Unit MATERIALS NANOTECHNOLOGIES
- Course
- Sustainable materials and processes engineering
- Study-unit Code
- A002500
- Curriculum
- In all curricula
- Teacher
- Luca Valentini
- CFU
- 12
- Course Regulation
- Coorte 2023
- Offered
- 2023/24
- Type of study-unit
- Obbligatorio (Required)
- Type of learning activities
- Attività formativa integrata
ADVANCED FUNCTIONAL MATERIALS
| Code | A002502 |
|---|---|
| CFU | 6 |
| Teacher | Luca Valentini |
| Teachers |
|
| Hours |
|
| Learning activities | Caratterizzante |
| Area | Ingegneria dei materiali |
| Academic discipline | ING-IND/22 |
| Type of study-unit | Obbligatorio (Required) |
| Language of instruction | Italian |
| Contents | 1) knowledge of the structures of organic and inorganic molecules most used in the field of nano-devices; 2) knowledge of the main synthesis methodologies for their preparation; 3) knowledge of the structure-property relationships and the techniques for the characterization; 4) understanding the most recent applications and functioning of different devices. |
| Reference texts | Slides posted on the website https://www.unistudium.unipg.it/ |
| Educational objectives | The knowledge of functional materials with their multiple properties (eg mechanical, chemical, physical), for the development of smart engineering structures and infrastructures; develop transversal skills that are able to select, design and integrate new materials into devices that are sustainable in terms of costs of the production process, reduction of energy consumption and portability. Finally, the student will acquire an individual ability in engineering "problem solving". Have the opportunity to attend seminars held by experts from both academic and industrial backgrounds to learn about the issues of greatest interest for effective technology transfer. |
| Prerequisites | In order to understand and know how to apply the topics and techniques described in the course, it is not necessary to have taken other exams of the degree course. However, the knowledge required to understand the contents of the course and achieve the educational objectives are as follows: Mathematical Analysis: derivative and integral know-how. Physics: notions of electromagnetism. Materials Science and Technologies: knowing the basic notions of crystalline structures, mechanical properties of materials and fracture mechanics. Knowledge of these techniques is an indispensable prerequisite for the student who wants to follow the course successfully. |
| Teaching methods | The course is organized as follow: - Lectures on all subjects of the course; - Classroom exercises aimed for a correct application of the concepts developed for the resolution of numerical exercises and problems of practical application. During the course the student is encouraged to work in a quantitative way over all the studied phenomena, using appropriately the involved physical and chemical quantities. This is done through the theoretical frontal lessons and carrying out in the classroom some experimental demonstrations, many numerical exercises and tutorial discussions. |
| Other information | Frontal lessons: five weekly hours with experimental demonstrations and numerical exercises: one or two weekly hours depending on the necessity. The timetable and Classroom can be downloaded at the Web address of the course of study. |
| Learning verification modality | The exam consists of a written test and an oral test. The written test consists of the solution of problems/multiple choice tests and/or 1-2 short compositions. The test has a duration of about 1 hour and 30 minutes and is designed to evaluate tha ability to correctly apply the theoretical knowledge, the understanding of the proposed issues, and the ability to communicate in written form. The oral test consists on interviews of about 20-30 minutes long each one aiming to ascertain the knowledge level and the understanding capability acquired by the student on theoretical and methodological contents as indicated on the program (Nanomaterial classification, transport properties, methods of integration in devices). The oral exam will also test the student communication skill and his autonomy in the organization and exposure of the theoretical topics. The final evaluation will be carried out by the Commission by averaging the results of two tests with the following weights: written test, weight = 4/12; oral test, weight = 2/12. For information on support services for students with disabilities and / or SLD, visit the page http://www.unipg.it/disabilita-e-dsa |
| Extended program | Classification and operating principles of nanomaterials for self-diagnostics: geometry engineering, intrinsically deformable nano composites: elastomer-based nano-composites, classification. Models of electrical conductivity and charge and heat transport phenomena: theory of electrical percolation and principles of rheology; piezoresistivity and correlation with fracture mechanics in electrically conductive polymer nanocomposites. Alignment effects of nano-fibers on electrical conductivity; law of mixture of composites and modeling. Weibull's theory. Principles of operation of resistive and capacitive sensors. Surface nanomechanics: constitutive equations of surface instability. Adhesion and cohesion forces: wettability; self-cleaning surfaces. Metamaterials: operating principles. Interactions of surfaces with electromagnetic waves: optical transparency, absorption and photo-chromicity of surfaces. Conductive polymers and their applications in photovoltaic devices. Processes of integration of nanomaterials in nano-devices: solubility and dispersion; thermodynamics of solutions: solubility parameter, enthalpy and entropy of solutions; chemical and mechanical methods of dispersion; techniques of deposition and characterization of thin films. Shape memory materials. Classification and characteristics. Thermal properties. Functional materials based on natural proteins, thermoplasticity and bio-adhesives. Outline of biomimicry of organic tissues. |
