Week 10 Lab: Introduction to Clean Room and Cleanroom Equipments
Gowning Procedure in Clean Room
Sure! Here are the key points from your presentation on the cleanroom procedures in the
context of electronic systems for cancer diagnosis:
1. **Cleanroom Classification**:
- Class 10000 cleanroom: Defined by the number of particles in the air (e.g., fewer than
10,000 particles of a specific size per cubic foot).
2. **Gowning Procedure**:
- Importance of proper gowning to minimize contamination and protect personnel.
- Steps include wearing a gown, hairnet, face mask, gloves, and protective eyewear.
- Sequence matters: gloves should be put on last to avoid contamination.
3. **Air Curtain**:
- Reduces airborne contaminants when entering the cleanroom.
- Operates by directing a stream of air at the entrance.
4. **Personal Protective Equipment (PPE)**:
- Proper PPE (e.g., gloves, masks, eyewear) protects against particulate contamination and
hazardous substances.
5. **Air Filtration Systems**:
- Types include EPA, HEPA, and ULPA filters, with HEPA filters commonly used in labs.
- Filters help maintain a clean environment by trapping particles.
6. **Positive Pressure Environment**:
- The cleanroom maintains a higher pressure than outside to prevent contaminants from
entering.
- Air pressure modules and HVAC systems support this.
7. **Monitoring and Maintenance**:
- Regular checks on pressure drop to assess filter performance.
- Minimizing particulate matter and optimizing air flow enhance filter efficiency and lifespan.
8. **Research Environment**:
- Emphasis on the importance of a controlled environment for effective research and device
fabrication.
- Future modules will cover fabrication processes, device integration, and sample handling.
,This structured approach ensures a safe and efficient working environment for cancer diagnosis
research.
Introduction to Equipments: Desiccators
Here are the key points from your module on transporting and preserving microfabricated
devices in the context of electronic systems for cancer diagnosis:
1. **Importance of Contamination Control**:
- Contamination (physical, metal, particulate) significantly affects device performance.
- Microfabricated devices, such as chips, are especially vulnerable to environmental exposure.
2. **Characterization Process**:
- After fabrication, devices need to be characterized to validate expected results.
- Proper transportation of devices is critical to prevent contamination before characterization.
3. **Use of Desiccators**:
- A desiccator is used to create a vacuum environment to prevent moisture and air exposure.
- It has a tight seal, a valve for air control, and a connection to a vacuum pump.
4. **Operating a Desiccator**:
- To create a vacuum, the pump removes air from the chamber, preventing oxidation and
contamination of the device.
, - Monitoring the pressure using a dial gauge is crucial during this process.
5. **Placing Wafers in Desiccators**:
- Wafers should be handled using tweezers to avoid contamination from skin oils or particles.
- Once placed in the desiccator, the vacuum is created, ensuring the wafers are preserved in a
contamination-free environment.
6. **Challenges of Vacuum Creation**:
- Initial air removal is rapid, but as the vacuum increases, it becomes harder to remove the
remaining air, requiring more time.
- A well-sealed lid is crucial for maintaining vacuum integrity.
7. **Benefits of Using Desiccators**:
- Preserves the integrity of microfabricated devices by preventing moisture and particulate
contamination.
- Enhances performance yield and reliability, avoiding unintentional artifacts during device
characterization.
8. **Overall Procedure for Device Handling**:
- Follow proper gowning procedures and contamination avoidance practices.
Gowning Procedure in Clean Room
Sure! Here are the key points from your presentation on the cleanroom procedures in the
context of electronic systems for cancer diagnosis:
1. **Cleanroom Classification**:
- Class 10000 cleanroom: Defined by the number of particles in the air (e.g., fewer than
10,000 particles of a specific size per cubic foot).
2. **Gowning Procedure**:
- Importance of proper gowning to minimize contamination and protect personnel.
- Steps include wearing a gown, hairnet, face mask, gloves, and protective eyewear.
- Sequence matters: gloves should be put on last to avoid contamination.
3. **Air Curtain**:
- Reduces airborne contaminants when entering the cleanroom.
- Operates by directing a stream of air at the entrance.
4. **Personal Protective Equipment (PPE)**:
- Proper PPE (e.g., gloves, masks, eyewear) protects against particulate contamination and
hazardous substances.
5. **Air Filtration Systems**:
- Types include EPA, HEPA, and ULPA filters, with HEPA filters commonly used in labs.
- Filters help maintain a clean environment by trapping particles.
6. **Positive Pressure Environment**:
- The cleanroom maintains a higher pressure than outside to prevent contaminants from
entering.
- Air pressure modules and HVAC systems support this.
7. **Monitoring and Maintenance**:
- Regular checks on pressure drop to assess filter performance.
- Minimizing particulate matter and optimizing air flow enhance filter efficiency and lifespan.
8. **Research Environment**:
- Emphasis on the importance of a controlled environment for effective research and device
fabrication.
- Future modules will cover fabrication processes, device integration, and sample handling.
,This structured approach ensures a safe and efficient working environment for cancer diagnosis
research.
Introduction to Equipments: Desiccators
Here are the key points from your module on transporting and preserving microfabricated
devices in the context of electronic systems for cancer diagnosis:
1. **Importance of Contamination Control**:
- Contamination (physical, metal, particulate) significantly affects device performance.
- Microfabricated devices, such as chips, are especially vulnerable to environmental exposure.
2. **Characterization Process**:
- After fabrication, devices need to be characterized to validate expected results.
- Proper transportation of devices is critical to prevent contamination before characterization.
3. **Use of Desiccators**:
- A desiccator is used to create a vacuum environment to prevent moisture and air exposure.
- It has a tight seal, a valve for air control, and a connection to a vacuum pump.
4. **Operating a Desiccator**:
- To create a vacuum, the pump removes air from the chamber, preventing oxidation and
contamination of the device.
, - Monitoring the pressure using a dial gauge is crucial during this process.
5. **Placing Wafers in Desiccators**:
- Wafers should be handled using tweezers to avoid contamination from skin oils or particles.
- Once placed in the desiccator, the vacuum is created, ensuring the wafers are preserved in a
contamination-free environment.
6. **Challenges of Vacuum Creation**:
- Initial air removal is rapid, but as the vacuum increases, it becomes harder to remove the
remaining air, requiring more time.
- A well-sealed lid is crucial for maintaining vacuum integrity.
7. **Benefits of Using Desiccators**:
- Preserves the integrity of microfabricated devices by preventing moisture and particulate
contamination.
- Enhances performance yield and reliability, avoiding unintentional artifacts during device
characterization.
8. **Overall Procedure for Device Handling**:
- Follow proper gowning procedures and contamination avoidance practices.
