Web cookies (also called HTTP cookies, browser cookies, or simply cookies) are small pieces of data that websites store on your device (computer, phone, etc.) through your web browser. They are used to remember information about you and your interactions with the site.
Purpose of Cookies:
Session Management:
Keeping you logged in
Remembering items in a shopping cart
Saving language or theme preferences
Personalization:
Tailoring content or ads based on your previous activity
Tracking & Analytics:
Monitoring browsing behavior for analytics or marketing purposes
Types of Cookies:
Session Cookies:
Temporary; deleted when you close your browser
Used for things like keeping you logged in during a single session
Persistent Cookies:
Stored on your device until they expire or are manually deleted
Used for remembering login credentials, settings, etc.
First-Party Cookies:
Set by the website you're visiting directly
Third-Party Cookies:
Set by other domains (usually advertisers) embedded in the website
Commonly used for tracking across multiple sites
Authentication cookies are a special type of web cookie used to identify and verify a user after they log in to a website or web application.
What They Do:
Once you log in to a site, the server creates an authentication cookie and sends it to your browser. This cookie:
Proves to the website that you're logged in
Prevents you from having to log in again on every page you visit
Can persist across sessions if you select "Remember me"
What's Inside an Authentication Cookie?
Typically, it contains:
A unique session ID (not your actual password)
Optional metadata (e.g., expiration time, security flags)
Analytics cookies are cookies used to collect data about how visitors interact with a website. Their primary purpose is to help website owners understand and improve user experience by analyzing things like:
How users navigate the site
Which pages are most/least visited
How long users stay on each page
What device, browser, or location the user is from
What They Track:
Some examples of data analytics cookies may collect:
Page views and time spent on pages
Click paths (how users move from page to page)
Bounce rate (users who leave without interacting)
User demographics (location, language, device)
Referring websites (how users arrived at the site)
Here’s how you can disable cookies in common browsers:
1. Google Chrome
Open Chrome and click the three vertical dots in the top-right corner.
Go to Settings > Privacy and security > Cookies and other site data.
Choose your preferred option:
Block all cookies (not recommended, can break most websites).
Block third-party cookies (can block ads and tracking cookies).
2. Mozilla Firefox
Open Firefox and click the three horizontal lines in the top-right corner.
Go to Settings > Privacy & Security.
Under the Enhanced Tracking Protection section, choose Strict to block most cookies or Custom to manually choose which cookies to block.
3. Safari
Open Safari and click Safari in the top-left corner of the screen.
Go to Preferences > Privacy.
Check Block all cookies to stop all cookies, or select options to block third-party cookies.
4. Microsoft Edge
Open Edge and click the three horizontal dots in the top-right corner.
Go to Settings > Privacy, search, and services > Cookies and site permissions.
Select your cookie settings from there, including blocking all cookies or blocking third-party cookies.
5. On Mobile (iOS/Android)
For Safari on iOS: Go to Settings > Safari > Privacy & Security > Block All Cookies.
For Chrome on Android: Open the app, tap the three dots, go to Settings > Privacy and security > Cookies.
Be Aware:
Disabling cookies can make your online experience more difficult. Some websites may not load properly, or you may be logged out frequently. Also, certain features may not work as expected.
Congratulations Martin! Martin (Taoran) Hui passed his proposal defense. – June 28, 2017
Chau Vy has passed her qualifying exams! – May 5, 2017
Chinthani Liyanage has joined the group. Welcome! – September 23, 2016
Jennifer Bento has passed her final defense and graduated with her PhD! – September 9, 2016
Congratulations to Reihaneh, who passed her final defense and is now Dr. Mohammadi! – July 19, 2016
Feiyang Chen has joined our group. She came to UCONN as a Chemistry graduate student in the spring semester, and joined the group in May. Welcome! – May 26, 2016
Chau Vy has passed her Polymer Program cumulative exams. Well done! – May 23, 2016
Steve Woltornist successfully defended his dissertation. He is now Dr. Woltornist, and has expressed his desire to be addressed as such. Well done! – December 3, 2015
Elizabeth Brown passed her qualifying exam for entrance into the PhD program. Felicitations! – December 1, 2015
Two new members have joined the group. They are Chau Vy from the Polymer Program, and Shawn Ward from the Chemistry Department. Welcome! – November 27, 2015
Reihaneh Mohammadi won second place in the UConn 3MT competition for her presentation describing her “bottom up” brush growth. In addition to a $500 travel award, she also won a free breakfast for the lab! – October 3, 2015
Steve Woltornist won Best Poster Award from PSME at the Boston ACS meeting for his poster describing his work creating conductive foams from pristine graphene scaffolds. He was one of three winners from over 150 posters. – September 3, 2015
Reihaneh Mohammadi Sejoubsari passed her qualifying exam! – September 2, 2015
Kevin Huang passed his dissertation defense. Congratulations! – August 27, 2015
Steve Woltornist won polymer program 2015 Samuel J. Huang Graduate Student Award! Congrats! – July 11, 2015
Steve Woltornist’s poster at the 2014 Boston MRS Meeting titled “High Strength, Low Density, Conductive Graphene Composites from Emulsion Frameworks” received the second place poster award for the Graphene and Graphene Composites session. – May 13, 2015
Zhenhua has successfully defended his Ph.D. Thesis! Congratulations Dr. Cui! – May 4, 2015
Andre Martinez got his PhD degree! – March 13, 2015
Prof. Adamson Joins TRI Board of Directors. – March 8, 2015
Garrett is featured in IMS news. – March 8, 2015
Our group’s work is featured in C&EN! – February 24, 2015
Congratulations Dr. Martinez for passing your thesis defense! – February 22, 2015
Steve’s paper is published in Macromolecules! – February 13, 2015
Deepthi Varghese and Elizabeth Brown joined our group as PhD students! Welcome! – January 15, 2015
Drona Madugula joined our group as a PhD student! Welcome! – October 25, 2014
Kevin Huang and Harish Kumar passed their prospectus. Congratulations! – October 25, 2014
Steve’s Paper in Carbon “Preparation of Conductive Graphene/Graphite Infused Fabrics Using an Interface Trapping Method” is now on-line. – September 20, 2014
Kevin and Jen’s paper in Microfluidics and Nanofluidics “Robust coaxial capillary microfluidic device for the high throughput formation of polymersomes” is on-line. – August 8, 2014
Reihaneh Mohammadi joined our group as a PhD student. Welcome! – July 17, 2014
Zhenhua’s paper in Small “Large Scale Thermal Exfoliation and Functionalization of Boron Nitride” has been published. – June 10, 2014
Harish passed his cumulative exams. – April 25, 2014
Garrett Kraft passed his oral exam. – March 5, 2014
Steve Woltornist passed his oral exam. – February 19, 2014
Jennifer Bento highlighted in Chemistry department newsletter. – February 11, 2014
Jennifer Bento Selected as National Science Foundation Fellows. – January 14, 2014