dysbiosis, with significant alterations in Bacillota/Bacteroidota and Firmicutes/Bacteroidetes ratios. Secondary bile acids (DCA, LCA) and SCFAs were reduced, associated with steatorrhea in three patients. Five patients showed increased proteolytic bacteria, correlated with bloating, gas, and slow protein digestion. Intestinal inflammation was evident with elevated calprotectin in four patients and positive FOB in three, indicating mucosal damage. Additionally, three patients exhibited opportunistic fungal overgrowth, mainly Fusarium and Neurospora, linked to excessive fermentation and abdominal distension. Severe cases presented combinations of extreme dysbiosis, marked inflammation, and persistent symptoms, including chronic diarrhea, fatigue, and nutrient malabsorption.
Conclusions: Chronic giardiasis significantly alters gut microbiota, impairs fat and protein digestion, promotes inflammation, and favors fungal overgrowth. Patients with more severe alterations experience persistent symptoms and greater dysbiosis. These findings highlight the need for therapies aimed at restoring microbial balance and digestive function, supporting the potential of personalized treatments based on gut ecosystem modulation.