NANOMATERIALS AND NANOTECHNOLOGIES
| Code | A002501 |
|---|---|
| CFU | 6 |
| Teacher | Loredana Latterini |
| Teachers |
|
| Hours |
|
| Learning activities | Caratterizzante |
| Area | Chimica e fisica della materia |
| Academic discipline | CHIM/02 |
| Type of study-unit | Obbligatorio (Required) |
| Language of instruction | Italian |
| Contents | Introduction to Nanotechnology. Chemical-physical properties of solid surfaces. Nanoparticle synthesis methods. General characteristics and synthesis of nanotubes and nanorods. Methods of synthesis of two-dimensional materials (thin films). Structural characterization of nanomaterials using spectroscopy and microscopy techniques. |
| Reference texts | Guozhong Cao & Ying Wang, Nanostructures and Nanomaterials: Synthesis, Properties, and Applications 2nd Edition, World Scientific, 2011. |
| Educational objectives | The main objective of the course is to transmit the following knowledge to the student: - chemical-physical properties of solid surfaces on which the stability of nanomaterials depends; - methods of synthesis of nanomaterials of different dimensionalities; - main methods of structural investigation and chemical-physical characterization of nanostructured systems. The course will allow the student to acquire the following skills: - identify the best synthesis strategy based on the nanomaterial to be prepared; - identify the application potential of nanostructured systems based on their chemical-physical properties. |
| Prerequisites | In order to understand all the topics described in the course, it is necessary to have basic knowledge of mathematics, physics, and chemistry. |
| Teaching methods | The course consists of lectures covering all the topics of the course for a total of 60 hours. |
| Other information | The teacher is available to discuss with the students via email or by scheduling a meeting on the Microsoft Teams platform. |
| Learning verification modality | The exam consists in an oral test lasting about 40 minutes aimed at ascertaining the level of knowledge and understanding achieved by the student on the contents listed in the program. The oral test will also allow to verify the students' communication skills and their language properties. |
| Extended program | • Introduction to Nanotechnology. Basic concepts, classification of nanomaterials and synthesis strategies. • Chemical-physical properties of solid surfaces. Surface energy, surface curvature, and surface charge density. Electric potential near the surface. Electrostatic stabilization and steric stabilization. • Classification of nanoparticle synthesis methods: top-down and bottom-up strategy. Homogeneous nucleation: the concept of supersaturation, thermodynamic and kinetic considerations. Nuclei growth: growth controlled by diffusion or surface processes. Synthesis of nanoparticles: metal nanoparticles; semiconductor nanoparticles (quantum dots); oxide nanoparticles. General considerations and examples of synthesis. Reactions in the vapor phase and phase segregation in the solid state. Heterogeneous nucleation and methods based on the kinetic control of growth in confined environments (e.g. synthesis in micelles and microemulsions). • General characteristics and definition of nanotubes and nanorods. Classification of synthesis methods. Spontaneous growth: thermodynamic considerations. Growth based on the evaporation(dissolution)-condensation process and surface growth theories. Spontaneous growth: synthesis of nanotubes and nanorods based on the VLS (vapor-liquid-solid) or SLS (solid-liquid-solid) process. Stress-induced crystallization. Template-based synthesis: description of the membranes used as templates and synthesis methods (electrochemical deposition and electrophoretic deposition; template filling; electrospinning). Special one-dimensional nanomaterials: fullerenes and carbon nanotubes. General characteristics and methods of synthesis. Classification of synthesis methods of two-dimensional materials (thin films). Vapor deposition and liquid phase growth. Thermodynamic considerations on the nucleation and growth of thin films. Definitions and general concepts of vacuum science. Synthesis methods: physical vapor deposition (PVD), evaporation and sputtering; chemical vapor deposition (CVD); atomic layer deposition (ALD). Growth in liquid phase: self-assembly (SA): general concepts and synthesis examples. Langmuir-Blodgett (LB) films, electrochemical deposition, and films based on the sol-gel process. • Structural characterization of nanomaterials. X-ray diffraction. Electron microscopy: Scanning Electron Microscopy (SEM); Transmission Electron Microscopy (TEM). Scanning Probe Microscopy: Scanning Tunneling Microscopy (STM), Atomic Force Microscopy (AFM), and Scanning Near-field Optical Microscopy (SNOM). Optical spectroscopy: electron spectroscopy (absorption and emission), infrared spectroscopy, Raman spectroscopy. Ion spectrometry: Rutherford backscatter spectroscopy¿ and secondary ion mass spectrometry. |