Sunday, January 8, 2017

Phage Patterned Knit Hat

This image shows a cross section of phage infecting an E. coli cell.
 Credit: Lee Simon. Source
My latest #ScienceKnit is this bacteriophage hat. Bacteriophage are viruses that attack bacteria. They generally consist of a head containing the genetic material and a tail where they attach to bacteria and insert their DNA into the cytoplasm of bacteria. Once the DNA is inside the bacterium, it uses the bacterial cell as a factory to replicate and assemble many copies of itself. After new phage have been assembled, the bacterium will break apart and release viruses to the environment. Bacteriophage therapy is a promising alternative to antibiotics as these phage specifically target bacteria and do not adversely affect humans. For more information about bacteriophage and phage therapy, see this Wikipedia article and this documentary about phage therapy.

The pattern for this hat can be found here on Ravelry, here on Craftsy, or purchased directly here

Thanks to Kat Ng for taking the pictures of me (and indulging my whim for a picture in the leaves).

Wednesday, December 7, 2016

Uterus Patterned Knit Hat

I'd like to welcome the newest addition to my #KnitYourPhD line of #ScienceKnits: this amazing uterus patterned knit hat. 

One of the things I love about making PhD-related items is the chance to explain the awesome research of my friends on this blog. This hat was designed for Dr. Erin Reinl, my amazing friend who just earned her PhD at Washington University in St. Louis. During her PhD, Erin studied the uterus. In particular, she investigated the function of an ion channel that was involved in uterine contractions during labor. She found that this ion channel was important for successful labor and her work contributes to a broader understanding of uterine contractibility and dysfunctional labor. Isn't that cool!

To design Erin's hat, I took some inspiration from the cake at her celebration party after she defended her thesis. The "You do You(terus)" theme was awesome and I could not wait to put uteri on a knit hat. This is even better than that time I put sperm on a hat. I may have to start a new line of "ReproductionKnits."

The pattern for the hat can be found here on Ravelry, here on Craftsy, or purchased directly here.

Thanks to Kat Ng for taking the photos of me in the Uterus Hat.

Tuesday, November 1, 2016

Police Box Knit Mittens

Here is my newest installment in the #TardisKnit series (see the others here). I added a top and thumbs to the Police Box Arm Warmers to come up with this design. As written, it will fit small-medium hands (I am wearing them above and I wear a medium glove). 

The pattern can be found here on Ravelry, here on Craftsy, or purchased directly here.

Don't knit but still want to get your hands on these mittens? One pair is currently for sale in my etsy store If that one sells out, feel free to contact me on Etsy for a custom order.

Sunday, September 11, 2016

Bird Patterned Knit Hat

I published the Hawaiian Amakihi fingerless mitts a while back for my ecologist friend Loren who studies these birds. Shortly after making this pattern, I thought, "Wouldn't it be nice to also have this pattern on a matching hat?" Now, over a year after completing the hat (I am so dreadfully behind on this blog...), I am finally ready to publish the pattern!

You can find the pattern here on Ravelry, here on Craftsy, or purchase directly here. Enjoy!

Sunday, May 22, 2016

Bee Patterned Knit Hat

This is my second bee themed hat. Recently I designed a bee bottom hat for a baby. While thinking about that hat, I imagined and sketched an idea for a bee patterned hat featuring entire bees on the hat. This hat was knit using stranded color work for the bees' bodies. I embroidered the wings after the hat was finished.

The pattern can be found here on Ravelry, here on Craftsy, or purchased directly here.

Sunday, March 27, 2016

Bee Bottom Baby Knit Hat

I designed this hat for Teddy, the baby of some of my friends in St. Louis. Isn't he adorable!

Teddy's parents played recreational softball with me and our team mascot was a bee (the Sting). I designed this hat to look like the rear end of a bee, complete with an i-cord stinger. The ribbing design is very forgiving and should fit this guy next winter as well.

The pattern can be found here on Ravelry, here on Craftsy, and purchased directly here.

Teddy photo credit: Teddy's mom Sarah

Sunday, January 10, 2016

Hipster Hat (version 2)

Photo credit: Pablo Tsukayama
This hat is very similar to my warm bulky hipster hat except it is made with worsted weight yarn and smaller needles. It was a very easy knit and is fun to do. Directions are listed below, but click here for a printer-friendly pdf of the pattern.

Hipster Hat Version 2
By Heidi Arjes, © Heidi Arjes, 2016. This pattern is for personal use only. Commercial use without written permission of the author is prohibited.
Gauge: 20 stitches by 16 rows is 4 inches by 4 inches in K1P1 ribbing. Always check your gauge before beginning a pattern, especially as I have a loose knitting style.

Finished dimensions: Finished hat is 18” unstretched (stretches to ~24”) and measures ~10” from the base to the top.

Materials needed:
Size 5 16” circular needles
Size 8 16” circular needles
Size 8 double-pointed needles
Worsted weight yarn (I chose Vanna’s Choice)
Yarn needle

Cast on 88 stitches with size 5 circular needles. Join to knit in the round, being careful not to twist the stitches.
K1P1 ribbing for 12 rows.
Switch to size 8 needles, continuing in the K1P1 ribbing pattern.
Continue knitting until the hat measures ~8 inches from the brim and then begin decreasing.

*K2tog, K6* repeat around (77 stitches remaining).
*K2tog, K5* repeat around (66 stitches remaining).
*K2tog, K4* repeat around (55 stitches remaining).
*K2tog, K3* repeat around (44 stitches remaining).
*K2tog, K2* repeat around (33 stitches remaining).
*K2tog, K1* repeat around (22 stitches remaining).
*K2tog* repeat around (11 stitches remaining).

Cut yarn, leaving an ~8 inch tail. Using yarn needles, pull the tail through the remaining 11 stitches (twice if possible) and pull tight. Secure the yarn ends inside the work.